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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 6911 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐹‘𝑦) ∈ V) | |
| 2 | fvelrnb 6956 | . . 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 3113 | . . 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 5376 | 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 1569 ∈ wcel 2146 ∀wral 3080 ∃wrex 3090 Vcvv 3454 ran crn 5656 Fn wfn 6542 ‘cfv 6547 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pr 5395 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-iota 6501 df-fun 6549 df-fn 6550 df-fv 6555 |
| This theorem is used by: ralrnmptw 7105 ralrnmpt 7107 cbvfo 7307 isoselem 7359 fnwe2lem3 8160 indexfi 9363 ordtypelem9 9533 ordtypelem10 9534 wemapwe 9711 numacn 10141 acndom 10143 rpnnen1lem3 13120 fsequb2 14132 limsuple 15660 limsupval2 15662 climsup 15852 ruclem11 16423 ruclem12 16424 prmreclem6 17114 imasaddfnlem 17715 imasvscafn 17724 cycsubgcl 19436 ghmrn 19458 ghmnsgima 19469 pgpssslw 19843 gexex 20082 dprdfcntz 20246 znf1o 21872 frlmlbs 22118 lindfrn 22142 ptcnplem 23955 kqt0lem 24070 isr0 24071 regr1lem2 24074 uzrest 24231 tmdgsum2 24430 imasf1oxmet 24709 imasf1omet 24710 bndth 25294 evth 25295 ovolficcss 25805 ovollb2lem 25824 ovolunlem1 25833 ovoliunlem1 25838 ovoliunlem2 25839 ovoliun2 25842 ovolscalem1 25849 ovolicc1 25852 voliunlem2 25887 voliunlem3 25888 ioombl1lem4 25897 uniioovol 25915 uniioombllem2 25919 uniioombllem3 25921 uniioombllem6 25924 volsup2 25941 vitalilem3 25946 mbfsup 26000 mbfinf 26001 mbflimsup 26002 itg1ge0 26022 itg1mulc 26040 itg1climres 26050 mbfi1fseqlem4 26054 itg2seq 26078 itg2monolem1 26086 itg2mono 26089 itg2i1fseq2 26092 itg2gt0 26096 itg2cnlem1 26097 itg2cn 26099 limciun 26229 plycpn 26625 hmopidmchi 32768 hmopidmpji 32769 rge0scvg 34637 mclsax 36458 mblfinlem2 38722 ismtyhmeolem 38884 nacsfix 43869 gneispace 45280 climinf 46763 liminfval2 46923 |
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