In domain theory, a union (or sum) which results in a domain without a least element.

In addition suitable contents:
[ = ] [ ai ] [ am ] [ ar ] [ arc ] [ as ] [ ch ] [ do ] [ domain ] [ domain theory ] [ du ] [ element ] [ er ] [ es ] [ fi ] [ file ] [ h ] [ hr ] [ id ] [ il ] [ in ] [ io ] [ it ] [ Lex ] [ lt ] [ ma ] [ mo ] [ mod ] [ module ] [ na ] [ ni ] [ om ] [ ph ] [ query ] [ rc ] [ re ] [ se ] [ st ] [ su ] [ sum ] [ th ] [ theory ] [ um ] [ union ]