Manuscript Archive

The Notebooks of Srinivasa Ramanujan

Thousands of formulas, identities and conjectures recorded with astonishing intuition.

Ramanujan notebook image

The Three Notebooks

The notebooks contain a vast collection of identities, formulas and results, many recorded without proofs. This site treats them as a preserved mathematical archive rather than a fully transcribed edition.

The Lost Notebook

The Lost Notebook is connected with Ramanujan's final period and later rediscovery. It is especially important for mock theta functions, q-series and continuing research.

What the Notebooks Contain

Infinite series, infinite products, continued fractions, theta functions, modular equations, q-series, gamma-function identities, definite integrals, partition identities, mock theta functions, approximations and asymptotic expansions all appear in this archive's subject map.