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1. Counting signed vexillary permutations.

Author

Gao, Yibo and Hänni, Kaarel

Subjects
*PERMUTATIONS, *COUNTING, *LOGICAL prediction
Abstract

We show that the number of signed permutations avoiding 1234 equals the number of signed permutations avoiding 2143 (also called vexillary signed permutations), resolving a conjecture by Anderson and Fulton. The main tool that we use is the generating tree developed by West. Many further directions are mentioned in the end. [ABSTRACT FROM AUTHOR]

Published
2020
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