Minors of a skew symmetric matrix: A combinatorial approach
Lars Winther Christensen, Oana Veliche, Jerzy Weyman·2020-07-30·via math.CO updates on arXiv.org
We use Knuth's combinatorial approach to Pfaffians to reprove and clarify a century-old formula, due to Brill. It expresses arbitrary minors of a skew symmetric matrix in terms of Pfaffians.