interval-union ( i1 i2 -- i3 )
Factor handbook » The language » Numbers » Intervals » Set-theoretic operations on intervals

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Vocabulary
math.intervals

Inputs
i1an interval
i2an interval


Outputs
i3an interval


Word description
Outputs the smallest interval containing the set-theoretic union of i1 and i2 (the union itself may not be an interval).

Definition