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Exact Matching in Matrix Multiplication Time

Published: August 6, 2025 | arXiv ID: 2508.04081v1

By: Ryotaro Sato, Yutaro Yamaguchi

Potential Business Impact:

Finds best matches faster than before.

Initiated by Mulmuley, Vazirani, and Vazirani (1987), many algebraic algorithms have been developed for matching and related problems. In this paper, we review basic facts and discuss possible improvements with the aid of fast computation of the characteristic polynomial of a matrix. In particular, we show that the so-called exact matching problem can be solved with high probability in asymptotically the same time order as matrix multiplication. We also discuss its extension to the linear matroid parity problem.

Country of Origin
🇯🇵 Japan

Page Count
12 pages

Category
Computer Science:
Data Structures and Algorithms