let f be non constant standard special_circular_sequence; :: thesis: ( f /. 1 = E-min (L~ f) & E-min (L~ f) <> S-max (L~ f) implies (E-min (L~ f)) .. f < (S-max (L~ f)) .. f )
A1: S-max (L~ f) in rng f by SPRECT_2:46;
A2: E-min (L~ f) in rng f by SPRECT_2:49;
assume that
A3: f /. 1 = E-min (L~ f) and
A4: E-min (L~ f) <> S-max (L~ f) ; :: thesis: (E-min (L~ f)) .. f < (S-max (L~ f)) .. f
A5: (E-min (L~ f)) .. f = 1 by A3, FINSEQ_6:47;
(S-max (L~ f)) .. f in dom f by A1, FINSEQ_4:30;
then (S-max (L~ f)) .. f >= 1 by FINSEQ_3:27;
hence (E-min (L~ f)) .. f < (S-max (L~ f)) .. f by A1, A2, A4, A5, FINSEQ_5:10, XXREAL_0:1; :: thesis: verum