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Inverse Semigroups Acting on Graphs
There has been much work done recently on the action of semigroups on sets with some important applications to, for example, the theory and structure of semigroup amalgams. It seems natural to consider the actions of semigroups on sets ‘with structure’ and in particular on graphs and trees. The theory of group actions has proved a powerful tool in combinatorial group theory and it is reasonable...
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ژورنال
عنوان ژورنال: Journal of the Australian Mathematical Society
سال: 1967
ISSN: 0004-9735
DOI: 10.1017/s1446788700004171