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Plum

A sage module for analyzing plumbed manifolds.

To use:

  1. You will need sagemath installed.

  2. Download the file plum.sage from the latest release. You do not need to download plum.py. That file is only used for generating sphinx documentation.

  3. Open sage and type: load('replace this with the file path of plum.sage')

For example, if the path is user/downloads/plum.sage, you would type: load('user/downloads/plum.sage')

  1. Once you have loaded the script, you can create a new plumbing. For example,\
    P = Plumbing({0:-1, 1:-2, 2:-3, 3:-7}, [(0,1), (0,2), (0,3)])

is the plumbing consisting of 4 vertices {0,1,2,3} with weights -1, -2, -3, and -7 respectively. Vertices 0 and 1, 0 and 2, 0 and 3 are connected by edges.

For more details, see the documentation.