Title: Optional

Text: The objects with which we usually operate in mathematics are called classes; they arise by abstraction from the intuitive notion of a collection of things. This intuitive image is unsatisfactory for mathematical operations because it gives rise to contradictions, so we must consider classes as defined by a determined system of axioms. We consider here the same system of axioms as in the book Universal Algebra, by P. M. Cohn. Jeder Absatz wird ein Test sein.

Save test: Verwenden Sie dies, wenn Sie diesen Schreibtest teilen möchten (nur für authentifizierte Benutzer).