The graded clock condition characterization for gentle one-cycle algebras

Let A=kQ/IA=kQ/I be a graded gentle one-cycle algebra. Define d+d_+ (respectively, dd_-) as the difference between the number of clockwise (respectively, counterclockwise) oriented relations and the sum of the degrees of the clockwise (respectively, counterclockwise) oriented arrows. The algebra AA satisfies the graded clock condition when d+=dd_+=d_-.

Graded clock condition conjecture. A graded gentle one-cycle algebra satisfies the graded clock condition if and only if it is derived equivalent to Γ(p,q,0)\Gamma(p,q,0) for some p,q>0p,q>0 or to Γ(0,q,q)\Gamma'(0,q,q), which is Koszul dual to Γ(0,q,0)\Gamma(0,q,0), for some q>0q>0.

This conjecture characterizes the graded gentle one-cycle algebras satisfying the graded clock condition by their derived-equivalence classes. The supplied text does not state whether the conjecture has been proved or disproved.

Sources & referencesView supporting material

Primary source

Martin Kalck and Dong Yang, “Derived categories of graded gentle one-cycle algebras”, arXiv:1611.01903 (2017).

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