Description: Value of the transposition at an ordered pair <. A , B >. . (Contributed by Mario Carneiro, 10-Sep-2015)
Ref | Expression | ||
---|---|---|---|
Assertion | brtpos2 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reltpos | |
|
2 | 1 | brrelex1i | |
3 | 2 | a1i | |
4 | elex | |
|
5 | 4 | adantr | |
6 | 5 | a1i | |
7 | df-tpos | |
|
8 | 7 | breqi | |
9 | brcog | |
|
10 | 8 9 | bitrid | |
11 | funmpt | |
|
12 | funbrfv2b | |
|
13 | 11 12 | ax-mp | |
14 | snex | |
|
15 | 14 | cnvex | |
16 | 15 | uniex | |
17 | eqid | |
|
18 | 16 17 | dmmpti | |
19 | 18 | eleq2i | |
20 | eqcom | |
|
21 | 19 20 | anbi12i | |
22 | sneq | |
|
23 | 22 | cnveqd | |
24 | 23 | unieqd | |
25 | snex | |
|
26 | 25 | cnvex | |
27 | 26 | uniex | |
28 | 24 17 27 | fvmpt | |
29 | 28 | eqeq2d | |
30 | 29 | pm5.32i | |
31 | 21 30 | bitri | |
32 | 13 31 | bitri | |
33 | 32 | biancomi | |
34 | 33 | anbi1i | |
35 | anass | |
|
36 | 34 35 | bitri | |
37 | 36 | exbii | |
38 | breq1 | |
|
39 | 38 | anbi2d | |
40 | 27 39 | ceqsexv | |
41 | 37 40 | bitri | |
42 | 10 41 | bitrdi | |
43 | 42 | expcom | |
44 | 3 6 43 | pm5.21ndd | |