let n be Ordinal; for T being connected TermOrder of n
for L being non trivial right_complementable almost_left_invertible well-unital distributive Abelian add-associative right_zeroed associative commutative doubleLoopStr
for P being Subset of (Polynom-Ring (n,L))
for f, g being Polynomial of n,L st PolyRedRel (P,T) reduces f - g, 0_ (n,L) holds
f,g are_convertible_wrt PolyRedRel (P,T)
let T be connected TermOrder of n; for L being non trivial right_complementable almost_left_invertible well-unital distributive Abelian add-associative right_zeroed associative commutative doubleLoopStr
for P being Subset of (Polynom-Ring (n,L))
for f, g being Polynomial of n,L st PolyRedRel (P,T) reduces f - g, 0_ (n,L) holds
f,g are_convertible_wrt PolyRedRel (P,T)
let L be non trivial right_complementable almost_left_invertible well-unital distributive Abelian add-associative right_zeroed associative commutative doubleLoopStr ; for P being Subset of (Polynom-Ring (n,L))
for f, g being Polynomial of n,L st PolyRedRel (P,T) reduces f - g, 0_ (n,L) holds
f,g are_convertible_wrt PolyRedRel (P,T)
let P be Subset of (Polynom-Ring (n,L)); for f, g being Polynomial of n,L st PolyRedRel (P,T) reduces f - g, 0_ (n,L) holds
f,g are_convertible_wrt PolyRedRel (P,T)
let f, g be Polynomial of n,L; ( PolyRedRel (P,T) reduces f - g, 0_ (n,L) implies f,g are_convertible_wrt PolyRedRel (P,T) )
set R = PolyRedRel (P,T);
assume
PolyRedRel (P,T) reduces f - g, 0_ (n,L)
; f,g are_convertible_wrt PolyRedRel (P,T)
then
f,g are_convergent_wrt PolyRedRel (P,T)
by Th50;
then consider h being object such that
A1:
PolyRedRel (P,T) reduces f,h
and
A2:
PolyRedRel (P,T) reduces g,h
by REWRITE1:def 7;
(PolyRedRel (P,T)) ~ reduces h,g
by A2, REWRITE1:24;
then A3:
(PolyRedRel (P,T)) \/ ((PolyRedRel (P,T)) ~) reduces h,g
by REWRITE1:22, XBOOLE_1:7;
(PolyRedRel (P,T)) \/ ((PolyRedRel (P,T)) ~) reduces f,h
by A1, REWRITE1:22, XBOOLE_1:7;
then
(PolyRedRel (P,T)) \/ ((PolyRedRel (P,T)) ~) reduces f,g
by A3, REWRITE1:16;
hence
f,g are_convertible_wrt PolyRedRel (P,T)
by REWRITE1:def 4; verum