theorem :: MSATERM:9

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
for s being SortSymbol of S
for v being Element of V . s st t . {} = [v,s] holds
t = root-tree [v,s]