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Theorem ndmovrcl 6820
Description: Reverse closure law, when an operation's domain doesn't contain the empty set. (Contributed by NM, 3-Feb-1996.)
Hypotheses
Ref Expression
ndmov.1 dom 𝐹 = (𝑆 × 𝑆)
ndmovrcl.3 ¬ ∅ ∈ 𝑆
Assertion
Ref Expression
ndmovrcl ((𝐴𝐹𝐵) ∈ 𝑆 → (𝐴𝑆𝐵𝑆))

Proof of Theorem ndmovrcl
StepHypRef Expression
1 ndmovrcl.3 . . 3 ¬ ∅ ∈ 𝑆
2 ndmov.1 . . . . 5 dom 𝐹 = (𝑆 × 𝑆)
32ndmov 6818 . . . 4 (¬ (𝐴𝑆𝐵𝑆) → (𝐴𝐹𝐵) = ∅)
43eleq1d 2686 . . 3 (¬ (𝐴𝑆𝐵𝑆) → ((𝐴𝐹𝐵) ∈ 𝑆 ↔ ∅ ∈ 𝑆))
51, 4mtbiri 317 . 2 (¬ (𝐴𝑆𝐵𝑆) → ¬ (𝐴𝐹𝐵) ∈ 𝑆)
65con4i 113 1 ((𝐴𝐹𝐵) ∈ 𝑆 → (𝐴𝑆𝐵𝑆))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 384   = wceq 1483  wcel 1990  c0 3915   × cxp 5112  dom cdm 5114  (class class class)co 6650
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-xp 5120  df-dm 5124  df-iota 5851  df-fv 5896  df-ov 6653
This theorem is referenced by:  ndmovass  6822  ndmovdistr  6823  ndmovord  6824  ndmovordi  6825  caovmo  6871  brecop2  7841  eceqoveq  7853  addcanpi  9721  mulcanpi  9722  ordpipq  9764  recmulnq  9786  recclnq  9788  ltexnq  9797  nsmallnq  9799  ltbtwnnq  9800  prlem934  9855  ltaddpr  9856  ltaddpr2  9857  ltexprlem2  9859  ltexprlem3  9860  ltexprlem4  9861  ltexprlem6  9863  ltexprlem7  9864  addcanpr  9868  prlem936  9869  mappsrpr  9929
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