Branch rings, thinned rings, tree enveloping rings

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We develop the theory of “branch algebras”, which are infinitedimensional associative algebras that are isomorphic, up to taking subrings of finite codimension, to a matrix ring over themselves. The main examples come from groups acting on trees. In particular, for every field k we construct a k-algebra K which • is finitely generated and infinite-dimensional, but has only finite-dimensional qu...

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Evidence from Tree rings

Introduction Conclusions References

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ژورنال

عنوان ژورنال: Israel Journal of Mathematics

سال: 2006

ISSN: 0021-2172,1565-8511

DOI: 10.1007/bf02773601