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Axiom ax-ltl6 24994
Description: If  ph holds until  ps then eventually  ps holds. (Contributed by FL, 20-Mar-2011.)
Assertion
Ref Expression
ax-ltl6  |-  ( (
ph  until  ps )  ->  <> ps )

Detailed syntax breakdown of Axiom ax-ltl6
StepHypRef Expression
1 wph . . 3  wff  ph
2 wps . . 3  wff  ps
31, 2wunt 24973 . 2  wff  ( ph  until  ps )
42wdia 24971 . 2  wff  <> ps
53, 4wi 4 1  wff  ( (
ph  until  ps )  ->  <> ps )
Colors of variables: wff set class
This axiom is referenced by:  evpexun  24998  untind  25018
  Copyright terms: Public domain W3C validator