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Theorem trclfvg 14826
Description: The value of the transitive closure of a relation is a superset or (for proper classes) the empty set. (Contributed by RP, 8-May-2020.)
Assertion
Ref Expression
trclfvg (𝑅 ⊆ (t+‘𝑅) ∨ (t+‘𝑅) = ∅)

Proof of Theorem trclfvg
StepHypRef Expression
1 exmid 893 . 2 (𝑅 ∈ V ∨ ¬ 𝑅 ∈ V)
2 trclfvlb 14819 . . 3 (𝑅 ∈ V → 𝑅 ⊆ (t+‘𝑅))
3 fvprc 6822 . . 3 𝑅 ∈ V → (t+‘𝑅) = ∅)
42, 3orim12i 907 . 2 ((𝑅 ∈ V ∨ ¬ 𝑅 ∈ V) → (𝑅 ⊆ (t+‘𝑅) ∨ (t+‘𝑅) = ∅))
51, 4ax-mp 5 1 (𝑅 ⊆ (t+‘𝑅) ∨ (t+‘𝑅) = ∅)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wo 845   = wceq 1541  wcel 2106  Vcvv 3442  wss 3902  c0 4274  cfv 6484  t+ctcl 14796
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2708  ax-sep 5248  ax-nul 5255  ax-pow 5313  ax-pr 5377  ax-un 7655
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 846  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-nf 1786  df-sb 2068  df-mo 2539  df-eu 2568  df-clab 2715  df-cleq 2729  df-clel 2815  df-nfc 2887  df-ne 2942  df-ral 3063  df-rex 3072  df-rab 3405  df-v 3444  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4275  df-if 4479  df-pw 4554  df-sn 4579  df-pr 4581  df-op 4585  df-uni 4858  df-int 4900  df-br 5098  df-opab 5160  df-mpt 5181  df-id 5523  df-xp 5631  df-rel 5632  df-cnv 5633  df-co 5634  df-dm 5635  df-rn 5636  df-res 5637  df-iota 6436  df-fun 6486  df-fv 6492  df-trcl 14798
This theorem is referenced by: (None)
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