Copy of Srinivasa Ramanujan's notebook 2: chapters XXI [continued] and miscellaneous papers Ramanujan, Srinivasa (1887-1920), mathematician The fourth notebook of four into which Ramanujan's Notebook 2 was copied by an unidentified person, catalogued as Add.Ms.b.101-104. Chapter XXI is continued from Add.Ms.b.103. Contents: ff 1-5 Chapter XXI (cont'd); ff 6-12 Calculations 'Copied from the Loose Papers': miscellaneous (ff 6-12), proof for Bertrand's Postulate (ff 13-16), reciprocal functions (ff 16-25), approximate summations of series involving prime numbers (ff 25-44), 'Middle of a paper?' on moduli (ff 45-55), 'The Three Quarterly Reports f the late S. Ramanujan, to the Board of Studies in Mathematics, when he was a Research Scholarship-holder', 5 August and 7 November 1913 and 9 March 1914 (ff 64-118). [20th cent.] 1 vol. https://archives.trin.cam.ac.uk/copy-of-s-ramanujans-notebook-2-4 104