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A set endowed with an everywhere defined binary relation on it. No conditions are imposed. In particular, a magma need not be commutative or associative. Of particular importance is the free magma on an alphabet (set) . A mapping of one magma into another is a morphism of magmas if for all , i.e., if it respects the binary relations.

How to Cite This Entry:
Magma. Encyclopedia of Mathematics. URL:
This article was adapted from an original article by M. Hazewinkel (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article