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Theorem fesapo 2434
 Description: "Fesapo", one of the syllogisms of Aristotelian logic. No is , all is , and exist, therefore some is not . (In Aristotelian notation, EAO-4: PeM and MaS therefore SoP.) (Contributed by David A. Wheeler, 28-Aug-2016.) (Revised by David A. Wheeler, 2-Sep-2016.)
Hypotheses
Ref Expression
fesapo.maj
fesapo.min
fesapo.e
Assertion
Ref Expression
fesapo

Proof of Theorem fesapo
StepHypRef Expression
1 fesapo.e . 2
2 fesapo.min . . . 4
32spi 1962 . . 3
4 fesapo.maj . . . . 5
54spi 1962 . . . 4
65con2i 124 . . 3
73, 6jca 541 . 2
81, 7eximii 1717 1
 Colors of variables: wff setvar class Syntax hints:   wn 3   wi 4   wa 376  wal 1450  wex 1671 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1677  ax-4 1690  ax-5 1766  ax-6 1813  ax-7 1859  ax-12 1950 This theorem depends on definitions:  df-bi 190  df-an 378  df-ex 1672 This theorem is referenced by: (None)
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