Two New Criteria for Comparison in the Bruhat Order

ELECTRONIC JOURNAL OF COMBINATORICS（2004）

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摘要

We give two new criteria by which pairs of permutations may be compared in defining the Bruhat order (of type A). One criterion utilizes totally nonnegative polynomials and the other utilizes Schur functions.

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关键词

schur nonnegativity,. total nonnegativity,bruhat order.,bruhat order

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