 They have been further studied in the Argentinian algebraic logic school of Antonio Monteiro.De Morgan algebras are important for the study of the mathematical aspects of fuzzy logic.The standard fuzzy algebra "F" = ([0, 1], max("x", "y"), min("x", "y"), 0, 1, 1 − "x") is an example of a De Morgan algebra where the laws of excluded middle and noncontradiction do not hold.