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Theorem disjALTVid 39787
Description: The class of identity relations is disjoint. (Contributed by Peter Mazsa, 20-Jun-2021.)
Assertion
Ref Expression
disjALTVid Disj I

Proof of Theorem disjALTVid
StepHypRef Expression
1 cosscnvid 39503 . . 3 ≀ ◡ I = I
21eqimssi 3991 . 2 ≀ ◡ I ⊆ I
3 reli 5804 . 2 Rel I
4 dfdisjALTV2 39731 . 2 ( Disj I ↔ ( ≀ ◡ I ⊆ I ∧ Rel I ))
52, 3, 4mpbir2an 724 1 Disj I
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ⊆ wss 3899   I cid 5545  ◡ccnv 5650  Rel wrel 5656   ≀ ccoss 39115   Disj wdisjALTV 39151
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-11 2194  ax-ext 2733  ax-sep 5249  ax-pr 5391
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2740  df-cleq 2753  df-clel 2836  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-br 5104  df-opab 5168  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-coss 39433  df-cnvrefrel 39539  df-disjALTV 39722
This theorem is used by:  disjALTVidres  39788  disjALTVinidres  39789  disjALTVxrnidres  39790  eqvrelid  39824  detid  39828  eqvrelcossid  39829  petid2  39851
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