
theorem
  for T being non empty LinearTopSpace,
      L being non empty transitive reflexive RelStr,
      f being Function of [#]L,the carrier of T,
      x being Point of T,
      B being basis of BOOL2F NeighborhoodSystem x st [#]L is directed holds
  x in lim_f f
    iff
  for b being Element of B ex i be Element of L st
  for j being Element of L st i <=j holds f.j in b by CARDFIL2:84;
