208 / FIELDS OF INSTRUCTION in all doctoral programs, the latter for three quarters. Descriptions of the 500-level courses are to be found in the undergraduate catalog. Each doctoral candidate is required to take two advanced-level courses for which at least one of the basic advanced courses is a prerequisite. Doctoral candidates must pass reading knowledge examinations in two of the following foreign languages: French, German, or Russian. Advanced mathematics courses are not necessarily numbered according to their difficulty. The 700 courses are those related more specifically to some particular field. Much of the advanced graduate training is done in MS 690. In recent years eight or more sections of 690 have been offered each quarter. Every graduate student is expected to attend the regular colloquium. Details concerning all requirements for graduate degrees in mathematics can be obtained by writing to the Mathematics Department Graduate Selection Committee. COURSES FOR ADVANCED UNDERGRADUATES AND GRADUATES MS 501--INTERMEDIATE DIFFERENTIAL EQUATIONS FOR ENGINEERS AND PHYSICAL SCIENTISTS. 3 credits MS 502-VECTOR ANALYSIS. 3 credits MS 503-INTRODUCTION TO COMPLEX VARIABLES FOR ENGINEERS AND PHYSICAL SCIENTISTS 1. 3 credits MS 504--INTRODUCTION TO COMPLEX VARIABLES FOR ENGINEERS AND PHYSICAL SCIENTISTS 2. 3 credits MS 505-INTRODUCTION TO PARTIAL DIFFERENTIAL EQUATIONS. 3 credits MS 507-FOURIER SERIES AND TRANSFORMS 1. 4 credits MS 508-FOURIER SERIES AND TRANSFORMS 2. 4 credits MS 509-INTRODUCTION TO FUNCTIONAL ANALYSIS 1. 4 credits MS 510-INTRODUCTION TO FUNCTIONAL ANALYSIS 2. 4 credits MS 531-INTRODUCTORY ALGEBRA 1. 3 credits MS 532-INTRODUCTORY ALGEBRA 2. 3 credits MS 533-INTRODUCTORY ALGEBRA 3. 3 credits MS 535-COMPUTABILITY AND UNSOLVABILITY. 5 credits MS 541-MODERN ANALYSIS 1. 3 credits MS 542-MODERN ANALYSIS 2. 3 credits MS 543-MODERN ANALYSIS 3. 3 credits MS 544-THEORY OF DIFFERENTIAL EQUATIONS 1. 3 credits MS 545-THEORY OF DIFFERENTIAL EQUATIONS 2. 3 credits MS 547-ADVANCED CALCULUS 1. 3 credits MS 548-ADVANCED CALCULUS 2. 3 credits MS 549-ADVANCED CALCULUS 3. 3 credits MS 551-PROSEMINAR 1. 4 credits MS 552-PROSEMINAR 2. 4 credits MS 553-PROSEMINAR 3. 4 credits MS 555-INTRODUCTION TO ANALYTIC FUNCTIONS 1. 3 credits MS 556-INTRODUCTION TO ANALYTIC FUNCTIONS 2. 3 credits MS 561-INTRODUCTION TO TOPOLOGY 1. 3 credits MS 562-INTRODUCTION TO TOPOLOGY 2. 3 credits