**G H Hardy**'s lectures in the United States was compiled by D G Rogers. The notes are also by D G Rogers.

**Princeton University, first semester, 1928-29**

*Chapters in the theory of functions*

**New York City, AMS meeting, 28 December, 1928**

6th Josiah Willard Gibbs Lecture

*An introduction to number theory*

Delivered in absence due to ill health by H W Brinkmann, Harvard

Published in Bulletin of AMS, 35 (1929), 778-818

Awarded Chauvenet Prize by MAA

**Lehigh University, 11 January, 1929**

*Hilbert's mathematical logic*

**Ohio State University, 18 January, 1929**

*The theory of primes*

**University of Chicago, 21 January, 1929**

*The analytic theory of numbers*

**California Institute of Technology, 27 January-15 March, 1929**

*Lectures on the analytic theory of numbers*

**University of California at Los Angeles, 1 and 5 March, 1929**

Titles?

**University of California at Berkeley, 7-12 March, 1929**

Hitchcock Lectures (subject?)

**University of Iowa, 23 March, 1929**

*Hilbert's logic*

**New York City, meeting of AMS, 29 March, 1929**

*Modern work in the theory of ordinary trigonometric series*

**Columbia University, 17-18 April, 1929**

*Prime numbers*

**Harvard Tercentenary Conference of Arts and Sciences
31 August, 1936 (before AMS and MAA)**

*The Indian mathematician, Ramanujan*

**3 September, 1936**

*The mathematical work of Ramanujan*

**University of Cincinnati, November, 1936**

Spoke in symposium

**Harvard Mathematical Colloquium, 3 December, 1936**

*Some of Ramanujan's work in number theory*

Constantin Carathéodory (1928); and Hermann Weyl (1929).

Carathéodory was visiting Harvard from Munich for the first part of

1928.

**University of Pennsylvania, 10-13 January, 1928**

Ohio State University, 16-17 January, 1928

University of Iowa, 19-20 January, 1928

University of Chicago, 23-24 January, 1928

University of Michigan, 25-27 January, 1928

Adelbert College, 30-31 January, 1928

Cornell University, 1-2 February, 1928

**
Harvard University, until c. 1 June, 1928
Wiiliam Lowell Putnam Lecture, 21 March, 1928**

*Selected problems of the caluculus of variations*

**University of California at Berkeley, Summer Session, 1928**

With G C Evans and H B Phillips; but not otherwise listed (the next year, Weyl was one of four lecturers at UCB, with three at UCLA; all listed in advance)

**University of Iowa, December, 1928
**

**
University of Michigan, December, 1928
**

**
Columbia University, March, 1929
**

**
New York City, AMS Meeting, 30 March, 1929**

*Fourier series and almost periodic functions from the standpoint of groups*

**Harvard University, 29 April -3 May, 1929
**

**
University of Chicago, 7 May, 1929
**

**
University of Illinois, 8-10 May, 1929
**

**
Rice Institute, 20-22, May, 1929
**

**
California Institute of Technology, 31 May-3 June, 1929
**

**
Stanford University, 7-10 June, 1929
**

**
University of California at Berkeley
Summer Session, 1 July-10 August, 1929**

*Representations of groups, applications and representations of groups for quantum mechanics*

[It is sometimes remarked that mathematics on the West Coast of the USA got off to a somewhat slow and undistinguished start, but it is interesting to note that Carathéodory, Hardy, and Weyl all made the pilgrimage to California.]

Also touring in the USA in 1929 were P A M Dirac, from Cambridge, and E A Milne, from Oxford. Veblen was to try to get Dirac to Princeton for a period similar to Hardy's visit, but with substantial remuneration from Princeton, in contrast to the funds Veblen secured from the International Education Board for his exchange with Hardy; but Dirac was unable to come until the academic year 1930-31.

Dirac lectured on quantum mechanics at the University of Wisconsin in April and May, 1929. He and Milne were two of the four lecturers giving courses at a symposium on theoretical physics at the University of Michigan, 24 June-16 August, 1929: Milne spoke on problems in astrophysics and vector and tensor methods in statics and dynamics; Dirac gave an introduction to quantum mechanics.