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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 6896 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐹‘𝑦) ∈ V) | |
| 2 | fvelrnb 6941 | . . 3 ⊢ (𝐹 Fn 𝐴 → (𝑥 ∈ ran 𝐹 ↔ ∃𝑦 ∈ 𝐴 (𝐹‘𝑦) = 𝑥)) | |
| 3 | eqcom 2770 | . . . 4 ⊢ ((𝐹‘𝑦) = 𝑥 ↔ 𝑥 = (𝐹‘𝑦)) | |
| 4 | 3 | rexbii 3112 | . . 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 486 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝑥 = (𝐹‘𝑦)) → (𝜑 ↔ 𝜓)) |
| 8 | 1, 5, 7 | ralxfr2d 5381 | 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 400 = wceq 1570 ∈ wcel 2143 ∀wral 3079 ∃wrex 3089 Vcvv 3455 ran crn 5662 Fn wfn 6531 ‘cfv 6536 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pr 5404 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-opab 5174 df-mpt 5193 df-id 5556 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-iota 6492 df-fun 6538 df-fn 6539 df-fv 6544 |
| This theorem is used by: ralrnmptw 7089 ralrnmpt 7091 cbvfo 7287 isoselem 7339 indexfi 9313 ordtypelem9 9484 ordtypelem10 9485 wemapwe 9662 numacn 10038 acndom 10040 rpnnen1lem3 13007 fsequb2 14017 limsuple 15534 limsupval2 15536 climsup 15726 ruclem11 16300 ruclem12 16301 prmreclem6 16985 imasaddfnlem 17586 imasvscafn 17595 cycsubgcl 19281 ghmrn 19303 ghmnsgima 19314 pgpssslw 19688 gexex 19927 dprdfcntz 20091 znf1o 21710 frlmlbs 21956 lindfrn 21980 ptcnplem 23787 kqt0lem 23902 isr0 23903 regr1lem2 23906 uzrest 24063 tmdgsum2 24262 imasf1oxmet 24541 imasf1omet 24542 bndth 25126 evth 25127 ovolficcss 25637 ovollb2lem 25656 ovolunlem1 25665 ovoliunlem1 25670 ovoliunlem2 25671 ovoliun2 25674 ovolscalem1 25681 ovolicc1 25684 voliunlem2 25719 voliunlem3 25720 ioombl1lem4 25729 uniioovol 25747 uniioombllem2 25751 uniioombllem3 25753 uniioombllem6 25756 volsup2 25773 vitalilem3 25778 mbfsup 25832 mbfinf 25833 mbflimsup 25834 itg1ge0 25854 itg1mulc 25872 itg1climres 25882 mbfi1fseqlem4 25886 itg2seq 25910 itg2monolem1 25918 itg2mono 25921 itg2i1fseq2 25924 itg2gt0 25928 itg2cnlem1 25929 itg2cn 25931 limciun 26062 plycpn 26459 hmopidmchi 32512 hmopidmpji 32513 rge0scvg 34348 mclsax 36069 mblfinlem2 38337 ismtyhmeolem 38483 nacsfix 43471 fnwe2lem2 43806 gneispace 44888 climinf 46350 liminfval2 46510 |
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