Section GeneralMonotonicity.
Variable gf: rel -> rel.

Lemma gpaco5_mon_gen (gf' clo clo': rel -> rel) x0 x1 x2 x3 x4 r r' rg rg'
(IN: @gpaco5 gf clo r rg x0 x1 x2 x3 x4)
(gf_mon: monotone5 gf)
(LEgf: gf <6= gf')
(LEclo: clo <6= clo')
(LEr: r <5= r')
(LErg: rg <5= rg') :
@gpaco5 gf' clo' r' rg' x0 x1 x2 x3 x4.