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Mirrors > Home > MPE Home > Th. List > dfac5lem1 | Structured version Visualization version Unicode version |
Description: Lemma for dfac5 8951. (Contributed by NM, 12-Apr-2004.) |
Ref | Expression |
---|---|
dfac5lem1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elin 3796 | . . . 4 | |
2 | elxp 5131 | . . . . . 6 | |
3 | excom 2042 | . . . . . 6 | |
4 | 2, 3 | bitri 264 | . . . . 5 |
5 | 4 | anbi1i 731 | . . . 4 |
6 | 19.41vv 1915 | . . . . 5 | |
7 | an32 839 | . . . . . . . . 9 | |
8 | eleq1 2689 | . . . . . . . . . . 11 | |
9 | 8 | pm5.32i 669 | . . . . . . . . . 10 |
10 | velsn 4193 | . . . . . . . . . . 11 | |
11 | 10 | anbi1i 731 | . . . . . . . . . 10 |
12 | 9, 11 | anbi12i 733 | . . . . . . . . 9 |
13 | an4 865 | . . . . . . . . . 10 | |
14 | ancom 466 | . . . . . . . . . . 11 | |
15 | ancom 466 | . . . . . . . . . . 11 | |
16 | 14, 15 | anbi12i 733 | . . . . . . . . . 10 |
17 | anass 681 | . . . . . . . . . 10 | |
18 | 13, 16, 17 | 3bitri 286 | . . . . . . . . 9 |
19 | 7, 12, 18 | 3bitri 286 | . . . . . . . 8 |
20 | 19 | exbii 1774 | . . . . . . 7 |
21 | vex 3203 | . . . . . . . 8 | |
22 | opeq1 4402 | . . . . . . . . . 10 | |
23 | 22 | eqeq2d 2632 | . . . . . . . . 9 |
24 | 22 | eleq1d 2686 | . . . . . . . . . 10 |
25 | 24 | anbi2d 740 | . . . . . . . . 9 |
26 | 23, 25 | anbi12d 747 | . . . . . . . 8 |
27 | 21, 26 | ceqsexv 3242 | . . . . . . 7 |
28 | 20, 27 | bitri 264 | . . . . . 6 |
29 | 28 | exbii 1774 | . . . . 5 |
30 | 6, 29 | bitr3i 266 | . . . 4 |
31 | 1, 5, 30 | 3bitri 286 | . . 3 |
32 | 31 | eubii 2492 | . 2 |
33 | 21 | euop2 4974 | . 2 |
34 | 32, 33 | bitri 264 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wb 196 wa 384 wceq 1483 wex 1704 wcel 1990 weu 2470 cin 3573 csn 4177 cop 4183 cxp 5112 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-opab 4713 df-xp 5120 |
This theorem is referenced by: dfac5lem5 8950 |
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