theorem Th21:
for
K being
Field for
a,
b,
c,
d,
e,
f,
g,
h,
i being
Element of
K for
M being
Matrix of 3,
K st
M = <*<*a,b,c*>,<*d,e,f*>,<*g,h,i*>*> holds
for
p being
Element of
Permutations 3 st
p = <*3,2,1*> holds
Path_matrix (
p,
M)
= <*c,e,g*>