Abstracts of lectures on Combinatorial Counting

Back to course homepage.

11.3. 2001

Motivating examples, I

Combinatorial counting,
the permanent and the determinant,
graph polynomials,
generating functions of graph properties.

18.3. 2001

Models of Computation, I

The class #P (Turing machines),
The (non-uniform) classes VP and VNP over fields F (Algebraic circuits)
Register machines over a field or a ring (Blum-Shub-Smale computing)

25.3. 2001

Complete problems for #P

The hamiltonian and the permanent
Counting solutions of 3COL and 3SAT

1.4. 2001

Complete problems for VNP

PESACH

15.4. 2001

The Tutte polynomial, I

Basic properties
Special instances

22.4. 2001

The Tutte polynomial, II

Tutte-Grothedieck invariants of graphs
Colored Tutte polynomials
Rank generating polynomials

29.4. 2001

The Tutte polynomial, III

Complexity of graph polynomials
The Tutte polynomial is almost always hard to evaluate

6.5. 2001

An excursion into knot theory

Basic knot theory
Combinatorial knot invariants
Jones polynomial and Kauffman brackets

13.5. 2001

Graphs of bounded tree width

Basic on tree width
Dynamic programming on graphs of bounded tree width
Combinatorial counting on graphs of bounded tree width

20.5. 2001

Splitting formulas for graph polynomials

Shavuoth

3.6. 2001

More on the permanent, I

10.6. 2001

More on the permanent, II

17.6. 2001

Approximation algorithms: Tutte polynomial

24.6. 2001

Approximation algorithms: Permanent