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Theorem mof 32726
Description: There exist at most one set, such that is true. (Contributed by Anthony Hart, 13-Sep-2011.)
Assertion
Ref Expression
mof ∃*𝑥

Proof of Theorem mof
StepHypRef Expression
1 nextf 32722 . 2 ¬ ∃𝑥
2 exmo 2657 . 2 (∃𝑥⊥ ∨ ∃*𝑥⊥)
31, 2mtpor 1850 1 ∃*𝑥
Colors of variables: wff setvar class
Syntax hints:  wfal 1650  wex 1859  ∃*wmo 2631
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1877
This theorem depends on definitions:  df-bi 198  df-or 866  df-tru 1641  df-fal 1651  df-ex 1860  df-mo 2635
This theorem is referenced by:  amosym1  32742
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