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Mirrors > Home > MPE Home > Th. List > fmpt | Structured version Visualization version GIF version |
Description: Functionality of the mapping operation. (Contributed by Mario Carneiro, 26-Jul-2013.) (Revised by Mario Carneiro, 31-Aug-2015.) |
Ref | Expression |
---|---|
fmpt.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶) |
Ref | Expression |
---|---|
fmpt | ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 ↔ 𝐹:𝐴⟶𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fmpt.1 | . . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶) | |
2 | 1 | fnmpt 6488 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 → 𝐹 Fn 𝐴) |
3 | 1 | rnmpt 5827 | . . . 4 ⊢ ran 𝐹 = {𝑦 ∣ ∃𝑥 ∈ 𝐴 𝑦 = 𝐶} |
4 | r19.29 3254 | . . . . . . 7 ⊢ ((∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 ∧ ∃𝑥 ∈ 𝐴 𝑦 = 𝐶) → ∃𝑥 ∈ 𝐴 (𝐶 ∈ 𝐵 ∧ 𝑦 = 𝐶)) | |
5 | eleq1 2900 | . . . . . . . . 9 ⊢ (𝑦 = 𝐶 → (𝑦 ∈ 𝐵 ↔ 𝐶 ∈ 𝐵)) | |
6 | 5 | biimparc 482 | . . . . . . . 8 ⊢ ((𝐶 ∈ 𝐵 ∧ 𝑦 = 𝐶) → 𝑦 ∈ 𝐵) |
7 | 6 | rexlimivw 3282 | . . . . . . 7 ⊢ (∃𝑥 ∈ 𝐴 (𝐶 ∈ 𝐵 ∧ 𝑦 = 𝐶) → 𝑦 ∈ 𝐵) |
8 | 4, 7 | syl 17 | . . . . . 6 ⊢ ((∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 ∧ ∃𝑥 ∈ 𝐴 𝑦 = 𝐶) → 𝑦 ∈ 𝐵) |
9 | 8 | ex 415 | . . . . 5 ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 → (∃𝑥 ∈ 𝐴 𝑦 = 𝐶 → 𝑦 ∈ 𝐵)) |
10 | 9 | abssdv 4045 | . . . 4 ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 → {𝑦 ∣ ∃𝑥 ∈ 𝐴 𝑦 = 𝐶} ⊆ 𝐵) |
11 | 3, 10 | eqsstrid 4015 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 → ran 𝐹 ⊆ 𝐵) |
12 | df-f 6359 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) | |
13 | 2, 11, 12 | sylanbrc 585 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 → 𝐹:𝐴⟶𝐵) |
14 | 1 | mptpreima 6092 | . . . 4 ⊢ (◡𝐹 “ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐶 ∈ 𝐵} |
15 | fimacnv 6839 | . . . 4 ⊢ (𝐹:𝐴⟶𝐵 → (◡𝐹 “ 𝐵) = 𝐴) | |
16 | 14, 15 | syl5reqr 2871 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐶 ∈ 𝐵}) |
17 | rabid2 3381 | . . 3 ⊢ (𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐶 ∈ 𝐵} ↔ ∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵) | |
18 | 16, 17 | sylib 220 | . 2 ⊢ (𝐹:𝐴⟶𝐵 → ∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵) |
19 | 13, 18 | impbii 211 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 ↔ 𝐹:𝐴⟶𝐵) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 208 ∧ wa 398 = wceq 1537 ∈ wcel 2114 {cab 2799 ∀wral 3138 ∃wrex 3139 {crab 3142 ⊆ wss 3936 ↦ cmpt 5146 ◡ccnv 5554 ran crn 5556 “ cima 5558 Fn wfn 6350 ⟶wf 6351 |
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-ne 3017 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-rn 5566 df-res 5567 df-ima 5568 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-fv 6363 |
This theorem is referenced by: f1ompt 6875 fmpti 6876 fvmptelrn 6877 fmptd 6878 fmptdf 6881 rnmptss 6886 f1oresrab 6889 idref 6908 f1mpt 7019 f1stres 7713 f2ndres 7714 fmpox 7765 fmpoco 7790 onoviun 7980 onnseq 7981 mptelixpg 8499 dom2lem 8549 iinfi 8881 cantnfrescl 9139 acni2 9472 acnlem 9474 dfac4 9548 dfacacn 9567 fin23lem28 9762 axdc2lem 9870 axcclem 9879 ac6num 9901 uzf 12247 ccatalpha 13947 repsf 14135 rlim2 14853 rlimi 14870 o1fsum 15168 ackbijnn 15183 pcmptcl 16227 vdwlem11 16327 ismon2 17004 isepi2 17011 yonedalem3b 17529 smndex1gbas 18067 efgsf 18855 gsummhm2 19059 gsummptcl 19087 gsummptfif1o 19088 gsummptfzcl 19089 gsumcom2 19095 gsummptnn0fz 19106 issrngd 19632 subrgasclcl 20279 evl1sca 20497 ipcl 20777 mavmulcl 21156 m2detleiblem3 21238 m2detleiblem4 21239 iinopn 21510 ordtrest2 21812 iscnp2 21847 discmp 22006 2ndcdisj 22064 ptunimpt 22203 pttopon 22204 ptcnplem 22229 upxp 22231 txdis1cn 22243 cnmpt11 22271 cnmpt21 22279 cnmptkp 22288 cnmptk1 22289 cnmpt1k 22290 cnmptkk 22291 cnmptk1p 22293 qtopeu 22324 uzrest 22505 txflf 22614 clsnsg 22718 tgpconncomp 22721 tsmsf1o 22753 prdsmet 22980 fsumcn 23478 cncfmpt1f 23521 iccpnfcnv 23548 lebnumlem1 23565 copco 23622 pcoass 23628 bcth3 23934 voliun 24155 i1f1lem 24290 iblcnlem 24389 limcvallem 24469 ellimc2 24475 cnmptlimc 24488 dvle 24604 dvfsumle 24618 dvfsumge 24619 dvfsumabs 24620 dvfsumlem2 24624 itgsubstlem 24645 sincn 25032 coscn 25033 rlimcxp 25551 harmonicbnd 25581 harmonicbnd2 25582 lgamgulmlem6 25611 sqff1o 25759 lgseisenlem3 25953 fmptdF 30401 ordtrest2NEW 31166 ddemeas 31495 eulerpartgbij 31630 0rrv 31709 reprpmtf1o 31897 subfacf 32422 tailf 33723 fdc 35035 heiborlem5 35108 elrfirn2 39313 mptfcl 39337 mzpexpmpt 39362 mzpsubst 39365 rabdiophlem1 39418 rabdiophlem2 39419 pw2f1ocnv 39654 refsumcn 41307 fompt 41473 fmptf 41529 fprodcnlem 41900 dvsinax 42217 itgsubsticclem 42280 fargshiftf 43620 isomuspgrlem2b 44014 |
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