Srinivasa Ramanujan: The Genius Who Knew Infinity
Date of Birth : 22^{th} December 1887 
Died : 26^{th} April 1920 
Place of Birth : Erode, Tamil Nadu, India 
Father : K. Srinivasa Iyengar 
Mother : Komalatammal 
Spouse/Partner : Janakiammal 
Children : Janaki Ammal, Narayanan 
Professions : Mathematician 
Overview
The world of mathematics has been graced by countless luminaries, but few shine as brightly as Srinivasa Ramanujan, a name that evokes wonder, reverence, and awe. Born on December 22, 1887, in the small town of Erode in the South Indian state of Tamil Nadu, Ramanujan's life was a testament to the infinite potential of the human mind and the enduring allure of mathematical beauty. His story is one of unparalleled genius, profound contributions to the realm of mathematics, and a life cut tragically short. In this comprehensive article by Academic Block, we will embark on a journey to explore the life, work, and enduring legacy of the man who was perhaps one of the greatest mathematical minds of the 20th century.
Early Life and Education of Srinivasa Ramanujan
Srinivasa Ramanujan was born into a modest Tamil Brahmin family to K. Srinivasa Iyengar and Komalatammal. His family's modest means did little to dampen his fascination with numbers and his burgeoning mathematical talent. Early on, it became evident that Ramanujan's relationship with mathematics was unlike that of most children. His innate gift for numbers was not merely a talent but an obsession that would come to define his life.
Ramanujan's formal education began at the local primary school, where his mathematical aptitude soon became apparent. However, he quickly outpaced his curriculum, and his teachers struggled to keep up with his unquenchable thirst for mathematical knowledge. He moved on to the Town High School in Kumbakonam, but this period was not without its hardships.
The importance of formal education in India during the late 19th and early 20th centuries, particularly for a child from a modest background like Ramanujan, cannot be overstated. Success in academics was seen as a gateway to future prospects, but Ramanujan's love for mathematics, while deep, did not easily extend to other subjects. His neglect of other subjects was a cause for concern and put his scholarship at risk.
Recognizing his growing mathematical prowess, a local philanthropist, S. V. Narayana Iyer, and the school's headmaster, Krishnaswami Iyengar, played instrumental roles in supporting Ramanujan's education. They provided him with books on advanced mathematics and were the first to see the potential of this prodigious talent. Ramanujan's dedication and the support he received enabled him to continue his education and eventually secure a scholarship to attend college.
Despite his scholarship, Ramanujan's educational journey was not without its share of difficulties. He continued to struggle with subjects unrelated to mathematics, which eventually led to a strained relationship with his family, who hoped for more wellrounded academic success. Nonetheless, Ramanujan's mathematical prowess continued to evolve, laying the foundation for his future accomplishments.
The Journey to England
The turning point in Ramanujan's life occurred in 1912 when he sent a letter to the renowned English mathematician, G.H. Hardy. The letter, accompanied by a lengthy list of his startling mathematical results and conjectures, arrived on Hardy's desk at the University of Cambridge. What Hardy encountered within those pages was nothing short of extraordinary.
At first, Hardy was skeptical of the letter. The mathematical claims were so advanced and divergent from contemporary mathematics that he suspected it might be a hoax. Yet, the sheer audacity and mathematical sophistication in the letter intrigued him. Hardy discussed the letter with his colleague, J.E. Littlewood, who shared his amazement. They decided to investigate further.
Ramanujan's mathematical results, conjectures, and theories were unique in that they were formulated without the rigorous proof demanded by European mathematical tradition. His theorems often appeared fully formed, as if conjured from some deeper, mystical realm of mathematical insight. This approach, while unconventional, led to a proliferation of mathematical discoveries that significantly impacted number theory, modular forms, and various areas of mathematical analysis.
The collaboration between Ramanujan and Hardy who was known for his rigorous mathematical thinking,, two minds that were at once distinct and complementary, produced a multitude of remarkable results. Together, they embarked on an exploration of the mathematical wonders that Ramanujan had been independently developing.
During this period, Ramanujan wrote multiple notebooks filled with a treasure trove of mathematical theorems, conjectures, and identities. He carried these notebooks with him, always ready to examine the intricate world of numbers. Here are some of his key accomplishments.

The Prime Number Function: Ramanujan formulated a groundbreaking approximation to the number of prime numbers below a given integer. This function, known as the Ramanujan Prime, is still used in prime number theory and has important implications in the distribution of prime numbers.

Mock Theta Functions: Ramanujan introduced a class of functions known as mock theta functions. These functions, with their unique properties, play a crucial role in the study of modular forms and have applications in various areas of mathematics and physics.

Partition Function: Ramanujan made substantial contributions to the theory of partitions. He discovered elegant identities for the partition function, which counts the number of ways a positive integer can be expressed as a sum of positive integers. Some of these discoveries are now known as "Ramanujan's congruences."

Ramanujan Conjectures: He proposed a multitude of conjectures and identities, particularly in the realm of elliptic functions, modular forms, and number theory. Some of these conjectures have taken decades to prove, testifying to the depth of his insights.

Mock Modular Forms: Ramanujan's work on mock modular forms opened up new horizons in the theory of modular forms. These forms have applications in areas as diverse as string theory and quantum field theory.

Infinite Series: Ramanujan was renowned for his remarkable discoveries related to infinite series. His findings, such as the famous RamanujanSato series, have had profound applications in various mathematical disciplines.

The RogersRamanujan Identities: He played a pivotal role in the development of special functions, notably the RogersRamanujan identities. These identities have deep connections with combinatorics and number theory.

Class Invariants: Ramanujan contributed to the development of class invariants and various properties of modular forms. His work added crucial insights to the understanding of complex functions within the framework of number theory.
It's crucial to emphasize that Ramanujan's work, while revolutionary, was often unaccompanied by detailed formal proofs, as he had not been exposed to the contemporary mathematical literature of his time. Things that were too simple for him to be mentioned in the proof, were beyond the comprehension of most of the established mathematicians of the time. Consequently, his findings were met with skepticism and scrutiny. However, over time, all of his conjectures were proven correct, vindicating his exceptional mathematical insights.
Personal and Health Challenges
Ramanujan's time in England was marked not only by mathematical brilliance but also by personal and health challenges. These difficulties added depth to his already compelling life story.
One significant challenge was the cultural and racial bias that Ramanujan faced as an Indian in the heart of the British mathematical establishment. At the time, Western mathematics had a narrow view of what constituted "rigorous" mathematics, and Ramanujan's methods, though brilliant, diverged significantly from the mainstream. His work was difficult to understand by most, thus he faced difficulty in gaining the recognition he deserved.
Furthermore, Ramanujan's dietary restrictions, driven by his devotion to Hinduism, added another layer of complexity to his life. His adherence to a strict vegetarian diet in a culture that had limited understanding of vegetarianism made it challenging for him to find suitable food. This aspect of his life showcased his unwavering commitment to his beliefs.
Perhaps the most poignant of Ramanujan's challenges was his health. He suffered from various health issues, including tuberculosis, a disease that would ultimately claim his life. Despite these ailments, Ramanujan's dedication to mathematics remained unwavering. He continued to work ceaselessly, driven by his passion and the urgency he felt to document his mathematical discoveries.
Ramanujan's Return to India
In 1919, Ramanujan's health had deteriorated significantly, and he made the difficult decision to return to India. He longed for the warmth of his homeland and the familiar surroundings of India. The decision to leave Cambridge and the mathematical community that had embraced him was a poignant one, but it was a decision that his health could not deny.
Back in India, Ramanujan continued to work on mathematics, though his productivity was compromised by his declining health. He began making efforts to compile and organize his mathematical work for posterity, realizing that he might not have much time left.
Tragically, Srinivasa Ramanujan passed away on April 26, 1920, at the young age of 32. His death marked the end of a remarkable journey that had begun in a small Indian town and led to international recognition as one of the most brilliant minds in mathematics.
Despite his untimely passing, Ramanujan's mathematical legacy endures. His notebooks, filled with countless theorems, conjectures, and formulas, are a source of inspiration for mathematicians around the world. Many of his later conjectures, initially met with skepticism, have been proven correct over time, demonstrating the depth of his mathematical intuition.
Ramanujan's Legacy
The legacy of Srinivasa Ramanujan extends far beyond the world of mathematics. It serves as an enduring testament to the boundless potential of the human mind, the unbreakable connection between passion and genius, and the triumph of perseverance over adversity.

A Universal Genius: One of the most remarkable aspects of Ramanujan's legacy is that it transcends cultural and geographic boundaries. He was a selftaught mathematician from a small town in India, who communicated his ideas to some of the brightest minds in Europe. His contributions to mathematics are true testament to the universal language of numbers.

Inspiration to Aspiring Mathematicians: Ramanujan's story serves as an inspiration to aspiring mathematicians worldwide. His journey, from a challenging and unconventional upbringing to international recognition, demonstrates that passion and dedication can overcome even the most significant obstacles.

Profound Impact on Mathematics: Ramanujan's contributions to mathematics are profound and farreaching. His insights into number theory, modular forms, and mathematical analysis have opened up new avenues of research. Theorems bearing his name continue to play a central role in contemporary mathematics.

Validation of Unconventional Approaches: Ramanujan's work showcases the importance of unconventional thinking in the advancement of science. While his methods initially faced skepticism, all his ideas have since been validated, emphasizing the need to embrace new approaches and unconventional perspectives in scientific research.

Recognition and Honors: Ramanujan's legacy has been celebrated in various ways. The Ramanujan Journal, dedicated to research influenced by Ramanujan's work, was established in 1997. In 2011, the Government of India declared December 22, Ramanujan's birthday, as National Mathematics Day to commemorate his contributions.
Ramanujan's life and work continue to captivate the imagination of both mathematicians and the general public. His story has been the subject of numerous books, documentaries, and even a biographical feature film, "The Man Who Knew Infinity" (2015), starring Dev Patel as Ramanujan and Jeremy Irons as G.H. Hardy.
A Legacy Continues
Ramanujan's story, filled with mathematical genius, personal challenges, and cultural dynamics, continues to resonate with people across the world. His life embodies the idea that genius is not confined by societal norms, geographical boundaries, or formal education. It is a testament to the power of passion, perseverance, and the human spirit.
Since his passing, Ramanujan's legacy has been honored in various ways:

The Ramanujan Journal: Established in 1997, the Ramanujan Journal is dedicated to research in the field of mathematics influenced by Ramanujan's work. It serves as a platform for mathematicians to continue exploring the rich mathematical landscape that Ramanujan uncovered.

National Mathematics Day: In 2011, the Government of India declared December 22, Ramanujan's birthday, as National Mathematics Day. This day is celebrated to commemorate Ramanujan's contributions to the world of mathematics and to promote the study and appreciation of mathematics in India.

Awards and Honors: Ramanujan's legacy has also been recognized through awards and honors. The Government of India has issued postage stamps in his honor, and various institutions, including the Indian government, have established scholarships, fellowships, and prizes in his name.

The Legacy of "The Man Who Knew Infinity": The 2015 biographical film "The Man Who Knew Infinity," based on the book of the same name by Robert Kanigel, brought Ramanujan's life and work to a broader audience. The film, starring Dev Patel as Ramanujan and Jeremy Irons as G.H. Hardy, shed light on the man behind the mathematics.
Ramanujan's mathematical legacy is not static; it continues to evolve as contemporary mathematicians unearth new connections and applications of his work. His theorems and conjectures remain sources of inspiration for those who follow in his footsteps.
Final Words
The story of Srinivasa Ramanujan is one of passion, perseverance, and unmatched mathematical genius. Born into a modest family in India, he overcame societal, cultural, and health challenges to become one of the greatest mathematicians of the 20th century. His unique approach to mathematics, marked by the absence of formal proofs and the presence of pure intuition, yielded a wealth of groundbreaking results that continue to influence and shape the world of mathematics.
Ramanujan's collaboration with G.H. Hardy in England, though not without its challenges, was a turning point in his career. The partnership between the selftaught Indian prodigy and the rigorous British mathematician led to the development of numerous theorems and conjectures that have left an indelible mark on various branches of mathematics.
While Ramanujan's life was tragically cut short at the age of 32, his mathematical legacy endures. His contributions to number theory, modular forms, and mathematical analysis continue to inspire and guide mathematicians worldwide. Moreover, his life story, one of triumph over adversity and the unwavering pursuit of one's passion, serves as an enduring source of inspiration for individuals in all fields of endeavor. Please provide your comments below, it will help us in improving this article. Thanks for Reading!
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The correct spelling is Srinivasa Ramanujan. Srinivasa Ramanujan (1887–1920) was a renowned Indian mathematician known for his substantial contributions to number theory, continued fractions, and infinite series. His work, largely selftaught, has had a profound impact on mathematics. The convention is to list his given name first, followed by his surname, making "Srinivasa Ramanujan" the proper format.
Srinivasa Ramanujan was an Indian mathematician renowned for his extraordinary contributions to number theory, mathematical analysis, and infinite series. His discoveries include groundbreaking results in areas like modular forms, partitions, and continued fractions, profoundly influencing mathematical research and inspiring generations of mathematicians worldwide.
Ramanujan's famous identity, involving the infinite series is significant for its astonishing accuracy and rapid convergence. It exemplifies his intuitive genius in manipulating infinite series and showcases his ability to derive elegant and profound mathematical identities.
Ramanujan's key theorems include results in partition theory, such as the asymptotic formula for the partition function, and discoveries related to mock theta functions. He also formulated formulas for calculating π, infinite series expansions, and identities involving continued fractions, which have applications in number theory, modular forms, and mathematical physics.
Ramanujan's discoveries often came from deep intuition and a remarkable ability to perceive mathematical patterns. He independently derived formulas through intensive experimentation and introspection, without formal training, reflecting his innate mathematical genius and cultural upbringing that fostered a unique perspective on numbers and functions.
The Ramanujan conjecture concerns properties of the partition function and estimates how partitions of integers are distributed. It's crucial in understanding the deep connections between modular forms, number theory, and mathematical physics, influencing research in analytic number theory and the theory of automorphic forms.
Ramanujan's work profoundly impacted modern mathematics by opening new avenues in number theory, modular forms, and infinite series. His discoveries led to developments in areas like partition theory, mock theta functions, and the theory of elliptic functions, influencing fields ranging from mathematical analysis to mathematical physics and computer science.
Ramanujan's collaboration with G.H. Hardy began when Hardy recognized the extraordinary talent in Ramanujan's unsolicited letters containing mathematical discoveries. Their partnership led to fruitful years of collaboration at Cambridge University, where Hardy mentored Ramanujan and helped him publish his work, establishing Ramanujan as a mathematical prodigy.
Ramanujan's unconventional methods included intuitive leaps, intricate series manipulations, and remarkable conjectures that he often derived without formal proofs. His intuitive understanding of numbers and functions allowed him to propose conjectures that were later proven correct, showcasing his unique approach to mathematical discovery.
Ramanujan's upbringing in a traditional South Indian Brahmin family immersed him in cultural and religious contexts rich in mathematical symbolism and rituals. This environment nurtured his intuitive grasp of numbers and patterns, contributing to his ability to independently discover profound mathematical identities and series.
Ramanujan's Lost Notebook contains unpublished results and conjectures found after his death, revealing new insights into his mathematical genius. Its discovery in 1976 expanded our understanding of his work, providing mathematicians with previously unknown formulas and identities that continue to inspire research in number theory and mathematical physics.
Ramanujan's work continues to inspire research in areas like modular forms, partitions, and special functions. Applications include cryptography, where his mock theta functions play a role, and theoretical physics, where his formulas contribute to the study of black holes and string theory, highlighting the enduring relevance of his mathematical legacy.
Ramanujan faced challenges including health issues, financial difficulties, and cultural adjustment during his time in England. Initially unrecognized in India, he struggled to gain acceptance for his mathematical insights. Despite these challenges, his collaboration with Hardy and recognition by the mathematical community in England marked a turning point in his career.
Notable unsolved Ramanujan conjectures include statements about partitions, mock theta functions, and continued fractions. These conjectures challenge mathematicians to find proofs and deeper insights into the patterns and structures he observed, reflecting his ability to propose conjectures based on intuitive understanding and numerical evidence.
Ramanujan's contributions enriched mathematical analysis with new techniques in infinite series, special functions, and number theory. His formulas and identities introduced novel approaches to solving mathematical problems, influencing fields like analytic number theory, modular forms, and the theory of partitions, expanding the toolkit for mathematicians tackling complex problems.
Ramanujan was born in 1887 in Erode, Tamil Nadu, India, showing exceptional mathematical talent from a young age. Despite lacking formal training, he independently developed complex theories and formulas, sending his work to mathematicians like G.H. Hardy. His recognition in England led to a productive collaboration with Hardy and marked the beginning of his influential career in mathematics.
Famous quotes by Srinivasa Ramanujan
“An equation means nothing to me unless it expresses a thought of God.”
“The essence of mathematics is not to make simple things complicated, but to make complicated things simple.”
“Do not worry about your difficulties in mathematics; I can assure you that mine are still greater.”
“If it is assumed that there is an instinct for the truth, or beauty, or whatever you like to call it, then it is clear that the instinct is not accompanied by any voice telling you what you ought to do. It must be the product of a creative imagination.”
“The function of the mathematician is to do something, to prove new theorems, to add to mathematics, and not to talk about what he or other mathematicians have done.”
“I have discovered these results only through the grace of the Lord. I have not studied.”
“An identity, if it can be established, explains the whole universe.”
“The limits of my language mean the limits of my world.”
“The man who is certain of both the vision and the vision’s truth seems to be the genius; the man who is sure of the vision without being sure of the truth is the enthusiast; the man who is sure of the truth without being sure of the vision is the pedant.”
“A mathematician can predict the future, to some extent; it is his Godgiven gift.”
“The beauty of pure mathematics lies in the sweet simplicity of its theorems, the mysterious depth of its ideas, the hidden connections that link them together.”
Srinivasa Ramanujan’s lesser known contributions
Göllnitz–Gordon Identities: Ramanujan made significant contributions to the study of qseries, a special class of mathematical series that have applications in various areas of mathematics. He discovered several remarkable identities in this field. One of his lesserknown contributions is the Göllnitz–Gordon identities, which are a set of combinatorial identities that relate different qseries. These identities have applications in combinatorics and number theory.
Generalized Elliptic Integrals: Ramanujan’s work in the theory of elliptic functions extended beyond the wellknown modular forms. He discovered a number of formulas for generalized elliptic integrals, which are complex mathematical functions used in the study of elliptic curves and other areas of mathematics. These formulas have found applications in diverse branches of mathematics and physics.
Divergent Series and Analytic Continuation: Ramanujan was known for his ability to assign meaningful values to divergent series, which are series that do not converge in the traditional sense. His work in this area challenged conventional mathematical thinking and contributed to the development of analytic continuation techniques. Ramanujan’s insights into the regularization of divergent series have applications in quantum field theory and other areas of theoretical physics.
Ramanujan’s Continued Fractions: Ramanujan had a deep appreciation for continued fractions, a representation of numbers as an infinite sequence of fractions. He derived many interesting and unusual continued fraction representations for mathematical constants, including π (pi) and e (Euler’s number). Some of these representations are not as wellknown as his other results but are of significant mathematical interest.
Theory of Ramanujan Primes: Ramanujan’s fascination with prime numbers led him to make numerous discoveries related to primes. Apart from the famous Ramanujan Prime, he also developed the theory of Ramanujan primes, which are a class of primes with certain properties related to modular forms. This work continues to be explored by mathematicians.
Srinivasa Ramanujan’s family life
Early Family Life: Ramanujan was born into a traditional South Indian Brahmin family. His father, K. Srinivasa Iyengar, worked as a clerk in a fabric store, and his mother, Komalatammal, was a housewife. The family was not particularly welloff, which posed some financial challenges for Ramanujan during his education.
Marriage: Ramanujan’s marriage to Janaki Ammal was arranged, and he married her in 1909. His wife, Srimathi Janaki Ammal, was a supportive presence throughout his life, and she played a crucial role in his overall wellbeing. Janaki Ammal remained in India when Ramanujan traveled to England, but she was an essential part of his emotional support network. They did not have any children.
Facts on Srinivasa Ramanujan
SelfTaught Mathematical Prodigy: Ramanujan was almost entirely selftaught in mathematics. His early education was rudimentary, and he developed his mathematical prowess independently through books and his own explorations.
Mathematical Genius at an Early Age: Ramanujan’s mathematical genius began to shine in his teenage years. By the age of 14, he had mastered advanced trigonometry and developed his own theorems.
The Infamous HardyRamanujan Number: One of his famous claims was that the number 1729 is the smallest number expressible as the sum of two cubes in two different ways (i.e., 1729 = 1^3 + 12^3 and 9^3 + 10^3). This number is now known as the “HardyRamanujan number.”
Letters to G.H. Hardy: In 1912, Ramanujan wrote a letter to the eminent British mathematician G.H. Hardy, containing numerous unsolved mathematical theorems. This letter, which began their famous collaboration, is considered one of the most significant correspondences in the history of mathematics.
Euler’s Number, π, and √(1): Ramanujan made substantial contributions to number theory, including formulas that relate Euler’s number (e), the mathematical constant π (pi), and the imaginary unit √(1) in fascinating and unexpected ways.
Ramanujan Prime: Ramanujan developed an approximation to the number of prime numbers below a given integer, which is known as the “Ramanujan Prime.” This approximation remains widely used in number theory.
Prolific Mathematical Work: Ramanujan produced over 3,900 results during his short lifetime. Many of these results are complex and continue to be explored and validated by contemporary mathematicians.
The Lost Notebook: After Ramanujan’s death, a “lost notebook” was discovered among his papers. This notebook contained many of his unpublished results, which continue to inspire mathematical research.
Elected Fellow of the Royal Society: Ramanujan was elected as a Fellow of the Royal Society in 1918, one of the highest honors in the scientific community.
Return to India: In 1919, due to deteriorating health, Ramanujan returned to India after his time in England. He continued to work on mathematics and was appointed as a Fellow of the University of Madras.
National Mathematics Day: In recognition of Ramanujan’s contributions to mathematics, the Government of India declared his birthday, December 22, as National Mathematics Day in 2011.
A Film on His Life: Ramanujan’s life and collaboration with G.H. Hardy were portrayed in the biographical film “The Man Who Knew Infinity,” released in 2015.
Ramanujan’s Lost Letter: In 2020, a previously unknown letter from Ramanujan to a British missionary was discovered. This letter sheds light on Ramanujan’s life and work in India, offering new insights into his mathematical journey.
Ramanujan Prize: To honor his legacy, the International Centre for Theoretical Physics (ICTP) awards the Ramanujan Prize for young mathematicians from developing countries who have conducted outstanding research.
Academic References on Srinivasa Ramanujan
“Ramanujan: Twelve Lectures on Subjects Suggested by His Life and Work” by G. H. Hardy: This book, written by one of Ramanujan’s most prominent collaborators, G.H. Hardy, provides insights into Ramanujan’s life, work, and the mathematics he contributed.
“The Man Who Knew Infinity: A Life of the Genius Ramanujan” by Robert Kanigel: This biography of Ramanujan is widely regarded as a comprehensive and detailed account of his life, providing historical context and insights into his mathematical contributions.
“Srinivasa Ramanujan: Essays and Surveys” edited by Bruce C. Berndt: This book is a collection of essays and surveys written by various mathematicians and scholars. It covers a wide range of topics related to Ramanujan’s work and its impact on mathematics.
“Ramanujan: The Man and the Mathematician” by K. Srinivasa Rao: This book provides a biographical account of Ramanujan’s life and includes discussions of his mathematical contributions.