let X be non empty Ordinal; for x being Element of X
for L being non empty non trivial well-unital doubleLoopStr
for e being Function of X,L holds eval (UnitBag x),e = e . x
let x be Element of X; for L being non empty non trivial well-unital doubleLoopStr
for e being Function of X,L holds eval (UnitBag x),e = e . x
let L be non empty non trivial well-unital doubleLoopStr ; for e being Function of X,L holds eval (UnitBag x),e = e . x
let e be Function of X,L; eval (UnitBag x),e = e . x
reconsider edx = e . x as Element of L ;
support (UnitBag x) = {x}
by Th8;
hence eval (UnitBag x),e =
(power L) . (e . x),((UnitBag x) . x)
by POLYNOM2:17
.=
(power L) . (e . x),(0 + 1)
by Th9
.=
((power L) . edx,0 ) * edx
by GROUP_1:def 8
.=
(1_ L) * edx
by GROUP_1:def 8
.=
e . x
by GROUP_1:def 5
;
verum