News

  • Version 2.8 (June 2020): New features include:

  • Version 2.7 (July 2019): New features include:

    • Python 3 is now recommended over Python 2 on all platforms; the default Mac and Windows apps use Python 3 rather than Python 2. The only difference most users will notice is that one must type print(blah) instead of print blah.

    • Verified computations: performance improvements by switching to the Krawczyk test.

    • Support for SageMath 8.8.

    • Installation instructions extensively updated.

    • GUI improvements, especially on macOS. These include improved support for dark mode and tabs on macOS Mojave and preliminary support for macOS Catalina.

  • Version 2.6.1 (August 2018): New features include:

  • Version 2.6 (Nov 2017): New features include:

    • Support for macOS High Sierra, SageMath 8.1, and Windows systems using non-Latin alphabets.

    • Many bug fixes, including improved Python 3 support.

  • Version 2.5 (Feb 2017): New features include:

    • Rigorous computation of hyperbolic volume.

    • STL export of Dirichlet domains for 3D printing, contributed by Jose Sanchez.

    • Support for Python 3, SageMath 7.5, 7.6, and 8.0, and many more versions of Python on Windows.

    • Much improved infrastructure for testing and distributing SnapPy.

  • Version 2.4 (May 2016): New features include:

  • Version 2.3 (March 2015): New features include:

    • Major improvements to the link and planar diagram component, including link simplification, random links, and better documentation.

    • Basic support for spun normal surfaces.

    • New extra features when used inside of Sage:

    • Better compatibility with OS X Yosemite and Windows 8.1.

    • Development changes:

      • Major source code reorganization/cleanup.

      • Source code repository moved to Bitbucket.

      • Python modules now hosted on PyPI, simplifying installation.

  • Version 2.2 (June 2014): Includes Ben Burton’s census of orientable cusped manifolds with 9 tetrahedra.

  • Version 2.1 (February 2014): New high-precision manifolds (ManifoldHP) which compute hyperbolic stuctures (and everything related) in quad-double (212 bit) precision.

  • Version 2.0 (September 2013): Many new features, including:

    • A manifold browser window for easily examining a particular manifold.

    • Many improvements to the link editor, including

      • A smoothed view mode with image export to EPS/PDF/SVG/TikZ.

      • Producing a fully editable link from combinatorial data like a DT code.

    • Splitting manifolds along surfaces of non-negative euler characteristic.

    • Generalizing the ptolemy obstruction class to allow computation of PGL(3,C)-representations and improving usability of the ptolemy module.

    • CensusKnots now includes knot exteriors with 8 tetrahedra.

  • Version 1.8 (May 2013) improves handling of DT codes and adds the HTLinkExteriors census, which provides identification for knots and links up to 14 crossings.

  • Version 1.7 (November 2012) incorporates the ptolemy module for studying representations of 3-manifold groups into pSL(N, C).

  • Version 1.6 (August 2012) includes a new way to make links and some support for arbitrary precision calculation.

  • Version 1.5 (February 2012) includes much improved manifold censuses.

  • Version 1.4 (December 2011) uses the current release of IPython, which has been completely rewritten.

  • Version 1.3.10 (July 2011) incorporates Twister.

  • Version 1.3 (February 2011) has a completely redesigned cusp horoball viewer and many bug fixes!

  • Version 1.2 (December 2010).

  • Version 1.1 (February 2010).

  • Version 1.0 (August 2009) Initial version.