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For manipulating curves and measured laminations on surfaces and producing mapping tori.

Project description

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Flipper is a program for computing the action of mapping classes on laminations on punctured surfaces using ideal triangulation coordinates. It can decide the Nielsen–Thurston type of a given mapping class and, for pseudo-Anosov mapping classes, construct a layered, veering triangulation of their mapping torus, as described by Agol.

Flipper officially supports Python 2.7 and 3.5 – 3.7. It also runs on Sage which is currently the fastest way to run it. If you need even more speed (~25% more) then consider running flipper with the -O optimise bytecode option.

Note

The use of Python 3 is highly preferred over Python 2. Consider upgrading your applications and infrastructure if you find yourself still using Python 2 in production today. If you are using Python 3, congratulations — you are indeed a person of excellent taste. — Kenneth Reitz

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