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Theorem mo4f 2336
 Description: "At most one" expressed using implicit substitution. (Contributed by NM, 10-Apr-2004.)
Hypotheses
Ref Expression
mo4f.1
mo4f.2
Assertion
Ref Expression
mo4f
Distinct variable groups:   ,   ,

Proof of Theorem mo4f
StepHypRef Expression
1 nfv 1707 . . 3
21mo3 2323 . 2
3 mo4f.1 . . . . . 6
4 mo4f.2 . . . . . 6
53, 4sbie 2149 . . . . 5
65anbi2i 694 . . . 4
76imbi1i 325 . . 3
872albii 1641 . 2
92, 8bitri 249 1
 Colors of variables: wff setvar class Syntax hints:  ->wi 4  <->wb 184  /\wa 369  A.wal 1393  F/wnf 1616  [wsb 1739  E*wmo 2283 This theorem is referenced by:  mo4  2337  bm1.1  2440  mob2  3279  moop2  4747 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  ax-13 1999 This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-tru 1398  df-ex 1613  df-nf 1617  df-sb 1740  df-eu 2286  df-mo 2287
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