SnapPea

Cross-platform SnapPy

Marc Culler and Nathan Dunfield’s SnapPy is

a user interface to the SnapPea kernel which runs on Mac OS X, Linux, and Windows. SnapPy combines a link editor and 3D graphics for Dirichlet domains and cusp neighborhoods with a powerful command-line interface based on the Python programming language.

SnapPy is already the preferred user interface for SnapPea. In the not-too-distant future its capabilities should be a superset of those offered by the older Mac OS X interface (see below), at which point the older Mac OS X interface will be retired.

A revised SnapPea kernel is also available.

Mac OS X SnapPea

The older SnapPea for Mac OS X, while still incomplete, supports enough features that you may find it useful for real work. Currently supported features include: cusped census, knot and link entry, drilling and filling, symmetry group, fundamental group, Dirichlet domain and ortholengths. The even older SnapPea also remains available.

Questions? Contact Jeff Weeks.

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