# Author:Srinivasa Ramanujan

โAuthor Index: Ra | Srinivasa Ramanujan (1887โ1920) |

Indian mathematician and one of the mathematical geniuses of the twentieth century |

## WorksEdit

- Algebraic relations between certain infinite products (1919) (transcription project)
- Congruence properties of partitions (1919, published in 1921)
- On the expression of a number in the form ๐๐ฅยฒ+๐๐ฆยฒ+๐๐งยฒ+๐๐ขยฒ (1920)
- Squaring the circle (1913)

*Some* or all works by this author are in the **public domain** in the **United States** because they were published before January 1, 1924.

The author died in 1920, so works by this author are also in the **public domain** in countries and areas where the copyright term is the author's **life plus 80 years or less**. Works by this author may also be in the **public domain** in countries and areas with longer native copyright terms that apply the **rule of the shorter term** to foreign works.

Some or all works by this author are in the **public domain in India** because it originates from India and its term of copyright has expired. According to The Indian Copyright Act, 1957, all documents enter the public domain after sixty years counted from the beginning of the following calendar year (ie. as of 2019, prior to 1 January 1959) after the death of the author.

Some or all works by this author are also in the public domain **in the U.S.A.** because it was in the public domain in India in 1996, and no copyright was registered in the U.S.A. (This is the combined effect of India's joining the Berne Convention in 1928, and of 17 USC 104A with its critical date of January 1, 1996.)