A counterexample to the -dimension conjecture
arXiv:1911.00614 · doi:10.1007/s00209-021-02795-7
Abstract
In 2005, the second author and Todorov introduced an upper bound on the finitistic dimension of an Artin algebra, now known as the ϕ-dimension. The ϕ-dimension conjecture states that this upper bound is always finite, a fact that would imply the finitistic dimension conjecture. In this paper, we present a counterexample to the ϕ-dimension conjecture and explain where it comes from. We also discuss implications for further research and the finitistic dimension conjecture.
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