Section GeneralMonotonicity.
Variable gf: rel -> rel.

Lemma gpaco1_mon_gen (gf' clo clo': rel -> rel) x0 r r' rg rg'
(IN: @gpaco1 gf clo r rg x0)
(gf_mon: monotone1 gf)
(LEgf: gf <2= gf')
(LEclo: clo <2= clo')
(LEr: r <1= r')
(LErg: rg <1= rg') :
@gpaco1 gf' clo' r' rg' x0.