theorem ::Theorem 2.3 (1) iff (2')
  L is continuous iff for J, K being non empty set for F being Function
of [:J, K:], the carrier of L st for j being Element of J holds rng((curry F).j
  ) is directed holds Inf Sups curry F = Sup Infs Frege curry F by Lm8,Lm10;
