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arXiv:0708.3623
From: William Y. C. Chen <chen@nankai.edu.cn>
Date: Mon, 27 Aug 2007 15:03:23 GMT   (7kb)

Title: Derangements and Relative Derangements of Type $B$
Authors: William Y.C. Chen and Jessica C.Y. Zhang
Categories: math.CO
Comments: 7 pages
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  By introducing the notion of relative derangements of type $B$, also called
signed relative derangements, which are defined in terms of signed
permutations, we obtain a type $B$ analogue of the well-known relation between
relative derangements and the classical derangements. While this fact can be
proved by using the principle of inclusion and exclusion, we present a
combinatorial interpretation with the aid of the intermediate structure of
signed skew derangements.
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Contains:
 signed-sd-s.tex: 22026 bytes

Stored as: 0708.3623.gz (7kb)

Warnings:

Author 1: William Y.C. Chen
Author 2: Jessica C.Y. Zhang
-> Number of authors = 2


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