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Mirrors > Home > MPE Home > Th. List > fvprc | Structured version Visualization version GIF version |
Description: A function's value at a proper class is the empty set. See fvprcALT 6688 for a proof that uses ax-pow 5243 instead of ax-sep 5177 and ax-pr 5307. (Contributed by NM, 20-May-1998.) Avoid ax-pow 5243. (Revised by BTernaryTau, 3-Aug-2024.) |
Ref | Expression |
---|---|
fvprc | ⊢ (¬ 𝐴 ∈ V → (𝐹‘𝐴) = ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dtruALT2 5313 | . . . . . . . . . 10 ⊢ ¬ ∀𝑦 𝑦 = 𝑥 | |
2 | exnal 1834 | . . . . . . . . . . 11 ⊢ (∃𝑦 ¬ 𝑥 = 𝑦 ↔ ¬ ∀𝑦 𝑥 = 𝑦) | |
3 | equcom 2028 | . . . . . . . . . . . 12 ⊢ (𝑥 = 𝑦 ↔ 𝑦 = 𝑥) | |
4 | 3 | albii 1827 | . . . . . . . . . . 11 ⊢ (∀𝑦 𝑥 = 𝑦 ↔ ∀𝑦 𝑦 = 𝑥) |
5 | 2, 4 | xchbinx 337 | . . . . . . . . . 10 ⊢ (∃𝑦 ¬ 𝑥 = 𝑦 ↔ ¬ ∀𝑦 𝑦 = 𝑥) |
6 | 1, 5 | mpbir 234 | . . . . . . . . 9 ⊢ ∃𝑦 ¬ 𝑥 = 𝑦 |
7 | 6 | jctr 528 | . . . . . . . 8 ⊢ (∅ ∈ 𝐹 → (∅ ∈ 𝐹 ∧ ∃𝑦 ¬ 𝑥 = 𝑦)) |
8 | 19.42v 1962 | . . . . . . . 8 ⊢ (∃𝑦(∅ ∈ 𝐹 ∧ ¬ 𝑥 = 𝑦) ↔ (∅ ∈ 𝐹 ∧ ∃𝑦 ¬ 𝑥 = 𝑦)) | |
9 | 7, 8 | sylibr 237 | . . . . . . 7 ⊢ (∅ ∈ 𝐹 → ∃𝑦(∅ ∈ 𝐹 ∧ ¬ 𝑥 = 𝑦)) |
10 | opprc1 4794 | . . . . . . . . 9 ⊢ (¬ 𝐴 ∈ V → 〈𝐴, 𝑥〉 = ∅) | |
11 | 10 | eleq1d 2815 | . . . . . . . 8 ⊢ (¬ 𝐴 ∈ V → (〈𝐴, 𝑥〉 ∈ 𝐹 ↔ ∅ ∈ 𝐹)) |
12 | opprc1 4794 | . . . . . . . . . . . . 13 ⊢ (¬ 𝐴 ∈ V → 〈𝐴, 𝑦〉 = ∅) | |
13 | 12 | eleq1d 2815 | . . . . . . . . . . . 12 ⊢ (¬ 𝐴 ∈ V → (〈𝐴, 𝑦〉 ∈ 𝐹 ↔ ∅ ∈ 𝐹)) |
14 | 11, 13 | anbi12d 634 | . . . . . . . . . . 11 ⊢ (¬ 𝐴 ∈ V → ((〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹) ↔ (∅ ∈ 𝐹 ∧ ∅ ∈ 𝐹))) |
15 | anidm 568 | . . . . . . . . . . 11 ⊢ ((∅ ∈ 𝐹 ∧ ∅ ∈ 𝐹) ↔ ∅ ∈ 𝐹) | |
16 | 14, 15 | bitrdi 290 | . . . . . . . . . 10 ⊢ (¬ 𝐴 ∈ V → ((〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹) ↔ ∅ ∈ 𝐹)) |
17 | 16 | anbi1d 633 | . . . . . . . . 9 ⊢ (¬ 𝐴 ∈ V → (((〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹) ∧ ¬ 𝑥 = 𝑦) ↔ (∅ ∈ 𝐹 ∧ ¬ 𝑥 = 𝑦))) |
18 | 17 | exbidv 1929 | . . . . . . . 8 ⊢ (¬ 𝐴 ∈ V → (∃𝑦((〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹) ∧ ¬ 𝑥 = 𝑦) ↔ ∃𝑦(∅ ∈ 𝐹 ∧ ¬ 𝑥 = 𝑦))) |
19 | 11, 18 | imbi12d 348 | . . . . . . 7 ⊢ (¬ 𝐴 ∈ V → ((〈𝐴, 𝑥〉 ∈ 𝐹 → ∃𝑦((〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹) ∧ ¬ 𝑥 = 𝑦)) ↔ (∅ ∈ 𝐹 → ∃𝑦(∅ ∈ 𝐹 ∧ ¬ 𝑥 = 𝑦)))) |
20 | 9, 19 | mpbiri 261 | . . . . . 6 ⊢ (¬ 𝐴 ∈ V → (〈𝐴, 𝑥〉 ∈ 𝐹 → ∃𝑦((〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹) ∧ ¬ 𝑥 = 𝑦))) |
21 | df-br 5040 | . . . . . 6 ⊢ (𝐴𝐹𝑥 ↔ 〈𝐴, 𝑥〉 ∈ 𝐹) | |
22 | df-br 5040 | . . . . . . . . 9 ⊢ (𝐴𝐹𝑦 ↔ 〈𝐴, 𝑦〉 ∈ 𝐹) | |
23 | 21, 22 | anbi12i 630 | . . . . . . . 8 ⊢ ((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) ↔ (〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹)) |
24 | 23 | anbi1i 627 | . . . . . . 7 ⊢ (((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) ∧ ¬ 𝑥 = 𝑦) ↔ ((〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹) ∧ ¬ 𝑥 = 𝑦)) |
25 | 24 | exbii 1855 | . . . . . 6 ⊢ (∃𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) ∧ ¬ 𝑥 = 𝑦) ↔ ∃𝑦((〈𝐴, 𝑥〉 ∈ 𝐹 ∧ 〈𝐴, 𝑦〉 ∈ 𝐹) ∧ ¬ 𝑥 = 𝑦)) |
26 | 20, 21, 25 | 3imtr4g 299 | . . . . 5 ⊢ (¬ 𝐴 ∈ V → (𝐴𝐹𝑥 → ∃𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) ∧ ¬ 𝑥 = 𝑦))) |
27 | 26 | eximdv 1925 | . . . 4 ⊢ (¬ 𝐴 ∈ V → (∃𝑥 𝐴𝐹𝑥 → ∃𝑥∃𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) ∧ ¬ 𝑥 = 𝑦))) |
28 | exnal 1834 | . . . . 5 ⊢ (∃𝑥 ¬ ∀𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) → 𝑥 = 𝑦) ↔ ¬ ∀𝑥∀𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) → 𝑥 = 𝑦)) | |
29 | exanali 1867 | . . . . . 6 ⊢ (∃𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) ∧ ¬ 𝑥 = 𝑦) ↔ ¬ ∀𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) → 𝑥 = 𝑦)) | |
30 | 29 | exbii 1855 | . . . . 5 ⊢ (∃𝑥∃𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) ∧ ¬ 𝑥 = 𝑦) ↔ ∃𝑥 ¬ ∀𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) → 𝑥 = 𝑦)) |
31 | breq2 5043 | . . . . . . 7 ⊢ (𝑥 = 𝑦 → (𝐴𝐹𝑥 ↔ 𝐴𝐹𝑦)) | |
32 | 31 | mo4 2565 | . . . . . 6 ⊢ (∃*𝑥 𝐴𝐹𝑥 ↔ ∀𝑥∀𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) → 𝑥 = 𝑦)) |
33 | 32 | notbii 323 | . . . . 5 ⊢ (¬ ∃*𝑥 𝐴𝐹𝑥 ↔ ¬ ∀𝑥∀𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) → 𝑥 = 𝑦)) |
34 | 28, 30, 33 | 3bitr4ri 307 | . . . 4 ⊢ (¬ ∃*𝑥 𝐴𝐹𝑥 ↔ ∃𝑥∃𝑦((𝐴𝐹𝑥 ∧ 𝐴𝐹𝑦) ∧ ¬ 𝑥 = 𝑦)) |
35 | 27, 34 | syl6ibr 255 | . . 3 ⊢ (¬ 𝐴 ∈ V → (∃𝑥 𝐴𝐹𝑥 → ¬ ∃*𝑥 𝐴𝐹𝑥)) |
36 | df-eu 2568 | . . . . 5 ⊢ (∃!𝑥 𝐴𝐹𝑥 ↔ (∃𝑥 𝐴𝐹𝑥 ∧ ∃*𝑥 𝐴𝐹𝑥)) | |
37 | 36 | notbii 323 | . . . 4 ⊢ (¬ ∃!𝑥 𝐴𝐹𝑥 ↔ ¬ (∃𝑥 𝐴𝐹𝑥 ∧ ∃*𝑥 𝐴𝐹𝑥)) |
38 | imnan 403 | . . . 4 ⊢ ((∃𝑥 𝐴𝐹𝑥 → ¬ ∃*𝑥 𝐴𝐹𝑥) ↔ ¬ (∃𝑥 𝐴𝐹𝑥 ∧ ∃*𝑥 𝐴𝐹𝑥)) | |
39 | 37, 38 | bitr4i 281 | . . 3 ⊢ (¬ ∃!𝑥 𝐴𝐹𝑥 ↔ (∃𝑥 𝐴𝐹𝑥 → ¬ ∃*𝑥 𝐴𝐹𝑥)) |
40 | 35, 39 | sylibr 237 | . 2 ⊢ (¬ 𝐴 ∈ V → ¬ ∃!𝑥 𝐴𝐹𝑥) |
41 | tz6.12-2 6684 | . 2 ⊢ (¬ ∃!𝑥 𝐴𝐹𝑥 → (𝐹‘𝐴) = ∅) | |
42 | 40, 41 | syl 17 | 1 ⊢ (¬ 𝐴 ∈ V → (𝐹‘𝐴) = ∅) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 399 ∀wal 1541 = wceq 1543 ∃wex 1787 ∈ wcel 2112 ∃*wmo 2537 ∃!weu 2567 Vcvv 3398 ∅c0 4223 〈cop 4533 class class class wbr 5039 ‘cfv 6358 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-sep 5177 ax-nul 5184 ax-pr 5307 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-ne 2933 df-ral 3056 df-rex 3057 df-rab 3060 df-v 3400 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-nul 4224 df-if 4426 df-sn 4528 df-pr 4530 df-op 4534 df-uni 4806 df-br 5040 df-iota 6316 df-fv 6366 |
This theorem is referenced by: rnfvprc 6689 dffv3 6691 fvrn0 6723 ndmfv 6725 fv2prc 6735 csbfv 6740 dffv2 6784 brfvopabrbr 6793 fvmpti 6795 fvmptnf 6818 fvmptrabfv 6827 fvunsn 6972 fvmptopab 7244 brfvopab 7246 1stval 7741 2ndval 7742 fipwuni 9020 fipwss 9023 tctr 9334 ranklim 9425 rankuni 9444 alephsing 9855 itunisuc 9998 itunitc 10000 tskmcl 10420 hashfn 13907 s1prc 14126 trclfvg 14543 trclfvcotrg 14544 dfrtrclrec2 14586 rtrclreclem4 14589 dfrtrcl2 14590 strfvss 16688 strfvi 16718 setsnid 16720 elbasfv 16727 ressbas 16738 resslem 16741 firest 16891 topnval 16893 homffval 17147 comfffval 17155 oppchomfval 17171 oppchomfvalOLD 17172 oppcbas 17176 xpcbas 17639 oduval 17750 oduleval 17751 lubfun 17812 glbfun 17825 odujoin 17868 odumeet 17870 oduclatb 17967 ipopos 17996 isipodrs 17997 plusffval 18074 grpidval 18087 gsum0 18110 ismnd 18130 frmdplusg 18235 frmd0 18241 efmndbas 18252 efmndbasabf 18253 efmndplusg 18261 dfgrp2e 18347 grpinvfval 18360 grpinvfvalALT 18361 grpinvfvi 18364 grpsubfval 18365 grpsubfvalALT 18366 mulgfval 18444 mulgfvalALT 18445 mulgfvi 18448 cntrval 18667 cntzval 18669 cntzrcl 18675 oppgval 18693 oppgplusfval 18694 symgval 18715 lactghmga 18751 psgnfval 18846 odfval 18878 odfvalALT 18879 oppglsm 18985 efgval 19061 mgpval 19461 mgpplusg 19462 ringidval 19472 opprval 19596 opprmulfval 19597 dvdsrval 19617 invrfval 19645 dvrfval 19656 staffval 19837 scaffval 19871 islss 19925 sralem 20168 sravsca 20173 sraip 20174 rlmval 20182 rlmsca2 20192 2idlval 20225 rrgval 20279 zrhval 20428 zlmlem 20437 zlmvsca 20442 chrval 20444 evpmss 20502 ipffval 20564 ocvval 20583 elocv 20584 thlbas 20612 thlle 20613 thloc 20615 pjfval 20622 asclfval 20792 psrbas 20857 psr1val 21061 vr1val 21067 ply1val 21069 ply1basfvi 21116 ply1plusgfvi 21117 psr1sca2 21126 ply1sca2 21129 ply1ascl 21133 evl1fval 21198 evl1fval1 21201 toponsspwpw 21773 istps 21785 tgdif0 21843 indislem 21851 txindislem 22484 fsubbas 22718 filuni 22736 ussval 23111 isusp 23113 nmfval 23440 tnglem 23492 tngds 23500 tcphval 24069 deg1fval 24932 deg1fvi 24937 uc1pval 24991 mon1pval 24993 ttglem 26921 vtxval 27045 iedgval 27046 vtxvalprc 27090 iedgvalprc 27091 edgval 27094 prcliscplgr 27456 wwlks 27873 wwlksn 27875 clwwlk 28020 clwwlkn 28063 clwwlknonmpo 28126 vafval 28638 bafval 28639 smfval 28640 vsfval 28668 resvsca 31202 resvlem 31203 prclisacycgr 32780 mvtval 33129 mexval 33131 mexval2 33132 mdvval 33133 mrsubfval 33137 msubfval 33153 elmsubrn 33157 mvhfval 33162 mpstval 33164 msrfval 33166 mstaval 33173 mclsrcl 33190 mppsval 33201 mthmval 33204 sltval2 33545 sltintdifex 33550 fvsingle 33908 funpartfv 33933 fullfunfv 33935 rankeq1o 34159 atbase 36989 llnbase 37209 lplnbase 37234 lvolbase 37278 lhpbase 37698 mzpmfp 40213 kelac1 40532 mendbas 40653 mendplusgfval 40654 mendmulrfval 40656 mendsca 40658 mendvscafval 40659 brfvimex 41254 clsneibex 41330 neicvgbex 41340 sprssspr 44549 sprsymrelfvlem 44558 prprelprb 44585 prprspr2 44586 upwlkbprop 44916 ipolub00 45895 |
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