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Theorem trclfvlb3 14968
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 14965 . 2 (𝑅𝑉𝑅 ⊆ (t+‘𝑅))
2 trclfvlb2 14967 . 2 (𝑅𝑉 → (𝑅𝑅) ⊆ (t+‘𝑅))
31, 2unssd 4133 1 (𝑅𝑉 → (𝑅 ∪ (𝑅𝑅)) ⊆ (t+‘𝑅))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2114  cun 3888  wss 3890  ccom 5630  cfv 6494  t+ctcl 14942
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 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5232  ax-pow 5304  ax-pr 5372  ax-un 7684
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rab 3391  df-v 3432  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-pw 4544  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-int 4891  df-br 5087  df-opab 5149  df-mpt 5168  df-id 5521  df-xp 5632  df-rel 5633  df-cnv 5634  df-co 5635  df-dm 5636  df-rn 5637  df-res 5638  df-iota 6450  df-fun 6496  df-fv 6502  df-trcl 14944
This theorem is referenced by: (None)
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