What it means
Description
The operation that collects elements belonging to either set.
In mathematics
Mathematical Usage
- Combine all elements from sets
- Event union in probability
In science
Scientific Usage
- Combined state spaces
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Interesting Fact
The symbol ∪, introduced by Giuseppe Peano in 1888, was referred to as 'disjunction' in logic and also as 'logical sum' by Peano. It is read as 'or'.