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Theorem relexp0d 14587
Description: A relation composed zero times is the (restricted) identity. (Contributed by Drahflow, 12-Nov-2015.) (Revised by RP, 30-May-2020.) (Revised by AV, 12-Jul-2024.)
Hypotheses
Ref Expression
relexp0d.1 (𝜑 → Rel 𝑅)
relexp0d.2 (𝜑𝑅𝑉)
Assertion
Ref Expression
relexp0d (𝜑 → (𝑅𝑟0) = ( I ↾ 𝑅))

Proof of Theorem relexp0d
StepHypRef Expression
1 relexp0d.2 . 2 (𝜑𝑅𝑉)
2 relexp0d.1 . 2 (𝜑 → Rel 𝑅)
3 relexp0 14586 . 2 ((𝑅𝑉 ∧ Rel 𝑅) → (𝑅𝑟0) = ( I ↾ 𝑅))
41, 2, 3syl2anc 587 1 (𝜑 → (𝑅𝑟0) = ( I ↾ 𝑅))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1543  wcel 2110   cuni 4819   I cid 5454  cres 5553  Rel wrel 5556  (class class class)co 7213  0cc0 10729  𝑟crelexp 14582
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2016  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2158  ax-12 2175  ax-ext 2708  ax-sep 5192  ax-nul 5199  ax-pow 5258  ax-pr 5322  ax-un 7523  ax-1cn 10787  ax-icn 10788  ax-addcl 10789  ax-mulcl 10791  ax-i2m1 10797
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2071  df-mo 2539  df-eu 2568  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2886  df-ral 3066  df-rex 3067  df-rab 3070  df-v 3410  df-sbc 3695  df-dif 3869  df-un 3871  df-in 3873  df-ss 3883  df-nul 4238  df-if 4440  df-pw 4515  df-sn 4542  df-pr 4544  df-op 4548  df-uni 4820  df-br 5054  df-opab 5116  df-id 5455  df-xp 5557  df-rel 5558  df-cnv 5559  df-co 5560  df-dm 5561  df-rn 5562  df-res 5563  df-iota 6338  df-fun 6382  df-fv 6388  df-ov 7216  df-oprab 7217  df-mpo 7218  df-n0 12091  df-relexp 14583
This theorem is referenced by:  rtrclreclem2  14622  rtrclreclem4  14624
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