On the fibre product of incidence structures |
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Authors: | Emanuel Kolb |
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Institution: | (1) Fachbereich Mathematik, Technische Hochschule Darmstadt, D-64289 Darmstadt, Germany |
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Abstract: | It is shown that in the category of incidence structures a fibre product (pull back) always exists. Several applications to Klingenberg incidence structures and divisible designs are given.Dedicated to Professor Johannes Böhm on the occasion of his 70th birthday |
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