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Mirrors > Home > MPE Home > Th. List > iiner | Structured version Visualization version Unicode version |
Description: The intersection of a nonempty family of equivalence relations is an equivalence relation. (Contributed by Mario Carneiro, 27-Sep-2015.) |
Ref | Expression |
---|---|
iiner |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | r19.2z 4060 | . . . 4 | |
2 | errel 7751 | . . . . . 6 | |
3 | df-rel 5121 | . . . . . 6 | |
4 | 2, 3 | sylib 208 | . . . . 5 |
5 | 4 | reximi 3011 | . . . 4 |
6 | iinss 4571 | . . . 4 | |
7 | 1, 5, 6 | 3syl 18 | . . 3 |
8 | df-rel 5121 | . . 3 | |
9 | 7, 8 | sylibr 224 | . 2 |
10 | id 22 | . . . . . . . . 9 | |
11 | 10 | ersymb 7756 | . . . . . . . 8 |
12 | 11 | biimpd 219 | . . . . . . 7 |
13 | df-br 4654 | . . . . . . 7 | |
14 | df-br 4654 | . . . . . . 7 | |
15 | 12, 13, 14 | 3imtr3g 284 | . . . . . 6 |
16 | 15 | ral2imi 2947 | . . . . 5 |
17 | 16 | adantl 482 | . . . 4 |
18 | df-br 4654 | . . . . 5 | |
19 | opex 4932 | . . . . . 6 | |
20 | eliin 4525 | . . . . . 6 | |
21 | 19, 20 | ax-mp 5 | . . . . 5 |
22 | 18, 21 | bitri 264 | . . . 4 |
23 | df-br 4654 | . . . . 5 | |
24 | opex 4932 | . . . . . 6 | |
25 | eliin 4525 | . . . . . 6 | |
26 | 24, 25 | ax-mp 5 | . . . . 5 |
27 | 23, 26 | bitri 264 | . . . 4 |
28 | 17, 22, 27 | 3imtr4g 285 | . . 3 |
29 | 28 | imp 445 | . 2 |
30 | r19.26 3064 | . . . . 5 | |
31 | 10 | ertr 7757 | . . . . . . . 8 |
32 | df-br 4654 | . . . . . . . . 9 | |
33 | 13, 32 | anbi12i 733 | . . . . . . . 8 |
34 | df-br 4654 | . . . . . . . 8 | |
35 | 31, 33, 34 | 3imtr3g 284 | . . . . . . 7 |
36 | 35 | ral2imi 2947 | . . . . . 6 |
37 | 36 | adantl 482 | . . . . 5 |
38 | 30, 37 | syl5bir 233 | . . . 4 |
39 | df-br 4654 | . . . . . 6 | |
40 | opex 4932 | . . . . . . 7 | |
41 | eliin 4525 | . . . . . . 7 | |
42 | 40, 41 | ax-mp 5 | . . . . . 6 |
43 | 39, 42 | bitri 264 | . . . . 5 |
44 | 22, 43 | anbi12i 733 | . . . 4 |
45 | df-br 4654 | . . . . 5 | |
46 | opex 4932 | . . . . . 6 | |
47 | eliin 4525 | . . . . . 6 | |
48 | 46, 47 | ax-mp 5 | . . . . 5 |
49 | 45, 48 | bitri 264 | . . . 4 |
50 | 38, 44, 49 | 3imtr4g 285 | . . 3 |
51 | 50 | imp 445 | . 2 |
52 | simpl 473 | . . . . . . . . . 10 | |
53 | simpr 477 | . . . . . . . . . 10 | |
54 | 52, 53 | erref 7762 | . . . . . . . . 9 |
55 | df-br 4654 | . . . . . . . . 9 | |
56 | 54, 55 | sylib 208 | . . . . . . . 8 |
57 | 56 | expcom 451 | . . . . . . 7 |
58 | 57 | ralimdv 2963 | . . . . . 6 |
59 | 58 | com12 32 | . . . . 5 |
60 | 59 | adantl 482 | . . . 4 |
61 | r19.26 3064 | . . . . . 6 | |
62 | r19.2z 4060 | . . . . . . . 8 | |
63 | vex 3203 | . . . . . . . . . . 11 | |
64 | 63, 63 | opeldm 5328 | . . . . . . . . . 10 |
65 | erdm 7752 | . . . . . . . . . . . 12 | |
66 | 65 | eleq2d 2687 | . . . . . . . . . . 11 |
67 | 66 | biimpa 501 | . . . . . . . . . 10 |
68 | 64, 67 | sylan2 491 | . . . . . . . . 9 |
69 | 68 | rexlimivw 3029 | . . . . . . . 8 |
70 | 62, 69 | syl 17 | . . . . . . 7 |
71 | 70 | ex 450 | . . . . . 6 |
72 | 61, 71 | syl5bir 233 | . . . . 5 |
73 | 72 | expdimp 453 | . . . 4 |
74 | 60, 73 | impbid 202 | . . 3 |
75 | df-br 4654 | . . . 4 | |
76 | opex 4932 | . . . . 5 | |
77 | eliin 4525 | . . . . 5 | |
78 | 76, 77 | ax-mp 5 | . . . 4 |
79 | 75, 78 | bitri 264 | . . 3 |
80 | 74, 79 | syl6bbr 278 | . 2 |
81 | 9, 29, 51, 80 | iserd 7768 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wcel 1990 wne 2794 wral 2912 wrex 2913 cvv 3200 wss 3574 c0 3915 cop 4183 ciin 4521 class class class wbr 4653 cxp 5112 cdm 5114 wrel 5119 wer 7739 |
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-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-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-iin 4523 df-br 4654 df-opab 4713 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-er 7742 |
This theorem is referenced by: riiner 7820 efger 18131 |
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