Counterexamples to Auslander–Reiten, Tachikawa and related homological conjectures

Formal proof listed 2 papers September 23, 2026
What the paper claims, in its own words

Constructs finite-dimensional algebras over a characteristic-two rational-function field that disprove the Auslander–Reiten and Gorenstein-projective conjectures, and Tachikawa's second conjecture. An associated endomorphism algebra also disproves the classical, generalized and strong Nakayama conjectures, the Auslander–Gorenstein conjecture, and the Wakamatsu tilting conjecture. The counterexamples persist under every extension of the base field.

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The original papers (2)