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math.CO2020
Covers of generalized quadrangles, 2. Kantor-Knuth covers and embedded ovoids
J. A. Thas, K. Thas
In this paper, which is a sequel to \cite{part1}, we proceed with our study of covers and decomposition laws for geometries related to generalized quadrangles. In particular, we ob…
math.CO2017
The geometry of drums
Koen Thas
We introduce the new concept of D-geometry (or "drum geometry"), which has been recently discovered by the author in \cite{KT-DRUMS} when constructing and classifying isospectral a…