Mathematician:Srinivasa Aiyangar Ramanujan

Mathematician

Indian mathematician who made substantial contributions to mathematical analysis, number theory, infinite series and continued fractions.

Nationality

Indian (Tamil)

History

• Born: 22 Dec 1887, Erode, Tamil Nadu state, India
• Died: 26 April 1920, Kumbakonam, Tamil Nadu state, India

Theorems and Definitions

• Ramanujan's Arctangent Sum
• Ramanujan's Congruences
• Ramanujan's Infinite Nested Roots

• Ramanujan-Peterssen Conjecture (with Hans Peterssen)
• Ramanujan-Skolem's Theorem (with Thoralf Albert Skolem)

• Dougall-Ramanujan Identity (with John Dougall)
• Rogers-Ramanujan Identities (independently of Leonard James Rogers)
• Rogers-Ramanujan Continued Fraction (independently of Leonard James Rogers)

• Ramanujan's Constant
• Ramanujan Graph
• Ramanujan Phi Function
• Ramanujan Prime
• Ramanujan Sum
• Ramanujan Summation
• Ramanujan's Tau Function
• Ramanujan Theta Function

• Ramanujan-Nagell Equation (with Trygve Nagell)
• Ramanujan-Nagell Number (with Trygve Nagell)
• Ramanujan-Soldner Constant (with Johann Georg von Soldner)
• Hardy-Ramanujan Number (with Godfrey Harold Hardy)
• Landau-Ramanujan Constant (independently of Edmund Georg Hermann Landau)

Results named for Srinivasa Aiyangar Ramanujan can be found here.

Definitions of concepts named for Srinivasa Aiyangar Ramanujan can be found here.

Publications

• 1927: Collected Papers of Srinivasa Ramanujan

Also known as

The name can also be rendered Srīnivāsa Aiyangār Rāmānujan.

In Tamil: சீனிவாச இராமானுஜன் or ஸ்ரீனிவாஸ ஐயங்கார் ராமானுஜன்.

Also rendered as Srinivasa Iyengar Ramanujan.

Some sources give him as Srinivasa Ramanujan Aiyangar.

Some render the middle name as Aaiyangar.

His name is also seen rendered as Ramanujam: the final letter of such names is ambiguous in Tamil.

Sources

• John J. O'Connor and Edmund F. Robertson: "Srinivasa Aiyangar Ramanujan": MacTutor History of Mathematics archive

• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): A List of Mathematicians in Chronological Sequence
• 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): Ramanujan, Srinivasa (1887-1920)
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): A List of Mathematicians in Chronological Sequence
• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): Ramanujan, Srinivasa Aaiyangar (1887-1920)
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Ramanujan, Srinivasa Aaiyangar (1887-1920)
• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): Ramanujan, Srinivasa (1887-1920)