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Theorem inrresf1 7063
Description: The right injection restricted to the right class of a disjoint union is an injective function from the right class into the disjoint union. (Contributed by AV, 28-Jun-2022.)
Assertion
Ref Expression
inrresf1 (inr ↾ 𝐵):𝐵1-1→(𝐴𝐵)

Proof of Theorem inrresf1
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 djurf1or 7058 . 2 (inr ↾ 𝐵):𝐵1-1-onto→({1o} × 𝐵)
2 djurclr 7051 . 2 (𝑥𝐵 → ((inr ↾ 𝐵)‘𝑥) ∈ (𝐴𝐵))
31, 2inresflem 7061 1 (inr ↾ 𝐵):𝐵1-1→(𝐴𝐵)
Colors of variables: wff set class
Syntax hints:  cres 4630  1-1wf1 5215  1oc1o 6412  cdju 7038  inrcinr 7047
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 614  ax-in2 615  ax-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-13 2150  ax-14 2151  ax-ext 2159  ax-sep 4123  ax-nul 4131  ax-pow 4176  ax-pr 4211  ax-un 4435
This theorem depends on definitions:  df-bi 117  df-3an 980  df-tru 1356  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ral 2460  df-rex 2461  df-v 2741  df-sbc 2965  df-dif 3133  df-un 3135  df-in 3137  df-ss 3144  df-nul 3425  df-pw 3579  df-sn 3600  df-pr 3601  df-op 3603  df-uni 3812  df-br 4006  df-opab 4067  df-mpt 4068  df-tr 4104  df-id 4295  df-iord 4368  df-on 4370  df-suc 4373  df-xp 4634  df-rel 4635  df-cnv 4636  df-co 4637  df-dm 4638  df-rn 4639  df-res 4640  df-iota 5180  df-fun 5220  df-fn 5221  df-f 5222  df-f1 5223  df-fo 5224  df-f1o 5225  df-fv 5226  df-1st 6143  df-2nd 6144  df-1o 6419  df-dju 7039  df-inr 7049
This theorem is referenced by:  updjudhcoinrg  7082  updjud  7083  caserel  7088  djudom  7094  djufun  7105  djuinj  7107  djudomr  7221  exmidsbthrlem  14809
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