theorem Th5: :: MSUALG_4:5
for S being non empty non void ManySortedSign
for U1, U2 being non-empty MSAlgebra over S
for F being ManySortedFunction of U1,U2 st F is_epimorphism U1,U2 holds
MSHomQuot F is_isomorphism QuotMSAlg (U1,(MSCng F)),U2