let n be Ordinal; for T being connected TermOrder of n
for L being non empty right_complementable add-associative right_zeroed addLoopStr
for p being Polynomial of n,L
for i being Element of NAT st i <= card (Support p) holds
( Support (p | (Upper_Support p,T,i)) = Upper_Support p,T,i & Support (p | (Lower_Support p,T,i)) = Lower_Support p,T,i )
let T be connected TermOrder of n; for L being non empty right_complementable add-associative right_zeroed addLoopStr
for p being Polynomial of n,L
for i being Element of NAT st i <= card (Support p) holds
( Support (p | (Upper_Support p,T,i)) = Upper_Support p,T,i & Support (p | (Lower_Support p,T,i)) = Lower_Support p,T,i )
let L be non empty right_complementable add-associative right_zeroed addLoopStr ; for p being Polynomial of n,L
for i being Element of NAT st i <= card (Support p) holds
( Support (p | (Upper_Support p,T,i)) = Upper_Support p,T,i & Support (p | (Lower_Support p,T,i)) = Lower_Support p,T,i )
let p be Polynomial of n,L; for i being Element of NAT st i <= card (Support p) holds
( Support (p | (Upper_Support p,T,i)) = Upper_Support p,T,i & Support (p | (Lower_Support p,T,i)) = Lower_Support p,T,i )
let i be Element of NAT ; ( i <= card (Support p) implies ( Support (p | (Upper_Support p,T,i)) = Upper_Support p,T,i & Support (p | (Lower_Support p,T,i)) = Lower_Support p,T,i ) )
set u = Upper_Support p,T,i;
set pu = p | (Upper_Support p,T,i);
set l = Lower_Support p,T,i;
set pl = p | (Lower_Support p,T,i);
assume
i <= card (Support p)
; ( Support (p | (Upper_Support p,T,i)) = Upper_Support p,T,i & Support (p | (Lower_Support p,T,i)) = Lower_Support p,T,i )
then A1:
Upper_Support p,T,i c= Support p
by Def2;
Support (p | (Upper_Support p,T,i)) = (Support p) /\ (Upper_Support p,T,i)
by Th16;
hence
Support (p | (Upper_Support p,T,i)) = Upper_Support p,T,i
by A1, XBOOLE_1:28; Support (p | (Lower_Support p,T,i)) = Lower_Support p,T,i
Support (p | (Lower_Support p,T,i)) = (Support p) /\ (Lower_Support p,T,i)
by Th16;
hence
Support (p | (Lower_Support p,T,i)) = Lower_Support p,T,i
by XBOOLE_1:28, XBOOLE_1:36; verum