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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 6900 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐹‘𝑦) ∈ V) | |
| 2 | fvelrnb 6945 | . . 3 ⊢ (𝐹 Fn 𝐴 → (𝑥 ∈ ran 𝐹 ↔ ∃𝑦 ∈ 𝐴 (𝐹‘𝑦) = 𝑥)) | |
| 3 | eqcom 2772 | . . . 4 ⊢ ((𝐹‘𝑦) = 𝑥 ↔ 𝑥 = (𝐹‘𝑦)) | |
| 4 | 3 | rexbii 3114 | . . 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 5383 | 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 2146 ∀wral 3081 ∃wrex 3091 Vcvv 3457 ran crn 5664 Fn wfn 6535 ‘cfv 6540 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pr 5406 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-iota 6496 df-fun 6542 df-fn 6543 df-fv 6548 |
| This theorem is used by: ralrnmptw 7093 ralrnmpt 7095 cbvfo 7296 isoselem 7348 indexfi 9324 ordtypelem9 9495 ordtypelem10 9496 wemapwe 9673 numacn 10049 acndom 10051 rpnnen1lem3 13023 fsequb2 14034 limsuple 15557 limsupval2 15559 climsup 15749 ruclem11 16322 ruclem12 16323 prmreclem6 17007 imasaddfnlem 17608 imasvscafn 17617 cycsubgcl 19325 ghmrn 19347 ghmnsgima 19358 pgpssslw 19732 gexex 19971 dprdfcntz 20135 znf1o 21755 frlmlbs 22001 lindfrn 22025 ptcnplem 23833 kqt0lem 23948 isr0 23949 regr1lem2 23952 uzrest 24109 tmdgsum2 24308 imasf1oxmet 24587 imasf1omet 24588 bndth 25172 evth 25173 ovolficcss 25683 ovollb2lem 25702 ovolunlem1 25711 ovoliunlem1 25716 ovoliunlem2 25717 ovoliun2 25720 ovolscalem1 25727 ovolicc1 25730 voliunlem2 25765 voliunlem3 25766 ioombl1lem4 25775 uniioovol 25793 uniioombllem2 25797 uniioombllem3 25799 uniioombllem6 25802 volsup2 25819 vitalilem3 25824 mbfsup 25878 mbfinf 25879 mbflimsup 25880 itg1ge0 25900 itg1mulc 25918 itg1climres 25928 mbfi1fseqlem4 25932 itg2seq 25956 itg2monolem1 25964 itg2mono 25967 itg2i1fseq2 25970 itg2gt0 25974 itg2cnlem1 25975 itg2cn 25977 limciun 26108 plycpn 26505 hmopidmchi 32578 hmopidmpji 32579 rge0scvg 34407 mclsax 36102 mblfinlem2 38370 ismtyhmeolem 38517 nacsfix 43520 fnwe2lem2 43855 gneispace 44937 climinf 46399 liminfval2 46559 |
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