theorem :: MSATERM:3

for S being non empty non void ManySortedSign
for V being non-empty ManySortedSet of the carrier of S
for A being MSAlgebra over S
for t being c-Term of A,V holds
( ex s being SortSymbol of S ex x being set st
( x in the Sorts of A . s & t . {} = [x,s] ) or ex s being SortSymbol of S ex v being Element of V . s st t . {} = [v,s] or t . {} in [: the carrier' of S,{ the carrier of S}:] )