Abstract
Abstract In this note we correct an oversight in [A geometric model for the module category of a gentle algebra, Int. Math. Res. Not. IMRN 2021, no. 15, 11357–11392] regarding morphisms between indecomposable modules of a gentle algebra. The oversight only occurs when bands are involved, which can be easily corrected by considering infinite periodic strings associated to bands and the universal cover of the surface associated to the gentle algebra.
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