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FXrays 1.3.3

Computes extremal rays with filtering

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.

 
File Type Py Version Uploaded on Size
FXrays-1.3.3-cp27-cp27m-macosx_10_5_intel.whl (md5) Python Wheel cp27 2017-01-18 52KB
FXrays-1.3.3-cp27-cp27m-win32.whl (md5) Python Wheel cp27 2017-01-18 23KB
FXrays-1.3.3-cp27-cp27m-win_amd64.whl (md5) Python Wheel cp27 2017-01-18 25KB
FXrays-1.3.3-cp27-cp27mu-manylinux1_x86_64.whl (md5) Python Wheel cp27 2017-01-18 77KB
FXrays-1.3.3-cp34-cp34m-macosx_10_6_intel.whl (md5) Python Wheel cp34 2017-01-18 52KB
FXrays-1.3.3-cp34-cp34m-manylinux1_x86_64.whl (md5) Python Wheel cp34 2017-01-18 80KB
FXrays-1.3.3-cp34-cp34m-win32.whl (md5) Python Wheel cp34 2017-01-18 24KB
FXrays-1.3.3-cp34-cp34m-win_amd64.whl (md5) Python Wheel cp34 2017-01-18 25KB
FXrays-1.3.3-cp35-cp35m-macosx_10_6_intel.whl (md5) Python Wheel cp35 2017-01-18 51KB
FXrays-1.3.3-cp35-cp35m-manylinux1_x86_64.whl (md5) Python Wheel cp35 2017-01-18 80KB
FXrays-1.3.3-cp35-cp35m-win32.whl (md5) Python Wheel cp35 2017-01-18 25KB
FXrays-1.3.3-cp35-cp35m-win_amd64.whl (md5) Python Wheel cp35 2017-01-18 27KB
FXrays-1.3.3-cp36-cp36m-macosx_10_6_intel.whl (md5) Python Wheel cp36 2017-01-18 51KB
FXrays-1.3.3-cp36-cp36m-manylinux1_x86_64.whl (md5) Python Wheel cp36 2017-01-18 80KB
FXrays-1.3.3-cp36-cp36m-win32.whl (md5) Python Wheel cp36 2017-01-18 25KB
FXrays-1.3.3-cp36-cp36m-win_amd64.whl (md5) Python Wheel cp36 2017-01-18 27KB
FXrays-1.3.3-py2.7-linux-x86_64.egg (md5) Python Egg 2.7 2017-01-18 76KB
FXrays-1.3.3-py3.4-linux-x86_64.egg (md5) Python Egg 3.4 2017-01-18 79KB
FXrays-1.3.3-py3.5-linux-x86_64.egg (md5) Python Egg 3.5 2017-01-18 79KB
FXrays-1.3.3-py3.6-linux-x86_64.egg (md5) Python Egg 3.6 2017-01-18 79KB
FXrays-1.3.3.tar.gz (md5) Source 2017-01-18 32KB