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Mirrors > Home > MPE Home > Th. List > inrresf | Structured version Visualization version GIF version |
Description: The right injection restricted to the right class of a disjoint union is a function from the right class into the disjoint union. (Contributed by AV, 27-Jun-2022.) |
Ref | Expression |
---|---|
inrresf | β’ (inr βΎ π΅):π΅βΆ(π΄ β π΅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | djurf1o 9908 | . . 3 β’ inr:Vβ1-1-ontoβ({1o} Γ V) | |
2 | f1ofun 6836 | . . 3 β’ (inr:Vβ1-1-ontoβ({1o} Γ V) β Fun inr) | |
3 | ffvresb 7124 | . . 3 β’ (Fun inr β ((inr βΎ π΅):π΅βΆ(π΄ β π΅) β βπ₯ β π΅ (π₯ β dom inr β§ (inrβπ₯) β (π΄ β π΅)))) | |
4 | 1, 2, 3 | mp2b 10 | . 2 β’ ((inr βΎ π΅):π΅βΆ(π΄ β π΅) β βπ₯ β π΅ (π₯ β dom inr β§ (inrβπ₯) β (π΄ β π΅))) |
5 | elex 3493 | . . . 4 β’ (π₯ β π΅ β π₯ β V) | |
6 | opex 5465 | . . . . 5 β’ β¨1o, π₯β© β V | |
7 | df-inr 9898 | . . . . 5 β’ inr = (π₯ β V β¦ β¨1o, π₯β©) | |
8 | 6, 7 | dmmpti 6695 | . . . 4 β’ dom inr = V |
9 | 5, 8 | eleqtrrdi 2845 | . . 3 β’ (π₯ β π΅ β π₯ β dom inr) |
10 | djurcl 9906 | . . 3 β’ (π₯ β π΅ β (inrβπ₯) β (π΄ β π΅)) | |
11 | 9, 10 | jca 513 | . 2 β’ (π₯ β π΅ β (π₯ β dom inr β§ (inrβπ₯) β (π΄ β π΅))) |
12 | 4, 11 | mprgbir 3069 | 1 β’ (inr βΎ π΅):π΅βΆ(π΄ β π΅) |
Colors of variables: wff setvar class |
Syntax hints: β wb 205 β§ wa 397 β wcel 2107 βwral 3062 Vcvv 3475 {csn 4629 β¨cop 4635 Γ cxp 5675 dom cdm 5677 βΎ cres 5679 Fun wfun 6538 βΆwf 6540 β1-1-ontoβwf1o 6543 βcfv 6544 1oc1o 8459 β cdju 9893 inrcinr 9895 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-sep 5300 ax-nul 5307 ax-pr 5428 ax-un 7725 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-ral 3063 df-rex 3072 df-rab 3434 df-v 3477 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4910 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-om 7856 df-1st 7975 df-2nd 7976 df-1o 8466 df-dju 9896 df-inr 9898 |
This theorem is referenced by: inrresf1 9912 updjudhcoinrg 9928 updjud 9929 |
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