Conjecture on Fuchsian types of three Nakayama algebras

Let N14(4)N_{14}(4), N14(5)N_{14}(5), and N16(8)N_{16}(8) be the indicated Nakayama algebras, and let a,b,c\langle a,b,c\rangle denote Fuchsian type.

Fuchsian-type conjecture. The following three statements hold:

  1. N14(4)N_{14}(4) has Fuchsian type 2,5,7\langle 2,5,7\rangle.
  2. N14(5)N_{14}(5) has Fuchsian type 2,6,6\langle 2,6,6\rangle.
  3. N16(8)N_{16}(8) has Fuchsian type 2,3,11\langle 2,3,11\rangle.

These cases extend the preceding classification results, but their associated singularities are complete intersections rather than hypersurfaces. Consequently, the suspension functors lack a comparably simple description, and constructing the required tilting objects remains difficult.

Sources & referencesView supporting material

Primary source

Helmut Lenzing, Hagen Meltzer and Shiquan Ruan, “Nakayama algebras and Fuchsian singularities”, arXiv:2112.15587 (2022).

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