The Elementary Divisors of the Incidence Matrix of Skew Lines in PG(3,q)

Abstract

The elementary divisors of the incidence matrix of lines in PG(3,q) are computed, where two lines are incident if and only if they are skew.

arXiv comment13 pages. The results of this paper supersede those in the paper arXiv:math/1001.2551 V2. Minor corrections

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