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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 ↾ 𝐵):𝐵–1-1→(𝐴 ⊔ 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | djurf1o 9880 | . . 3 ⊢ inr:V–1-1-onto→({1o} × V) | |
2 | f1of1 6810 | . . 3 ⊢ (inr:V–1-1-onto→({1o} × V) → inr:V–1-1→({1o} × V)) | |
3 | 1, 2 | ax-mp 5 | . 2 ⊢ inr:V–1-1→({1o} × V) |
4 | ssv 3993 | . 2 ⊢ 𝐵 ⊆ V | |
5 | inrresf 9883 | . 2 ⊢ (inr ↾ 𝐵):𝐵⟶(𝐴 ⊔ 𝐵) | |
6 | f1resf1 6774 | . 2 ⊢ ((inr:V–1-1→({1o} × V) ∧ 𝐵 ⊆ V ∧ (inr ↾ 𝐵):𝐵⟶(𝐴 ⊔ 𝐵)) → (inr ↾ 𝐵):𝐵–1-1→(𝐴 ⊔ 𝐵)) | |
7 | 3, 4, 5, 6 | mp3an 1461 | 1 ⊢ (inr ↾ 𝐵):𝐵–1-1→(𝐴 ⊔ 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: Vcvv 3466 ⊆ wss 3935 {csn 4613 × cxp 5658 ↾ cres 5662 ⟶wf 6519 –1-1→wf1 6520 –1-1-onto→wf1o 6522 1oc1o 8432 ⊔ cdju 9865 inrcinr 9867 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2702 ax-sep 5283 ax-nul 5290 ax-pr 5411 ax-un 7699 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 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 3426 df-v 3468 df-dif 3938 df-un 3940 df-in 3942 df-ss 3952 df-pss 3954 df-nul 4310 df-if 4514 df-pw 4589 df-sn 4614 df-pr 4616 df-op 4620 df-uni 4893 df-br 5133 df-opab 5195 df-mpt 5216 df-tr 5250 df-id 5558 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5615 df-we 5617 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ord 6347 df-on 6348 df-lim 6349 df-suc 6350 df-iota 6475 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-om 7830 df-1st 7948 df-2nd 7949 df-1o 8439 df-dju 9868 df-inr 9870 |
This theorem is referenced by: (None) |
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