# Mathematician:Emma Markovna Lehmer

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## Mathematician

Russian-born mathematician active mainly in the field of number theory.

The wife of Derrick Henry ("Dick") Lehmer, with whom she was a frequent collaborator.

Also an accomplished pianist.

## Nationality

Russian-born, later American

## History

- Born: November 6, 1906, Samara, Russian Empire (between 1935 and 1991 known as Kuybyshev)
- Died: May 7, 2007, Berkeley, California, USA

## Theorems and Definitions

- There isn't, but there really ought to be, an
**Emma Lehmer Lemma**.

## Publications

- 1930:
*A Numerical Function Applied to Cyclotomy*(PhD thesis) - 1935:
*On a resultant connected with Fermat's Last Theorem* - 1939:
*Topological Groups*(by Pontryagin: translation from Russian into English) - 1941:
*On the first case of Fermat's Last Theorem*(with Dick Lehmer) - 1971:
*On the Quadratic Character of Some Quadratic Surds* - 1978:
*Rational reciprocity laws*

## Also known as

Her name at birth was **Emma Markovna Trotskaia**.