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Tangential 1-blocks over GF(3)
Authors:P. N. Walton  D. J. A. Welsh
Affiliation:

Merton College, University of Oxford, Oxford, U.K.

Abstract:In a fundamental paper on the algebraic theory of graph colouring Tutte [2] proves that the only tangential 1-block over GF(2) is the geometry corresponding to the polygon matroid of the graph K3. For a good discussion of the problem and a direct proof of Tutte's theorem see Aigner [1, p. 373].

The purpose of this note is to prove the following result.

Keywords:
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