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Mirrors > Home > MPE Home > Th. List > fr3nr | Structured version Visualization version Unicode version |
Description: A well-founded relation has no 3-cycle loops. Special case of Proposition 6.23 of [TakeutiZaring] p. 30. (Contributed by NM, 10-Apr-1994.) (Revised by Mario Carneiro, 22-Jun-2015.) |
Ref | Expression |
---|---|
fr3nr |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tpex 6957 | . . . . . . 7 | |
2 | 1 | a1i 11 | . . . . . 6 |
3 | simpl 473 | . . . . . 6 | |
4 | df-tp 4182 | . . . . . . 7 | |
5 | simpr1 1067 | . . . . . . . . 9 | |
6 | simpr2 1068 | . . . . . . . . 9 | |
7 | prssi 4353 | . . . . . . . . 9 | |
8 | 5, 6, 7 | syl2anc 693 | . . . . . . . 8 |
9 | simpr3 1069 | . . . . . . . . 9 | |
10 | 9 | snssd 4340 | . . . . . . . 8 |
11 | 8, 10 | unssd 3789 | . . . . . . 7 |
12 | 4, 11 | syl5eqss 3649 | . . . . . 6 |
13 | 5 | tpnzd 4314 | . . . . . 6 |
14 | fri 5076 | . . . . . 6 | |
15 | 2, 3, 12, 13, 14 | syl22anc 1327 | . . . . 5 |
16 | breq2 4657 | . . . . . . . . 9 | |
17 | 16 | notbid 308 | . . . . . . . 8 |
18 | 17 | ralbidv 2986 | . . . . . . 7 |
19 | breq2 4657 | . . . . . . . . 9 | |
20 | 19 | notbid 308 | . . . . . . . 8 |
21 | 20 | ralbidv 2986 | . . . . . . 7 |
22 | breq2 4657 | . . . . . . . . 9 | |
23 | 22 | notbid 308 | . . . . . . . 8 |
24 | 23 | ralbidv 2986 | . . . . . . 7 |
25 | 18, 21, 24 | rextpg 4237 | . . . . . 6 |
26 | 25 | adantl 482 | . . . . 5 |
27 | 15, 26 | mpbid 222 | . . . 4 |
28 | snsstp3 4349 | . . . . . . 7 | |
29 | snssg 4327 | . . . . . . . 8 | |
30 | 9, 29 | syl 17 | . . . . . . 7 |
31 | 28, 30 | mpbiri 248 | . . . . . 6 |
32 | breq1 4656 | . . . . . . . 8 | |
33 | 32 | notbid 308 | . . . . . . 7 |
34 | 33 | rspcv 3305 | . . . . . 6 |
35 | 31, 34 | syl 17 | . . . . 5 |
36 | snsstp1 4347 | . . . . . . 7 | |
37 | snssg 4327 | . . . . . . . 8 | |
38 | 5, 37 | syl 17 | . . . . . . 7 |
39 | 36, 38 | mpbiri 248 | . . . . . 6 |
40 | breq1 4656 | . . . . . . . 8 | |
41 | 40 | notbid 308 | . . . . . . 7 |
42 | 41 | rspcv 3305 | . . . . . 6 |
43 | 39, 42 | syl 17 | . . . . 5 |
44 | snsstp2 4348 | . . . . . . 7 | |
45 | snssg 4327 | . . . . . . . 8 | |
46 | 6, 45 | syl 17 | . . . . . . 7 |
47 | 44, 46 | mpbiri 248 | . . . . . 6 |
48 | breq1 4656 | . . . . . . . 8 | |
49 | 48 | notbid 308 | . . . . . . 7 |
50 | 49 | rspcv 3305 | . . . . . 6 |
51 | 47, 50 | syl 17 | . . . . 5 |
52 | 35, 43, 51 | 3orim123d 1407 | . . . 4 |
53 | 27, 52 | mpd 15 | . . 3 |
54 | 3ianor 1055 | . . 3 | |
55 | 53, 54 | sylibr 224 | . 2 |
56 | 3anrot 1043 | . 2 | |
57 | 55, 56 | sylnib 318 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wa 384 w3o 1036 w3a 1037 wceq 1483 wcel 1990 wne 2794 wral 2912 wrex 2913 cvv 3200 cun 3572 wss 3574 c0 3915 csn 4177 cpr 4179 ctp 4181 class class class wbr 4653 wfr 5070 |
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 |
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-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-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-br 4654 df-fr 5073 |
This theorem is referenced by: epne3 6980 dfwe2 6981 |
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