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| Mirrors > Home > MPE Home > Th. List > ralrn | Structured version Visualization version GIF version | ||
| Description: Restricted universal quantification over the range of a function. (Contributed by Mario Carneiro, 24-Dec-2013.) (Revised by Mario Carneiro, 20-Aug-2014.) |
| Ref | Expression |
|---|---|
| rexrn.1 | ⊢ (𝑥 = (𝐹‘𝑦) → (𝜑 ↔ 𝜓)) |
| Ref | Expression |
|---|---|
| ralrn | ⊢ (𝐹 Fn 𝐴 → (∀𝑥 ∈ ran 𝐹𝜑 ↔ ∀𝑦 ∈ 𝐴 𝜓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvexd 6897 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐹‘𝑦) ∈ V) | |
| 2 | fvelrnb 6942 | . . 3 ⊢ (𝐹 Fn 𝐴 → (𝑥 ∈ ran 𝐹 ↔ ∃𝑦 ∈ 𝐴 (𝐹‘𝑦) = 𝑥)) | |
| 3 | eqcom 2769 | . . . 4 ⊢ ((𝐹‘𝑦) = 𝑥 ↔ 𝑥 = (𝐹‘𝑦)) | |
| 4 | 3 | rexbii 3111 | . . 3 ⊢ (∃𝑦 ∈ 𝐴 (𝐹‘𝑦) = 𝑥 ↔ ∃𝑦 ∈ 𝐴 𝑥 = (𝐹‘𝑦)) |
| 5 | 2, 4 | bitrdi 290 | . 2 ⊢ (𝐹 Fn 𝐴 → (𝑥 ∈ ran 𝐹 ↔ ∃𝑦 ∈ 𝐴 𝑥 = (𝐹‘𝑦))) |
| 6 | rexrn.1 | . . 3 ⊢ (𝑥 = (𝐹‘𝑦) → (𝜑 ↔ 𝜓)) | |
| 7 | 6 | adantl 487 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝑥 = (𝐹‘𝑦)) → (𝜑 ↔ 𝜓)) |
| 8 | 1, 5, 7 | ralxfr2d 5379 | 1 ⊢ (𝐹 Fn 𝐴 → (∀𝑥 ∈ ran 𝐹𝜑 ↔ ∀𝑦 ∈ 𝐴 𝜓)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ∀wral 3078 ∃wrex 3088 Vcvv 3453 ran crn 5660 Fn wfn 6532 ‘cfv 6537 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pr 5402 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-iota 6493 df-fun 6539 df-fn 6540 df-fv 6545 |
| This theorem is used by: ralrnmptw 7091 ralrnmpt 7093 cbvfo 7294 isoselem 7346 indexfi 9331 ordtypelem9 9502 ordtypelem10 9503 wemapwe 9680 numacn 10056 acndom 10058 rpnnen1lem3 13033 fsequb2 14044 limsuple 15569 limsupval2 15571 climsup 15761 ruclem11 16334 ruclem12 16335 prmreclem6 17019 imasaddfnlem 17620 imasvscafn 17629 cycsubgcl 19340 ghmrn 19362 ghmnsgima 19373 pgpssslw 19747 gexex 19986 dprdfcntz 20150 znf1o 21770 frlmlbs 22016 lindfrn 22040 ptcnplem 23853 kqt0lem 23968 isr0 23969 regr1lem2 23972 uzrest 24129 tmdgsum2 24328 imasf1oxmet 24607 imasf1omet 24608 bndth 25192 evth 25193 ovolficcss 25703 ovollb2lem 25722 ovolunlem1 25731 ovoliunlem1 25736 ovoliunlem2 25737 ovoliun2 25740 ovolscalem1 25747 ovolicc1 25750 voliunlem2 25785 voliunlem3 25786 ioombl1lem4 25795 uniioovol 25813 uniioombllem2 25817 uniioombllem3 25819 uniioombllem6 25822 volsup2 25839 vitalilem3 25844 mbfsup 25898 mbfinf 25899 mbflimsup 25900 itg1ge0 25920 itg1mulc 25938 itg1climres 25948 mbfi1fseqlem4 25952 itg2seq 25976 itg2monolem1 25984 itg2mono 25987 itg2i1fseq2 25990 itg2gt0 25994 itg2cnlem1 25995 itg2cn 25997 limciun 26128 plycpn 26526 hmopidmchi 32640 hmopidmpji 32641 rge0scvg 34467 mclsax 36156 mblfinlem2 38415 ismtyhmeolem 38562 nacsfix 43565 fnwe2lem2 43900 gneispace 44982 climinf 46444 liminfval2 46604 |
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