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Mirrors > Home > MPE Home > Th. List > inrresf1 | Structured version Visualization version GIF version |
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.) |
Ref | Expression |
---|---|
inrresf1 | ⢠(inr ā¾ šµ):šµā1-1ā(š“ ā šµ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | djurf1o 9911 | . . 3 ⢠inr:Vā1-1-ontoā({1o} Ć V) | |
2 | f1of1 6832 | . . 3 ⢠(inr:Vā1-1-ontoā({1o} Ć V) ā inr:Vā1-1ā({1o} Ć V)) | |
3 | 1, 2 | ax-mp 5 | . 2 ⢠inr:Vā1-1ā({1o} Ć V) |
4 | ssv 4006 | . 2 ⢠šµ ā V | |
5 | inrresf 9914 | . 2 ⢠(inr ā¾ šµ):šµā¶(š“ ā šµ) | |
6 | f1resf1 6796 | . 2 ⢠((inr:Vā1-1ā({1o} Ć V) ā§ šµ ā V ā§ (inr ā¾ šµ):šµā¶(š“ ā šµ)) ā (inr ā¾ šµ):šµā1-1ā(š“ ā šµ)) | |
7 | 3, 4, 5, 6 | mp3an 1460 | 1 ⢠(inr ā¾ šµ):šµā1-1ā(š“ ā šµ) |
Colors of variables: wff setvar class |
Syntax hints: Vcvv 3473 ā wss 3948 {csn 4628 Ć cxp 5674 ā¾ cres 5678 ā¶wf 6539 ā1-1āwf1 6540 ā1-1-ontoāwf1o 6542 1oc1o 8462 ā cdju 9896 inrcinr 9898 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-sep 5299 ax-nul 5306 ax-pr 5427 ax-un 7728 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-ral 3061 df-rex 3070 df-rab 3432 df-v 3475 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-om 7859 df-1st 7978 df-2nd 7979 df-1o 8469 df-dju 9899 df-inr 9901 |
This theorem is referenced by: (None) |
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