PrintForm Definitions languages Sections AutomataTheory Doc

At: lang union assoc

Alph:Type, L,M,N:LangOver(Alph). (L U (M U N)) = ((L U M) U N)
By:
Unfold `languages` 0
THEN
Unfold `lang_eq` 0
THEN
Unfold `lang_union` 0
THEN
UnivCD
THEN
Reduce 0
THEN
ProveProp
Generated subgoals:

None

About:
alluniverse