reserve A,B,p,q,r for Element of LTLB_WFF,
  M for LTLModel,
  j,k,n for Element of NAT,
  i for Nat,
  X for Subset of LTLB_WFF,
  F for finite Subset of LTLB_WFF,
  f for FinSequence of LTLB_WFF,
  g for Function of LTLB_WFF,BOOLEAN,
  x,y,z for set,
  P,Q,R for PNPair;

theorem Th7: ([<*> LTLB_WFF,<*A*>])^ = TVERUM '&&' 'not' A
  proof
    nega <*A*> = <*'not' A*> & [<*> l,<*A*>]`1 = <*> l
    by LTLAXIO2:14;
    hence thesis by LTLAXIO2:10, LTLAXIO2:11;
  end;
