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Theorem trclfvlb3 15033
Description: The transitive closure of a relation has a lower bound. (Contributed by RP, 8-May-2020.)
Assertion
Ref Expression
trclfvlb3 (𝑅𝑉 → (𝑅 ∪ (𝑅𝑅)) ⊆ (t+‘𝑅))

Proof of Theorem trclfvlb3
StepHypRef Expression
1 trclfvlb 15030 . 2 (𝑅𝑉𝑅 ⊆ (t+‘𝑅))
2 trclfvlb2 15032 . 2 (𝑅𝑉 → (𝑅𝑅) ⊆ (t+‘𝑅))
31, 2unssd 4174 1 (𝑅𝑉 → (𝑅 ∪ (𝑅𝑅)) ⊆ (t+‘𝑅))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2107  cun 3931  wss 3933  ccom 5671  cfv 6542  t+ctcl 15007
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1794  ax-4 1808  ax-5 1909  ax-6 1966  ax-7 2006  ax-8 2109  ax-9 2117  ax-10 2140  ax-11 2156  ax-12 2176  ax-ext 2706  ax-sep 5278  ax-nul 5288  ax-pow 5347  ax-pr 5414  ax-un 7738
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1779  df-nf 1783  df-sb 2064  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2726  df-clel 2808  df-nfc 2884  df-ne 2932  df-ral 3051  df-rex 3060  df-rab 3421  df-v 3466  df-dif 3936  df-un 3938  df-in 3940  df-ss 3950  df-nul 4316  df-if 4508  df-pw 4584  df-sn 4609  df-pr 4611  df-op 4615  df-uni 4890  df-int 4929  df-br 5126  df-opab 5188  df-mpt 5208  df-id 5560  df-xp 5673  df-rel 5674  df-cnv 5675  df-co 5676  df-dm 5677  df-rn 5678  df-res 5679  df-iota 6495  df-fun 6544  df-fv 6550  df-trcl 15009
This theorem is referenced by: (None)
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