Euler characteristic for simplicial complexes
JavaScript
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README.md

euler-characteristic

Computes the Euler characteristic of a simplicial complex, ignoring duplicate cells.

Install

npm install euler-characteristic

Example

var euler = require("euler-characteristic")

//Compute Euler characteristic of circle
console.log(euler([[0,1], [1,2], [2,0]])) //Prints: 0

//Compute Euler characteristic of Stanford bunny
console.log(euler(require("bunny")))      //Prints: 2
                                          //(the bunny is homotopic to a sphere after all)

require("euler-characteristic")(cells)

Computes the Euler characteristic of a simplicial complex, ignoring any duplicate cells.

  • cells is a simplicial complex

Returns An integer representing the Euler characteristic of the cell complex

Credits

(c) 2013 Mikola Lysenko. MIT License