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Mirrors > Home > ILE Home > Th. List > funopg | Unicode version |
Description: A Kuratowski ordered pair is a function only if its components are equal. (Contributed by NM, 5-Jun-2008.) (Revised by Mario Carneiro, 26-Apr-2015.) |
Ref | Expression |
---|---|
funopg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opeq1 3570 | . . . . 5 | |
2 | 1 | funeqd 4943 | . . . 4 |
3 | eqeq1 2087 | . . . 4 | |
4 | 2, 3 | imbi12d 232 | . . 3 |
5 | opeq2 3571 | . . . . 5 | |
6 | 5 | funeqd 4943 | . . . 4 |
7 | eqeq2 2090 | . . . 4 | |
8 | 6, 7 | imbi12d 232 | . . 3 |
9 | funrel 4939 | . . . . 5 | |
10 | vex 2604 | . . . . . 6 | |
11 | vex 2604 | . . . . . 6 | |
12 | 10, 11 | relop 4504 | . . . . 5 |
13 | 9, 12 | sylib 120 | . . . 4 |
14 | 10, 11 | opth 3992 | . . . . . . . 8 |
15 | vex 2604 | . . . . . . . . . . . 12 | |
16 | 15 | opid 3588 | . . . . . . . . . . 11 |
17 | 16 | preq1i 3472 | . . . . . . . . . 10 |
18 | vex 2604 | . . . . . . . . . . . 12 | |
19 | 15, 18 | dfop 3569 | . . . . . . . . . . 11 |
20 | 19 | preq2i 3473 | . . . . . . . . . 10 |
21 | 15 | snex 3957 | . . . . . . . . . . 11 |
22 | zfpair2 3965 | . . . . . . . . . . 11 | |
23 | 21, 22 | dfop 3569 | . . . . . . . . . 10 |
24 | 17, 20, 23 | 3eqtr4ri 2112 | . . . . . . . . 9 |
25 | 24 | eqeq2i 2091 | . . . . . . . 8 |
26 | 14, 25 | bitr3i 184 | . . . . . . 7 |
27 | dffun4 4933 | . . . . . . . . 9 | |
28 | 27 | simprbi 269 | . . . . . . . 8 |
29 | 15, 15 | opex 3984 | . . . . . . . . . . 11 |
30 | 29 | prid1 3498 | . . . . . . . . . 10 |
31 | eleq2 2142 | . . . . . . . . . 10 | |
32 | 30, 31 | mpbiri 166 | . . . . . . . . 9 |
33 | 15, 18 | opex 3984 | . . . . . . . . . . 11 |
34 | 33 | prid2 3499 | . . . . . . . . . 10 |
35 | eleq2 2142 | . . . . . . . . . 10 | |
36 | 34, 35 | mpbiri 166 | . . . . . . . . 9 |
37 | 32, 36 | jca 300 | . . . . . . . 8 |
38 | opeq12 3572 | . . . . . . . . . . . . . 14 | |
39 | 38 | 3adant3 958 | . . . . . . . . . . . . 13 |
40 | 39 | eleq1d 2147 | . . . . . . . . . . . 12 |
41 | opeq12 3572 | . . . . . . . . . . . . . 14 | |
42 | 41 | 3adant2 957 | . . . . . . . . . . . . 13 |
43 | 42 | eleq1d 2147 | . . . . . . . . . . . 12 |
44 | 40, 43 | anbi12d 456 | . . . . . . . . . . 11 |
45 | eqeq12 2093 | . . . . . . . . . . . 12 | |
46 | 45 | 3adant1 956 | . . . . . . . . . . 11 |
47 | 44, 46 | imbi12d 232 | . . . . . . . . . 10 |
48 | 47 | spc3gv 2690 | . . . . . . . . 9 |
49 | 15, 15, 18, 48 | mp3an 1268 | . . . . . . . 8 |
50 | 28, 37, 49 | syl2im 38 | . . . . . . 7 |
51 | 26, 50 | syl5bi 150 | . . . . . 6 |
52 | dfsn2 3412 | . . . . . . . . . . 11 | |
53 | preq2 3470 | . . . . . . . . . . 11 | |
54 | 52, 53 | syl5req 2126 | . . . . . . . . . 10 |
55 | 54 | eqeq2d 2092 | . . . . . . . . 9 |
56 | eqtr3 2100 | . . . . . . . . . 10 | |
57 | 56 | expcom 114 | . . . . . . . . 9 |
58 | 55, 57 | syl6bi 161 | . . . . . . . 8 |
59 | 58 | com13 79 | . . . . . . 7 |
60 | 59 | imp 122 | . . . . . 6 |
61 | 51, 60 | sylcom 28 | . . . . 5 |
62 | 61 | exlimdvv 1818 | . . . 4 |
63 | 13, 62 | mpd 13 | . . 3 |
64 | 4, 8, 63 | vtocl2g 2662 | . 2 |
65 | 64 | 3impia 1135 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wb 103 w3a 919 wal 1282 wceq 1284 wex 1421 wcel 1433 cvv 2601 csn 3398 cpr 3399 cop 3401 wrel 4368 wfun 4916 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-v 2603 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-br 3786 df-opab 3840 df-id 4048 df-xp 4369 df-rel 4370 df-cnv 4371 df-co 4372 df-fun 4924 |
This theorem is referenced by: (None) |
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