let z be V19() standard clockwise_oriented special_circular_sequence; ( z /. 1 = S-min (L~ z) & S-max (L~ z) <> E-min (L~ z) implies (E-min (L~ z)) .. z < (S-max (L~ z)) .. z )
set g = Rotate (z,(N-min (L~ z)));
A1:
L~ z = L~ (Rotate (z,(N-min (L~ z))))
by REVROT_1:33;
N-min (L~ z) in rng z
by SPRECT_2:39;
then A2:
(Rotate (z,(N-min (L~ z)))) /. 1 = N-min (L~ (Rotate (z,(N-min (L~ z)))))
by A1, FINSEQ_6:92;
then A3:
(S-max (L~ (Rotate (z,(N-min (L~ z)))))) .. (Rotate (z,(N-min (L~ z)))) < (S-min (L~ (Rotate (z,(N-min (L~ z)))))) .. (Rotate (z,(N-min (L~ z))))
by SPRECT_2:73;
assume that
A4:
z /. 1 = S-min (L~ z)
and
A5:
S-max (L~ z) <> E-min (L~ z)
; (E-min (L~ z)) .. z < (S-max (L~ z)) .. z
for i being Nat st 1 < i & i < len z holds
z /. i <> z /. 1
by GOBOARD7:36;
then A6:
Rotate ((Rotate (z,(N-min (L~ z)))),(S-min (L~ z))) = z
by A4, FINSEQ_6:181;
A7:
( S-max (L~ (Rotate (z,(N-min (L~ z))))) in rng (Rotate (z,(N-min (L~ z)))) & E-min (L~ (Rotate (z,(N-min (L~ z))))) in rng (Rotate (z,(N-min (L~ z)))) )
by SPRECT_2:42, SPRECT_2:45;
( S-min (L~ (Rotate (z,(N-min (L~ z))))) in rng (Rotate (z,(N-min (L~ z)))) & (E-min (L~ (Rotate (z,(N-min (L~ z)))))) .. (Rotate (z,(N-min (L~ z)))) < (S-max (L~ (Rotate (z,(N-min (L~ z)))))) .. (Rotate (z,(N-min (L~ z)))) )
by A1, A5, A2, SPRECT_2:41, SPRECT_2:72;
hence
(E-min (L~ z)) .. z < (S-max (L~ z)) .. z
by A1, A6, A7, A3, Th11; verum