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Mirrors > Home > MPE Home > Th. List > Mathboxes > dford4 | Structured version Visualization version Unicode version |
Description: dford3 37595 expressed in primitives to demonstrate shortness. (Contributed by Stefan O'Rear, 28-Oct-2014.) |
Ref | Expression |
---|---|
dford4 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dford3 37595 | . 2 | |
2 | dftr2 4754 | . . . . 5 | |
3 | 19.3v 1897 | . . . . . . . 8 | |
4 | ancom 466 | . . . . . . . . 9 | |
5 | 4 | imbi1i 339 | . . . . . . . 8 |
6 | 3, 5 | bitri 264 | . . . . . . 7 |
7 | 6 | 2albii 1748 | . . . . . 6 |
8 | alcom 2037 | . . . . . 6 | |
9 | 7, 8 | bitri 264 | . . . . 5 |
10 | 2, 9 | bitr4i 267 | . . . 4 |
11 | df-ral 2917 | . . . . 5 | |
12 | dftr2 4754 | . . . . . . . . 9 | |
13 | 12 | imbi2i 326 | . . . . . . . 8 |
14 | nfv 1843 | . . . . . . . . 9 | |
15 | nfv 1843 | . . . . . . . . 9 | |
16 | 14, 15 | 19.21-2 2078 | . . . . . . . 8 |
17 | 13, 16 | bitr4i 267 | . . . . . . 7 |
18 | impexp 462 | . . . . . . . . . 10 | |
19 | ancom 466 | . . . . . . . . . . . . 13 | |
20 | 19 | anbi2i 730 | . . . . . . . . . . . 12 |
21 | anass 681 | . . . . . . . . . . . 12 | |
22 | 20, 21 | bitr4i 267 | . . . . . . . . . . 11 |
23 | 22 | imbi1i 339 | . . . . . . . . . 10 |
24 | 18, 23 | bitr3i 266 | . . . . . . . . 9 |
25 | impexp 462 | . . . . . . . . 9 | |
26 | 24, 25 | bitri 264 | . . . . . . . 8 |
27 | 26 | 2albii 1748 | . . . . . . 7 |
28 | alcom 2037 | . . . . . . 7 | |
29 | 17, 27, 28 | 3bitri 286 | . . . . . 6 |
30 | 29 | albii 1747 | . . . . 5 |
31 | 11, 30 | bitri 264 | . . . 4 |
32 | 10, 31 | anbi12i 733 | . . 3 |
33 | 19.26 1798 | . . 3 | |
34 | 32, 33 | bitr4i 267 | . 2 |
35 | 19.26-2 1799 | . . . 4 | |
36 | pm4.76 910 | . . . . 5 | |
37 | 36 | 2albii 1748 | . . . 4 |
38 | 35, 37 | bitr3i 266 | . . 3 |
39 | 38 | albii 1747 | . 2 |
40 | 1, 34, 39 | 3bitri 286 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wal 1481 wcel 1990 wral 2912 wtr 4752 word 5722 |
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-8 1992 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 ax-un 6949 ax-reg 8497 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 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-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-tr 4753 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-ord 5726 df-on 5727 df-suc 5729 |
This theorem is referenced by: (None) |
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