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Mirrors > Home > ILE Home > Th. List > reuind | Unicode version |
Description: Existential uniqueness via an indirect equality. (Contributed by NM, 16-Oct-2010.) |
Ref | Expression |
---|---|
reuind.1 | |
reuind.2 |
Ref | Expression |
---|---|
reuind |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reuind.2 | . . . . . . . 8 | |
2 | 1 | eleq1d 2147 | . . . . . . 7 |
3 | reuind.1 | . . . . . . 7 | |
4 | 2, 3 | anbi12d 456 | . . . . . 6 |
5 | 4 | cbvexv 1836 | . . . . 5 |
6 | r19.41v 2510 | . . . . . . 7 | |
7 | 6 | exbii 1536 | . . . . . 6 |
8 | rexcom4 2622 | . . . . . 6 | |
9 | risset 2394 | . . . . . . . 8 | |
10 | 9 | anbi1i 445 | . . . . . . 7 |
11 | 10 | exbii 1536 | . . . . . 6 |
12 | 7, 8, 11 | 3bitr4ri 211 | . . . . 5 |
13 | 5, 12 | bitri 182 | . . . 4 |
14 | eqeq2 2090 | . . . . . . . . . 10 | |
15 | 14 | imim2i 12 | . . . . . . . . 9 |
16 | bi2 128 | . . . . . . . . . . 11 | |
17 | 16 | imim2i 12 | . . . . . . . . . 10 |
18 | an31 528 | . . . . . . . . . . . 12 | |
19 | 18 | imbi1i 236 | . . . . . . . . . . 11 |
20 | impexp 259 | . . . . . . . . . . 11 | |
21 | impexp 259 | . . . . . . . . . . 11 | |
22 | 19, 20, 21 | 3bitr3i 208 | . . . . . . . . . 10 |
23 | 17, 22 | sylib 120 | . . . . . . . . 9 |
24 | 15, 23 | syl 14 | . . . . . . . 8 |
25 | 24 | 2alimi 1385 | . . . . . . 7 |
26 | 19.23v 1804 | . . . . . . . . . 10 | |
27 | an12 525 | . . . . . . . . . . . . . 14 | |
28 | eleq1 2141 | . . . . . . . . . . . . . . . 16 | |
29 | 28 | adantr 270 | . . . . . . . . . . . . . . 15 |
30 | 29 | pm5.32ri 442 | . . . . . . . . . . . . . 14 |
31 | 27, 30 | bitr4i 185 | . . . . . . . . . . . . 13 |
32 | 31 | exbii 1536 | . . . . . . . . . . . 12 |
33 | 19.42v 1827 | . . . . . . . . . . . 12 | |
34 | 32, 33 | bitri 182 | . . . . . . . . . . 11 |
35 | 34 | imbi1i 236 | . . . . . . . . . 10 |
36 | 26, 35 | bitri 182 | . . . . . . . . 9 |
37 | 36 | albii 1399 | . . . . . . . 8 |
38 | 19.21v 1794 | . . . . . . . 8 | |
39 | 37, 38 | bitri 182 | . . . . . . 7 |
40 | 25, 39 | sylib 120 | . . . . . 6 |
41 | 40 | expd 254 | . . . . 5 |
42 | 41 | reximdvai 2461 | . . . 4 |
43 | 13, 42 | syl5bi 150 | . . 3 |
44 | 43 | imp 122 | . 2 |
45 | pm4.24 387 | . . . . . . . . 9 | |
46 | 45 | biimpi 118 | . . . . . . . 8 |
47 | prth 336 | . . . . . . . 8 | |
48 | eqtr3 2100 | . . . . . . . 8 | |
49 | 46, 47, 48 | syl56 34 | . . . . . . 7 |
50 | 49 | alanimi 1388 | . . . . . 6 |
51 | 19.23v 1804 | . . . . . . . 8 | |
52 | 51 | biimpi 118 | . . . . . . 7 |
53 | 52 | com12 30 | . . . . . 6 |
54 | 50, 53 | syl5 32 | . . . . 5 |
55 | 54 | a1d 22 | . . . 4 |
56 | 55 | ralrimivv 2442 | . . 3 |
57 | 56 | adantl 271 | . 2 |
58 | eqeq1 2087 | . . . . 5 | |
59 | 58 | imbi2d 228 | . . . 4 |
60 | 59 | albidv 1745 | . . 3 |
61 | 60 | reu4 2786 | . 2 |
62 | 44, 57, 61 | sylanbrc 408 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wb 103 wal 1282 wceq 1284 wex 1421 wcel 1433 wral 2348 wrex 2349 wreu 2350 |
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-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 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-rex 2354 df-reu 2355 df-rmo 2356 df-v 2603 |
This theorem is referenced by: (None) |
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