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coq-alga

This repository contains some theory about algebraic graphs and prove a few theorems about homomorphisms in Coq.

The files in the src/ directory are organized as follow:

  • Graph.v is containing basic definitions, axioms and tools to use them with Coq.
  • Homomorphism.v is giving a definition and prove some theorems about structural homomorphism.
  • ReducedHomo.v is giving a definition and prove some theorems about a kind of homomorphism, preserving a graph equality relation.
  • SmartHomo.v is giving a definition and prove some theorems about a kind of reduced homomorphism.

A more precise analysis of these results is given at https://blog.nyarlathotep.one/2018/12/algebraic-graphs-homomorphisms/.

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A bit of coq-proven alga

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