Coq is a proof assistant. According to the Coq homepage it "provides a formal language to write mathematical definitions, executable algorithms and theorems together with an environment for semi-interactive development of machine-checked proofs."
This bundle is meant to be installed with pathogen. After following pathogen's installation process, run the following commands and restart vim.
cd ~/.vim/bundle git clone https://github.com/jvoorhis/coq.vim.git
The original sources were released under the public domain.
a convenient distribution of these scripts, provided by Jeremy Voorhis, and is
also provided under the public domain.