Three Notebooks

The Three Notebooks

A manuscript archive of formulas, identities and conjectures recorded with astonishing compression.

Ramanujan's three notebooks contain a vast body of results, many written without the formal proofs expected in printed papers. They remain a central source for studying his mathematical imagination.

Three notebooks

Recorded Results and Proofs

The notebooks preserve results in a compact form. This site distinguishes a recorded result from a proof and does not claim exact notebook attribution unless the supplied source confirms it.

Mathematical Scope

The notebooks range across infinite series, infinite products, continued fractions, modular equations, gamma-function identities, definite integrals, partition identities and asymptotic expansions.

Later Editing and Study

Editors and mathematicians after Ramanujan worked to verify, annotate and place many notebook entries into the language of modern mathematics.

Source and Edition Information

Notebook attribution not confirmed in the supplied source. Exact edition-level page references are not asserted here.

Searchable Subject Index

Notebook attribution not confirmed in the supplied source.