Sir John Frederick William Herschel, Fellow of St John’s College (1792-1871): ‘Proof of the Chinese theorem that (2n-2)/n is an integer whenever n is a prime, not otherwise’, no date.
200x130mm., mounted on a board measuring 300x225mm. Presented by Herschel’s daughter, Lady Wade, according to an inscription on the mount.
Autograph. Paper mounted on card with a printed inscription.