Tilting conjecture for silting objects over d-representation infinite algebras

Let AA be a dd-representation infinite algebra, meaning that AA is finite dimensional, gl.dimAd\operatorname{gl.dim} A\leq d, and νdnAmodAperA\nu_d^{-n}A\in\operatorname{mod} A\subseteq\operatorname{per} A for every n0n\geq0. Let TsiltdAT\in\operatorname{silt}^d A.

Silting mutation conjecture. Then TT is tilting and EndA(T)\operatorname{End}_A(T) is a dd-representation infinite algebra.

The preceding theorem proves this conclusion for silting objects obtained by a specified silting mutation, under the additional inequality μP(A)νd1A\mu^-_P(A)\geq\nu_d^{-1}A. The conjecture asks whether the same property holds for every TsiltdAT\in\operatorname{silt}^d A.

Sources & referencesView supporting material

Primary source

Ryu Tomonaga, “On silting mutations preserving global dimension”, arXiv:2510.26206 (2025).

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