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Mirrors > Home > MPE Home > Th. List > Mathboxes > altopthsn | Structured version Visualization version Unicode version |
Description: Two alternate ordered pairs are equal iff the singletons of their respective elements are equal. Note that this holds regardless of sethood of any of the elements. (Contributed by Scott Fenton, 16-Apr-2012.) |
Ref | Expression |
---|---|
altopthsn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-altop 32065 | . . 3 | |
2 | df-altop 32065 | . . 3 | |
3 | 1, 2 | eqeq12i 2636 | . 2 |
4 | snex 4908 | . . . . . 6 | |
5 | prex 4909 | . . . . . 6 | |
6 | snex 4908 | . . . . . 6 | |
7 | prex 4909 | . . . . . 6 | |
8 | 4, 5, 6, 7 | preq12b 4382 | . . . . 5 |
9 | simpl 473 | . . . . . 6 | |
10 | snsspr1 4345 | . . . . . . . . 9 | |
11 | sseq2 3627 | . . . . . . . . 9 | |
12 | 10, 11 | mpbii 223 | . . . . . . . 8 |
13 | 12 | adantl 482 | . . . . . . 7 |
14 | snsspr1 4345 | . . . . . . . . 9 | |
15 | sseq2 3627 | . . . . . . . . 9 | |
16 | 14, 15 | mpbiri 248 | . . . . . . . 8 |
17 | 16 | adantr 481 | . . . . . . 7 |
18 | 13, 17 | eqssd 3620 | . . . . . 6 |
19 | 9, 18 | jaoi 394 | . . . . 5 |
20 | 8, 19 | sylbi 207 | . . . 4 |
21 | uneq1 3760 | . . . . . . . . . 10 | |
22 | df-pr 4180 | . . . . . . . . . 10 | |
23 | df-pr 4180 | . . . . . . . . . 10 | |
24 | 21, 22, 23 | 3eqtr4g 2681 | . . . . . . . . 9 |
25 | 24 | preq2d 4275 | . . . . . . . 8 |
26 | preq1 4268 | . . . . . . . 8 | |
27 | 25, 26 | eqtrd 2656 | . . . . . . 7 |
28 | 27 | eqeq1d 2624 | . . . . . 6 |
29 | 28 | biimpd 219 | . . . . 5 |
30 | prex 4909 | . . . . . . 7 | |
31 | 30, 7 | preqr2 4381 | . . . . . 6 |
32 | snex 4908 | . . . . . . 7 | |
33 | snex 4908 | . . . . . . 7 | |
34 | 32, 33 | preqr2 4381 | . . . . . 6 |
35 | 31, 34 | syl 17 | . . . . 5 |
36 | 29, 35 | syl6com 37 | . . . 4 |
37 | 20, 36 | jcai 559 | . . 3 |
38 | preq2 4269 | . . . . 5 | |
39 | 38 | preq2d 4275 | . . . 4 |
40 | 27, 39 | sylan9eq 2676 | . . 3 |
41 | 37, 40 | impbii 199 | . 2 |
42 | 3, 41 | bitri 264 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wb 196 wo 383 wa 384 wceq 1483 cun 3572 wss 3574 csn 4177 cpr 4179 caltop 32063 |
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-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-sn 4178 df-pr 4180 df-altop 32065 |
This theorem is referenced by: altopeq12 32069 altopth1 32072 altopth2 32073 altopthg 32074 altopthbg 32075 |
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