add papers
add cours note de physique du solide
add paper
update data reduction subsection
update decision tree subsection
add bayes classification subsection
add socket note and comment
add a matrix of confusion for data mining note
add unp note
update
update unp
add metapost macros
chang some constances and add comment
add rule for metapost
update readme
add TCP connection process
update vimrc for windows
add rotationnel, divergence operator
add electromagnetisme
add materiau section