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Theorem moanmo 2353
Description: Nested "at most one" quantifiers. (Contributed by NM, 25-Jan-2006.)
Assertion
Ref Expression
moanmo

Proof of Theorem moanmo
StepHypRef Expression
1 id 22 . . 3
2 nfmo1 2295 . . . 4
32moanim 2350 . . 3
41, 3mpbir 209 . 2
5 ancom 450 . . 3
65mobii 2307 . 2
74, 6mpbir 209 1
Colors of variables: wff setvar class
Syntax hints:  ->wi 4  /\wa 369  E*wmo 2283
This theorem is referenced by:  moaneu  2354
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1618  ax-4 1631  ax-5 1704  ax-6 1747  ax-7 1790  ax-10 1837  ax-11 1842  ax-12 1854
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-tru 1398  df-ex 1613  df-nf 1617  df-eu 2286  df-mo 2287
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