Step | Hyp | Ref
| Expression |
1 | | eqeq1 2359 |
. . . . . 6
1c
1c |
2 | 1 | rexbidv 2636 |
. . . . 5
Nn 1c Nn 1c |
3 | | neeq1 2525 |
. . . . 5
|
4 | 2, 3 | anbi12d 691 |
. . . 4
Nn 1c Nn 1c |
5 | | df-oddfin 4446 |
. . . 4
Oddfin
Nn 1c |
6 | 4, 5 | elab2g 2988 |
. . 3
Oddfin
Oddfin Nn 1c |
7 | 6 | ibi 232 |
. 2
Oddfin Nn 1c |
8 | | addceq2 4385 |
. . . . . . . . . . . . . 14
|
9 | | addcnul1 4453 |
. . . . . . . . . . . . . 14
|
10 | 8, 9 | syl6eq 2401 |
. . . . . . . . . . . . 13
|
11 | | addceq1 4384 |
. . . . . . . . . . . . 13
1c 1c |
12 | 10, 11 | syl 15 |
. . . . . . . . . . . 12
1c 1c |
13 | | addccom 4407 |
. . . . . . . . . . . . 13
1c 1c |
14 | | addcnul1 4453 |
. . . . . . . . . . . . 13
1c |
15 | 13, 14 | eqtri 2373 |
. . . . . . . . . . . 12
1c |
16 | 12, 15 | syl6eq 2401 |
. . . . . . . . . . 11
1c |
17 | 16 | necon3i 2556 |
. . . . . . . . . 10
1c |
18 | | tfinprop 4490 |
. . . . . . . . . . 11
Nn Tfin Nn 1 Tfin |
19 | 18 | simpld 445 |
. . . . . . . . . 10
Nn Tfin Nn |
20 | 17, 19 | sylan2 460 |
. . . . . . . . 9
Nn
1c
Tfin Nn |
21 | | nncaddccl 4420 |
. . . . . . . . . . . 12
Nn Nn Nn |
22 | 21 | anidms 626 |
. . . . . . . . . . 11
Nn
Nn |
23 | | 1cnnc 4409 |
. . . . . . . . . . . 12
1c
Nn |
24 | | tfindi 4497 |
. . . . . . . . . . . 12
Nn 1c Nn 1c Tfin 1c
Tfin
Tfin
1c |
25 | 23, 24 | mp3an2 1265 |
. . . . . . . . . . 11
Nn
1c
Tfin 1c
Tfin
Tfin
1c |
26 | 22, 25 | sylan 457 |
. . . . . . . . . 10
Nn
1c
Tfin 1c
Tfin
Tfin
1c |
27 | | addcnnul 4454 |
. . . . . . . . . . . . 13
1c
1c |
28 | 27 | simpld 445 |
. . . . . . . . . . . 12
1c |
29 | | tfindi 4497 |
. . . . . . . . . . . . 13
Nn Nn
Tfin Tfin
Tfin |
30 | 29 | 3anidm12 1239 |
. . . . . . . . . . . 12
Nn
Tfin Tfin
Tfin |
31 | 28, 30 | sylan2 460 |
. . . . . . . . . . 11
Nn
1c
Tfin Tfin
Tfin |
32 | | tfin1c 4500 |
. . . . . . . . . . . 12
Tfin 1c 1c |
33 | | addceq12 4386 |
. . . . . . . . . . . 12
Tfin
Tfin
Tfin
Tfin 1c 1c Tfin Tfin 1c Tfin Tfin 1c |
34 | 32, 33 | mpan2 652 |
. . . . . . . . . . 11
Tfin
Tfin Tfin Tfin
Tfin
1c
Tfin Tfin
1c |
35 | 31, 34 | syl 15 |
. . . . . . . . . 10
Nn
1c
Tfin Tfin 1c Tfin Tfin 1c |
36 | 26, 35 | eqtrd 2385 |
. . . . . . . . 9
Nn
1c
Tfin 1c
Tfin Tfin 1c |
37 | | addceq12 4386 |
. . . . . . . . . . . . 13
Tfin Tfin
Tfin Tfin |
38 | 37 | anidms 626 |
. . . . . . . . . . . 12
Tfin
Tfin Tfin |
39 | | addceq1 4384 |
. . . . . . . . . . . 12
Tfin Tfin
1c
Tfin Tfin
1c |
40 | 38, 39 | syl 15 |
. . . . . . . . . . 11
Tfin
1c
Tfin Tfin
1c |
41 | 40 | eqeq2d 2364 |
. . . . . . . . . 10
Tfin Tfin
1c 1c Tfin 1c
Tfin Tfin 1c |
42 | 41 | rspcev 2956 |
. . . . . . . . 9
Tfin
Nn Tfin 1c Tfin
Tfin
1c
Nn Tfin
1c
1c |
43 | 20, 36, 42 | syl2anc 642 |
. . . . . . . 8
Nn
1c
Nn Tfin 1c
1c |
44 | | peano2 4404 |
. . . . . . . . . 10
Nn
1c
Nn |
45 | 22, 44 | syl 15 |
. . . . . . . . 9
Nn
1c
Nn |
46 | | tfinnnul 4491 |
. . . . . . . . 9
1c
Nn
1c
Tfin 1c |
47 | 45, 46 | sylan 457 |
. . . . . . . 8
Nn
1c
Tfin 1c |
48 | 43, 47 | jca 518 |
. . . . . . 7
Nn
1c
Nn Tfin 1c 1c Tfin
1c |
49 | | tfinex 4486 |
. . . . . . . 8
Tfin 1c |
50 | | eqeq1 2359 |
. . . . . . . . . 10
Tfin
1c
1c
Tfin 1c 1c |
51 | 50 | rexbidv 2636 |
. . . . . . . . 9
Tfin
1c
Nn 1c Nn Tfin 1c
1c |
52 | | neeq1 2525 |
. . . . . . . . 9
Tfin
1c
Tfin 1c |
53 | 51, 52 | anbi12d 691 |
. . . . . . . 8
Tfin
1c
Nn 1c Nn Tfin 1c
1c Tfin 1c |
54 | | df-oddfin 4446 |
. . . . . . . 8
Oddfin
Nn 1c |
55 | 49, 53, 54 | elab2 2989 |
. . . . . . 7
Tfin 1c Oddfin Nn Tfin 1c
1c Tfin 1c |
56 | 48, 55 | sylibr 203 |
. . . . . 6
Nn
1c
Tfin 1c
Oddfin |
57 | 56 | ex 423 |
. . . . 5
Nn
1c
Tfin 1c Oddfin |
58 | | neeq1 2525 |
. . . . . . . 8
1c
1c |
59 | | tfineq 4489 |
. . . . . . . . 9
1c
Tfin
Tfin 1c |
60 | 59 | eleq1d 2419 |
. . . . . . . 8
1c
Tfin
Oddfin Tfin 1c Oddfin |
61 | 58, 60 | imbi12d 311 |
. . . . . . 7
1c
Tfin
Oddfin
1c
Tfin 1c Oddfin |
62 | 61 | biimprd 214 |
. . . . . 6
1c
1c
Tfin 1c Oddfin Tfin Oddfin |
63 | 62 | com12 27 |
. . . . 5
1c
Tfin 1c Oddfin 1c
Tfin
Oddfin |
64 | 57, 63 | syl 15 |
. . . 4
Nn 1c
Tfin
Oddfin |
65 | 64 | rexlimiv 2733 |
. . 3
Nn 1c Tfin Oddfin |
66 | 65 | imp 418 |
. 2
Nn 1c Tfin Oddfin |
67 | 7, 66 | syl 15 |
1
Oddfin Tfin
Oddfin |