MATH 620, California State University San Marcos

Seminar in advanced Mathematics

Ramsey Theory

Fall 2002

Instructor: André Kündgen
akundgen@csusm.edu
Lecture : TR 17:30-18:45308 Science Hall 2
Office hours: TR 10:00-11:00 339 Science Hall 2
W 16:00-17:00 339 Science Hall 2

Course announcements:
  • The final exam is now graded.
  • Here are the Final exam solutions.
  • The Final exam is due Tuesday, 12/17 by 5PM either in my office or with Carrie.
    • If you find a proof in a book, paper, ... then write up the proof in your own words and then state precisely the source (including author and exact page number.)
    • If in some problem you can't solve part a), then in part b) you may still use part a) and get full credit for b). Of course for a) you would at best get partial credit.
    • #2 a): Erdos-Renyi '60 is useful, but first you must determine what t is. Hints: 0 << t << 1/n and "Second moment method".
    • #3: if you can find an argument which is not probabilistic you will get at least 50% partial credit: often counting arguments can be easily translated into a probabilistic framework (compare Erdos '47 from lectures 3 and 16.)
    • #3: do not pick the edges randomly (that will usually not be bipartite) but somehow pick the partition randomly.
    • #4a): do not attempt to modify the 2-color construction too much, but see instead how you can USE it.
    • #6b): this still has to be a rigorous "proof", but if you understand the question properly, then the proof is short and mainly invokes a result we already proved.
    • Treat this like an open book, open notes, open anything in-class exam.
    • You may come and talk to me about questions.
    • You may not talk to any of your class mates about any aspect of the final. This includes asking "Have you started/finished yet?". In short: if it is not allowed in a regular exam, then it is not allowed here either!
    • You may use any other resource as long as you acknowledge it, by clearly indicating for every problem which reference material you used.
  • Schedule for the 75-minute student presentations:
    • 11/21: Jason Wilson, Constructions using Finite Fields.
    • 11/26: Megan Spangler, Induced Ramsey problems.
    • 12/03: Jessica Jones, Ramsey problems in Number Theory.
    • 12/05: Tina Shinsato, Ramsey problems in Geometry.
    • 12/10: Chuck Buchwald, Ramsey problems for Tournaments and Digraphs.
    • 12/12: Camelia Mihele, More Graph Ramsey Theory.
Course information.
Major topics and theorems.
Homework assignments and policies.
Lecture notes.
MathSciNet search.
The "Small Ramsey Number survey" is Dynamic Survey (DS 1) of the Electronic Journal of Combinatorics.
Exam 1 study guide.

Last updated December 16, 2002.