2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79533These notes contain a survey of some aspects of the theory of graded differential algebras and of noncommutative differential calculi as well as of some applications connected with physics. They also give a description of several new developments.71 pages; minor typo correctionsQuantum AlgebraHigh Energy Physics - TheoryMathematical Physicstext