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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 6894 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐹‘𝑦) ∈ V) | |
| 2 | fvelrnb 6939 | . . 3 ⊢ (𝐹 Fn 𝐴 → (𝑥 ∈ ran 𝐹 ↔ ∃𝑦 ∈ 𝐴 (𝐹‘𝑦) = 𝑥)) | |
| 3 | eqcom 2767 | . . . 4 ⊢ ((𝐹‘𝑦) = 𝑥 ↔ 𝑥 = (𝐹‘𝑦)) | |
| 4 | 3 | rexbii 3109 | . . 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 5375 | 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 3076 ∃wrex 3086 Vcvv 3450 ran crn 5656 Fn wfn 6528 ‘cfv 6533 |
| 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 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pr 5398 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-iota 6489 df-fun 6535 df-fn 6536 df-fv 6541 |
| This theorem is used by: ralrnmptw 7088 ralrnmpt 7090 cbvfo 7291 isoselem 7343 indexfi 9330 ordtypelem9 9501 ordtypelem10 9502 wemapwe 9679 numacn 10055 acndom 10057 rpnnen1lem3 13032 fsequb2 14043 limsuple 15568 limsupval2 15570 climsup 15760 ruclem11 16331 ruclem12 16332 prmreclem6 17016 imasaddfnlem 17617 imasvscafn 17626 cycsubgcl 19337 ghmrn 19359 ghmnsgima 19370 pgpssslw 19744 gexex 19983 dprdfcntz 20147 znf1o 21767 frlmlbs 22013 lindfrn 22037 ptcnplem 23850 kqt0lem 23965 isr0 23966 regr1lem2 23969 uzrest 24126 tmdgsum2 24325 imasf1oxmet 24604 imasf1omet 24605 bndth 25189 evth 25190 ovolficcss 25700 ovollb2lem 25719 ovolunlem1 25728 ovoliunlem1 25733 ovoliunlem2 25734 ovoliun2 25737 ovolscalem1 25744 ovolicc1 25747 voliunlem2 25782 voliunlem3 25783 ioombl1lem4 25792 uniioovol 25810 uniioombllem2 25814 uniioombllem3 25816 uniioombllem6 25819 volsup2 25836 vitalilem3 25841 mbfsup 25895 mbfinf 25896 mbflimsup 25897 itg1ge0 25917 itg1mulc 25935 itg1climres 25945 mbfi1fseqlem4 25949 itg2seq 25973 itg2monolem1 25981 itg2mono 25984 itg2i1fseq2 25987 itg2gt0 25991 itg2cnlem1 25992 itg2cn 25994 limciun 26124 plycpn 26522 hmopidmchi 32635 hmopidmpji 32636 rge0scvg 34462 mclsax 36151 mblfinlem2 38410 ismtyhmeolem 38557 nacsfix 43560 fnwe2lem2 43895 gneispace 44977 climinf 46439 liminfval2 46599 |
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