English Explanatory Dictionary

disjoint union

English dictionary entry

Meanings

noun
  1. A union of sets forced to be disjoint by attaching information referring to the original sets to their elements (i.e., by using indexing).
  2. A union of sets which are already pairwise disjoint.
  3. The disjoint union of the underlying sets of a given family of topological spaces, equipped with a topology.

Word forms

disjoint union disjoint unions

Synonyms

discriminated union coproduct direct sum free sum free union topological sum

Related words

coproduct disjunctive union product topology

Derived words

disjoint union topology
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