Combinatorics (MATH 345) Homepage

Listed below are some useful items for you.
  • Syllabus [pdf]

  • Problem Sets [pdf]

  • Thoughts on homework [pdf]

  • Corrections and Comments for the 5th Edition of Introductory Combinatorics [pdf]

  • Budapest Semesters in Mathematicsa

    We'll miss you, Count von Count.


    Which t-shirt do you want? Combinatorics or Hate?

    For your homework you will need to use LaTeX, a tool for typesetting mathematics. The use of Overleaf has gained widespread popularity - it is a "collaborative, online LaTeX editor that anyone can use." Or you can proceed the old-fashioned way...Have you got a Mac? Get TexShop here. Have you got a PC? MikTeX is here and TexnicCenter is here.

    To give you an idea of exams from previous times I taught the course.
  • Exam 1 - Fall '12 [pdf]
  • Exam 1 - Spring '15 [pdf]
  • Exam 1 - Spring '18 [pdf]
  • Exam 1 - Spring '20 [pdf]
  • Exam 1 - Fall '21 [pdf]

  • Exam 2 - Fall '12 [pdf]
  • Exam 2 - Spring '15 [pdf]
  • Exam 2 - Spring '18 [pdf]
  • Exam 2 - Fall '21 [pdf]


  • Exam 3 - Fall '12 [pdf]
  • Exam 3 - Spring '15 [pdf]
  • Exam 3 - Spring '18 [pdf]

  • Exam 3 - Fall '21 [pdf]


    Our text, Introductory Combinatorics, 5th edition, has an author - here is his website.

    The final exam (i.e. Exam 3) will be given only on the scheduled exam day (December 14, 9am--12noon), please make plans accordingly.
    Some former students of mine have been quite successful with combinatorics and other things. Read about a few:
    Ben Liang ('09)
    Mark Egan ('08)
    Aden Forrow ('13)
    Kyle Gerstenschlager ('15)
    Duncan Levear('15)
    Victor Larsen('09) (Victor is now my academic brother.)
    Rob Nicol ('11)
    Aly Fassett-Carman('15)
    Aden Forrow('13)
    Alex Scibetta('14)
    Daisy Zhuo ('12)
    Why don't these links work? Anna Blasiak ('07)
    Linton Zhou('13)
    Carolynn Johnson('15)
    In the past, a few students in this class have been good at dancing and singing. What is your special talent?
    David Park ('15)