Combinatorics | Inequalities | Conjectures

Dittert conjecture

The Dittert conjecture, or Dittert–Hajek conjecture, is a mathematical hypothesis (in combinatorics) concerning the maximum achieved by a particular function of matrices with real, nonnegative entries satisfying a summation condition. The conjecture is due to Eric Dittert and (independently) Bruce Hajek. Let be a square matrix of order with nonnegative entries and with . Its permanent is defined as , where the sum extends over all elements of the symmetric group. The Dittert conjecture asserts that the function defined by is (uniquely) maximized when , where is defined to be the square matrix of order with all entries equal to 1. (Wikipedia).

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From playlist Additional Topics: Generating Functions and Intro to Number Theory (Discrete Math)

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Related pages

Combinatorics | Square matrix | Permanent (mathematics) | Symmetric group