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Theorem tposssxp 7752
 Description: The transposition is a subset of a Cartesian product. (Contributed by Mario Carneiro, 12-Jan-2017.)
Assertion
Ref Expression
tposssxp tpos 𝐹 ⊆ ((dom 𝐹 ∪ {∅}) × ran 𝐹)

Proof of Theorem tposssxp
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 df-tpos 7748 . . 3 tpos 𝐹 = (𝐹 ∘ (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥}))
2 cossxp 6003 . . 3 (𝐹 ∘ (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥})) ⊆ (dom (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥}) × ran 𝐹)
31, 2eqsstri 3926 . 2 tpos 𝐹 ⊆ (dom (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥}) × ran 𝐹)
4 eqid 2795 . . . 4 (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥}) = (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥})
54dmmptss 5975 . . 3 dom (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥}) ⊆ (dom 𝐹 ∪ {∅})
6 xpss1 5467 . . 3 (dom (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥}) ⊆ (dom 𝐹 ∪ {∅}) → (dom (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥}) × ran 𝐹) ⊆ ((dom 𝐹 ∪ {∅}) × ran 𝐹))
75, 6ax-mp 5 . 2 (dom (𝑥 ∈ (dom 𝐹 ∪ {∅}) ↦ {𝑥}) × ran 𝐹) ⊆ ((dom 𝐹 ∪ {∅}) × ran 𝐹)
83, 7sstri 3902 1 tpos 𝐹 ⊆ ((dom 𝐹 ∪ {∅}) × ran 𝐹)
 Colors of variables: wff setvar class Syntax hints:   ∪ cun 3861   ⊆ wss 3863  ∅c0 4215  {csn 4476  ∪ cuni 4749   ↦ cmpt 5045   × cxp 5446  ◡ccnv 5447  dom cdm 5448  ran crn 5449   ∘ ccom 5452  tpos ctpos 7747 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1777  ax-4 1791  ax-5 1888  ax-6 1947  ax-7 1992  ax-8 2083  ax-9 2091  ax-10 2112  ax-11 2126  ax-12 2141  ax-13 2344  ax-ext 2769  ax-sep 5099  ax-nul 5106  ax-pr 5226 This theorem depends on definitions:  df-bi 208  df-an 397  df-or 843  df-3an 1082  df-tru 1525  df-ex 1762  df-nf 1766  df-sb 2043  df-mo 2576  df-eu 2612  df-clab 2776  df-cleq 2788  df-clel 2863  df-nfc 2935  df-ral 3110  df-rex 3111  df-rab 3114  df-v 3439  df-dif 3866  df-un 3868  df-in 3870  df-ss 3878  df-nul 4216  df-if 4386  df-sn 4477  df-pr 4479  df-op 4483  df-br 4967  df-opab 5029  df-mpt 5046  df-xp 5454  df-rel 5455  df-cnv 5456  df-co 5457  df-dm 5458  df-rn 5459  df-res 5460  df-ima 5461  df-tpos 7748 This theorem is referenced by:  reltpos  7753  tposexg  7762  wuntpos  10007  catcoppccl  17202
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