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0111 · Nov 201619922001200920172026
3 results for pseudomodularity

Study jigsaw constructions of hyperbolic lattices and answer questions on arithmeticity and pseudomodularity.

problem Constructing and analyzing non-commensurable, non-uniform, non-arithmetic lattices in hyperbolic geometry.
method Hyperbolic jigsaw construction and recursive formulas for tessellations.
result Demonstration of recursive formula for tessellation of hyperbolic plane, generalizing Farey addition.

We show that there are infinitely many commensurability classes of pseudomodular groups, thus answering a question raised by Long and Reid. These are Fuchsian groups whose cusp set is all of the rationals but which are not commensurable to the modular group. We do this by introducing a general construction for the fund…

2016-11-09abs ↗pdf ↗