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Mirrors > Home > MPE Home > Th. List > opth1 | Structured version Visualization version Unicode version |
Description: Equality of the first members of equal ordered pairs. (Contributed by NM, 28-May-2008.) (Revised by Mario Carneiro, 26-Apr-2015.) |
Ref | Expression |
---|---|
opth1.1 | |
opth1.2 |
Ref | Expression |
---|---|
opth1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opth1.1 | . . . 4 | |
2 | opth1.2 | . . . 4 | |
3 | 1, 2 | opi1 4937 | . . 3 |
4 | id 22 | . . 3 | |
5 | 3, 4 | syl5eleq 2707 | . 2 |
6 | 1 | sneqr 4371 | . . . 4 |
7 | 6 | a1i 11 | . . 3 |
8 | oprcl 4427 | . . . . . . 7 | |
9 | 8 | simpld 475 | . . . . . 6 |
10 | prid1g 4295 | . . . . . 6 | |
11 | 9, 10 | syl 17 | . . . . 5 |
12 | eleq2 2690 | . . . . 5 | |
13 | 11, 12 | syl5ibrcom 237 | . . . 4 |
14 | elsni 4194 | . . . . 5 | |
15 | 14 | eqcomd 2628 | . . . 4 |
16 | 13, 15 | syl6 35 | . . 3 |
17 | id 22 | . . . . 5 | |
18 | dfopg 4400 | . . . . . 6 | |
19 | 8, 18 | syl 17 | . . . . 5 |
20 | 17, 19 | eleqtrd 2703 | . . . 4 |
21 | elpri 4197 | . . . 4 | |
22 | 20, 21 | syl 17 | . . 3 |
23 | 7, 16, 22 | mpjaod 396 | . 2 |
24 | 5, 23 | syl 17 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wo 383 wa 384 wceq 1483 wcel 1990 cvv 3200 csn 4177 cpr 4179 cop 4183 |
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-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-v 3202 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 |
This theorem is referenced by: opth 4945 dmsnopg 5606 funcnvsn 5936 oprabid 6677 seqomlem2 7546 unxpdomlem3 8166 dfac5lem4 8949 dcomex 9269 canthwelem 9472 uzrdgfni 12757 gsum2d2 18373 poimirlem9 33418 |
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