theorem Th26: :: MATRIX13:26

for i, j, n being Nat
for K being Field
for nt, nt1 being Element of n -tuples_on NAT
for M being Matrix of K st i in Seg n & j in Seg n & nt . i = nt . j & i <> j holds
Det (Segm (M,nt,nt1)) = 0. K