Conjectural presentation of the extended triple affine Artin group
Conjectural presentation of the extended triple affine Artin group
Let be a double affine Coxeter diagram, let be the Artin group associated to its finite subdiagram, and let , , and be the finite groups of outer automorphisms associated to the three affine nodes. Let be the set of finite labels of the images of the affine nodes, let satisfy , and write and for the corresponding elements of . Conjectural presentation. The group is generated by and the finite groups , , and , subject to
for , , , and , and to the condition that
is central for every . This is an alternative conjectural presentation of the extended double affine Artin group for diagrams of type ; the supplied text does not state whether the presentation has been proved or disproved.
Sources & referencesView supporting material
Primary source
Bogdan Ion and Siddhartha Sahi, “Double affine Hecke algebras and congruence groups”, arXiv:1506.06417 (2017).
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