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Mirrors > Home > MPE Home > Th. List > fvmptg | Structured version Visualization version GIF version |
Description: Value of a function given in maps-to notation. (Contributed by NM, 2-Oct-2007.) (Revised by Mario Carneiro, 31-Aug-2015.) |
Ref | Expression |
---|---|
fvmptg.1 | ⊢ (𝑥 = 𝐴 → 𝐵 = 𝐶) |
fvmptg.2 | ⊢ 𝐹 = (𝑥 ∈ 𝐷 ↦ 𝐵) |
Ref | Expression |
---|---|
fvmptg | ⊢ ((𝐴 ∈ 𝐷 ∧ 𝐶 ∈ 𝑅) → (𝐹‘𝐴) = 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2821 | . 2 ⊢ 𝐶 = 𝐶 | |
2 | fvmptg.1 | . . . 4 ⊢ (𝑥 = 𝐴 → 𝐵 = 𝐶) | |
3 | 2 | eqeq2d 2832 | . . 3 ⊢ (𝑥 = 𝐴 → (𝑦 = 𝐵 ↔ 𝑦 = 𝐶)) |
4 | eqeq1 2825 | . . 3 ⊢ (𝑦 = 𝐶 → (𝑦 = 𝐶 ↔ 𝐶 = 𝐶)) | |
5 | moeq 3698 | . . . 4 ⊢ ∃*𝑦 𝑦 = 𝐵 | |
6 | 5 | a1i 11 | . . 3 ⊢ (𝑥 ∈ 𝐷 → ∃*𝑦 𝑦 = 𝐵) |
7 | fvmptg.2 | . . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝐷 ↦ 𝐵) | |
8 | df-mpt 5147 | . . . 4 ⊢ (𝑥 ∈ 𝐷 ↦ 𝐵) = {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝐷 ∧ 𝑦 = 𝐵)} | |
9 | 7, 8 | eqtri 2844 | . . 3 ⊢ 𝐹 = {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝐷 ∧ 𝑦 = 𝐵)} |
10 | 3, 4, 6, 9 | fvopab3ig 6764 | . 2 ⊢ ((𝐴 ∈ 𝐷 ∧ 𝐶 ∈ 𝑅) → (𝐶 = 𝐶 → (𝐹‘𝐴) = 𝐶)) |
11 | 1, 10 | mpi 20 | 1 ⊢ ((𝐴 ∈ 𝐷 ∧ 𝐶 ∈ 𝑅) → (𝐹‘𝐴) = 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1537 ∈ wcel 2114 ∃*wmo 2620 {copab 5128 ↦ cmpt 5146 ‘cfv 6355 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-iota 6314 df-fun 6357 df-fv 6363 |
This theorem is referenced by: fvmpti 6767 fvmpt 6768 fvmpt2f 6769 fvtresfn 6770 fvmpts 6771 fvmpt3 6772 fvmptd3 6791 fvmptss2 6793 f1mpt 7019 bropfvvvv 7787 tz7.44-3 8044 pw2f1olem 8621 wdom2d 9044 tz9.12lem3 9218 djurcl 9340 djur 9348 djuun 9355 cardval3 9381 cfval 9669 coftr 9695 fin1a2lem1 9822 fin1a2lem12 9833 axdc2lem 9870 pwcfsdom 10005 tskmval 10261 lsw 13916 swrdswrd 14067 trclfv 14360 relexpsucnnr 14384 dfrtrclrec2 14416 rtrclreclem1 14417 summolem2a 15072 prodmolem2a 15288 divsfval 16820 joinfval 17611 meetfval 17625 symgextfv 18546 symgextfve 18547 pmtrdifwrdel2lem1 18612 efgtf 18848 rrgsupp 20064 ply1sclid 20456 uvcvval 20930 submaval0 21189 m2detleiblem3 21238 m2detleiblem4 21239 maduval 21247 minmar1val0 21256 toponsspwpw 21530 cldval 21631 ntrfval 21632 clsfval 21633 opncldf3 21694 neifval 21707 lpfval 21746 islocfin 22125 kqfval 22331 stdbdxmet 23125 cmetcaulem 23891 bcth3 23934 itg2gt0 24361 ellimc2 24475 coe1termlem 24848 clwlkclwwlkfo 27787 grpoinvfval 28299 grpodivfval 28311 nlfnval 29658 sigaval 31370 measval 31457 measdivcst 31483 measdivcstALTV 31484 probfinmeasbALTV 31687 ptpconn 32480 cvmsval 32513 ex-sategoelel12 32674 bdayval 33155 imageval 33391 fvimage 33392 tailfval 33720 tailval 33721 curfv 34887 heiborlem4 35107 lkrval 36239 cdleme31fv 37541 docavalN 38274 dochval 38502 mapdval 38779 hvmapval 38911 hvmapvalvalN 38912 hdmap1vallem 38948 hdmapval 38979 hgmapval 39038 mzpval 39378 mzpsubst 39394 pw2f1o2val 39685 refsum2cnlem1 41343 stoweidlem26 42360 stirlinglem8 42415 fourierdlem50 42490 caragenval 42824 fargshiftfv 43648 lincvalsc0 44525 linc0scn0 44527 linc1 44529 lincscm 44534 |
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