Skip to main content
Help us improve Python packaging – donate today!

Computes extremal rays with filtering

Project Description

This package is a small, fast implementation of an algorithm for finding extremal rays of a polyhedral cone, with filtering. It is intended for finding normal surfaces in triangulated 3-manifolds, and therefore does not implement various features that might be useful for general extremal ray problems.

The setup is this. Define the support of a vector v in R^n to be the set of indices i such that v_i is non-zero. We are given an integer matrix M, typically with many more columns than rows, and a list of “illegal supports”. The support of a vector is illegal if its support contains one of the illegal supports on the list.

We want to find all the extremal rays of the cone (Null space of M) intersect (positive orthant), which are generated by vectors with legal support. (The restriction to vector with legal support is what is meant by “filtering”.)

The algorithm is due to Dave Letscher, and incorporates ideas of Komei Fukuda’s.

Release history Release notifications

This version
History Node

1.3.3

History Node

1.3.2

History Node

1.3.1

History Node

1.3

History Node

1.2

History Node

0.0

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
FXrays-1.3.3-cp27-cp27m-macosx_10_5_intel.whl (54.2 kB) Copy SHA256 hash SHA256 Wheel cp27 Jan 18, 2017
FXrays-1.3.3-cp27-cp27mu-manylinux1_x86_64.whl (79.6 kB) Copy SHA256 hash SHA256 Wheel cp27 Jan 18, 2017
FXrays-1.3.3-cp27-cp27m-win32.whl (24.0 kB) Copy SHA256 hash SHA256 Wheel cp27 Jan 18, 2017
FXrays-1.3.3-cp27-cp27m-win_amd64.whl (25.8 kB) Copy SHA256 hash SHA256 Wheel cp27 Jan 18, 2017
FXrays-1.3.3-cp34-cp34m-macosx_10_6_intel.whl (53.3 kB) Copy SHA256 hash SHA256 Wheel cp34 Jan 18, 2017
FXrays-1.3.3-cp34-cp34m-manylinux1_x86_64.whl (82.7 kB) Copy SHA256 hash SHA256 Wheel cp34 Jan 18, 2017
FXrays-1.3.3-cp34-cp34m-win32.whl (24.6 kB) Copy SHA256 hash SHA256 Wheel cp34 Jan 18, 2017
FXrays-1.3.3-cp34-cp34m-win_amd64.whl (26.5 kB) Copy SHA256 hash SHA256 Wheel cp34 Jan 18, 2017
FXrays-1.3.3-cp35-cp35m-macosx_10_6_intel.whl (53.2 kB) Copy SHA256 hash SHA256 Wheel cp35 Jan 18, 2017
FXrays-1.3.3-cp35-cp35m-manylinux1_x86_64.whl (82.3 kB) Copy SHA256 hash SHA256 Wheel cp35 Jan 18, 2017
FXrays-1.3.3-cp35-cp35m-win32.whl (25.9 kB) Copy SHA256 hash SHA256 Wheel cp35 Jan 18, 2017
FXrays-1.3.3-cp35-cp35m-win_amd64.whl (28.0 kB) Copy SHA256 hash SHA256 Wheel cp35 Jan 18, 2017
FXrays-1.3.3-cp36-cp36m-macosx_10_6_intel.whl (53.2 kB) Copy SHA256 hash SHA256 Wheel cp36 Jan 18, 2017
FXrays-1.3.3-cp36-cp36m-manylinux1_x86_64.whl (82.3 kB) Copy SHA256 hash SHA256 Wheel cp36 Jan 18, 2017
FXrays-1.3.3-cp36-cp36m-win32.whl (25.9 kB) Copy SHA256 hash SHA256 Wheel cp36 Jan 18, 2017
FXrays-1.3.3-cp36-cp36m-win_amd64.whl (27.9 kB) Copy SHA256 hash SHA256 Wheel cp36 Jan 18, 2017
FXrays-1.3.3-py2.7-linux-x86_64.egg (78.6 kB) Copy SHA256 hash SHA256 Egg 2.7 Jan 18, 2017
FXrays-1.3.3-py3.4-linux-x86_64.egg (81.8 kB) Copy SHA256 hash SHA256 Egg 3.4 Jan 18, 2017
FXrays-1.3.3-py3.5-linux-x86_64.egg (81.4 kB) Copy SHA256 hash SHA256 Egg 3.5 Jan 18, 2017
FXrays-1.3.3-py3.6-linux-x86_64.egg (81.4 kB) Copy SHA256 hash SHA256 Egg 3.6 Jan 18, 2017
FXrays-1.3.3.tar.gz (33.1 kB) Copy SHA256 hash SHA256 Source None Jan 18, 2017

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging CloudAMQP CloudAMQP RabbitMQ AWS AWS Cloud computing Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page