Calendar: 1971-1972 Page 450

Annual Report of the Delegacy lxxv DEPARTMENT OF MATHEMATICS Number of Students Sc Special 68 Sc Broad based '48 Sc Ancillary 61 Sc Engineering 198 Postgraduate 41 Departmental Notes Professor Bondi gave the Annual Woolwich Polytechnic Lecture 'Europe in space' at the Woolwich Polytechnic and lecture on 'Astronomy of the future' to the Royal Astronomical Society in London Professor Frohlich gave lectures on 'Forms over group rings' 'K-theory of quadratic forms over rings of algebraic integers' and 'Equivariant Brauer groups' to the Algebra Colloquium University of London the Number Theory Seminar University of Cambridge the Mathematics Colloquia in the Universities of Warwick of Leiden Holland and of Utrecht Holland to the colloquium on Number Theory at the University of Bordeaux to the conference on K-theory at the University of Montpellier France and to the conference on Ring Theory at Oberwolfach Germany He also gave talks on 'The quadratic reciprocity law and since' to the Archimedeans Cambridge and on 'Sums of squares' to the sixth form at St Paul's School Professor Higgins gave talk to the colloquium at Nottingham University on 'The Birkhoff-Whitt theorem' Professor Pirani lectured at the Universities of Warsaw and Torun at the invitation of the Polish Physical Society at the Zentral- institut fur Astrophysik Potsdam by invitation of the Deutsche Akademie der Wissenschaften and delivered Schuster colloquium at the University of Manchester on General Relativity Dr Armitage delivered lectures to the Bordeaux Conference on Number Theory and to the Number Theory Seminar in Oxford Dr Crampin gave lecture on 'Neo-classical Mechanics' at the Universite Libre de Bruxelles Dr Lue lectured to the Mathematics Seminars of the Free Univer- sity Berlin and the University of Wales Aberystwyth Dr Silvester lectured to the Algebra Colloquium at Queen Mary College and at Nottingham University Dr Tyrrell gave lectures on 'Clifford parallelism' Ά sequence