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Theorem inrresf1 6940
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 ) : B -1-1-> ( A B )

Proof of Theorem inrresf1
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 djurf1or 6935 . 2  |-  (inr  |`  B ) : B -1-1-onto-> ( { 1o }  X.  B )
2 djurclr 6928 . 2  |-  ( x  e.  B  ->  (
(inr  |`  B ) `  x )  e.  ( A B ) )
31, 2inresflem 6938 1  |-  (inr  |`  B ) : B -1-1-> ( A B )
Colors of variables: wff set class
Syntax hints:    |` cres 4536   -1-1->wf1 5115   1oc1o 6299   ⊔ cdju 6915  inrcinr 6924
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 603  ax-in2 604  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-13 1491  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2119  ax-sep 4041  ax-nul 4049  ax-pow 4093  ax-pr 4126  ax-un 4350
This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-nf 1437  df-sb 1736  df-eu 2000  df-mo 2001  df-clab 2124  df-cleq 2130  df-clel 2133  df-nfc 2268  df-ral 2419  df-rex 2420  df-v 2683  df-sbc 2905  df-dif 3068  df-un 3070  df-in 3072  df-ss 3079  df-nul 3359  df-pw 3507  df-sn 3528  df-pr 3529  df-op 3531  df-uni 3732  df-br 3925  df-opab 3985  df-mpt 3986  df-tr 4022  df-id 4210  df-iord 4283  df-on 4285  df-suc 4288  df-xp 4540  df-rel 4541  df-cnv 4542  df-co 4543  df-dm 4544  df-rn 4545  df-res 4546  df-iota 5083  df-fun 5120  df-fn 5121  df-f 5122  df-f1 5123  df-fo 5124  df-f1o 5125  df-fv 5126  df-1st 6031  df-2nd 6032  df-1o 6306  df-dju 6916  df-inr 6926
This theorem is referenced by:  updjudhcoinrg  6959  updjud  6960  caserel  6965  djudom  6971  djufun  6982  djuinj  6984  djudomr  7069  exmidsbthrlem  13206
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