Ajout des equations liant PGD et TDG

	new file:   Equations/Equations.PGD-TDG.pdf
	new file:   Equations/Equations.PGD-TDG.tex
	renamed:    Equations/Equations.pdf -> Equations/Equations.TDG-Dyna.pdf
	renamed:    Equations/Equations.tex -> Equations/Equations.TDG-Dyna.tex