Combinatorics

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[edit] Preliminaries

[edit] The Pigeonhole Principle

[edit] Pairing problem

  • General principles
  • P. Hall's selection theorem
  • Applications to Latin squares and to coverings by dominoes of pruned chessboards.

[edit] The inclusion-exclusion principal

  • Applications to derangements
  • Applications to counting problems
  • Applications to rook polynomialss

[edit] Linear recurrence relations

[edit] Generating functions

[edit] Catalan numbers

[edit] Partitions

  • Counting various types of partitions
  • Ferrers graphs
  • Self-conjugate partitions

[edit] Symmetric functions (and anti-symmetric functions)

  • Monomial symmetric functions
  • Elementary symmetric functions
  • Theory of equations
  • Newton's formulae and relations between symmetric functions
  • Indexing of symmetric functions by partitions.

[edit] Sequences and Partial Orders

[edit] Ramsey Theory

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