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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | r19.2z 4060 |
. . . 4
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2 | errel 7751 |
. . . . . 6
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3 | df-rel 5121 |
. . . . . 6
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4 | 2, 3 | sylib 208 |
. . . . 5
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5 | 4 | reximi 3011 |
. . . 4
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6 | iinss 4571 |
. . . 4
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7 | 1, 5, 6 | 3syl 18 |
. . 3
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8 | df-rel 5121 |
. . 3
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9 | 7, 8 | sylibr 224 |
. 2
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10 | id 22 |
. . . . . . . . 9
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11 | 10 | ersymb 7756 |
. . . . . . . 8
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12 | 11 | biimpd 219 |
. . . . . . 7
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13 | df-br 4654 |
. . . . . . 7
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14 | df-br 4654 |
. . . . . . 7
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15 | 12, 13, 14 | 3imtr3g 284 |
. . . . . 6
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16 | 15 | ral2imi 2947 |
. . . . 5
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17 | 16 | adantl 482 |
. . . 4
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18 | df-br 4654 |
. . . . 5
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19 | opex 4932 |
. . . . . 6
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20 | eliin 4525 |
. . . . . 6
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21 | 19, 20 | ax-mp 5 |
. . . . 5
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22 | 18, 21 | bitri 264 |
. . . 4
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23 | df-br 4654 |
. . . . 5
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24 | opex 4932 |
. . . . . 6
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25 | eliin 4525 |
. . . . . 6
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26 | 24, 25 | ax-mp 5 |
. . . . 5
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27 | 23, 26 | bitri 264 |
. . . 4
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28 | 17, 22, 27 | 3imtr4g 285 |
. . 3
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29 | 28 | imp 445 |
. 2
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30 | r19.26 3064 |
. . . . 5
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31 | 10 | ertr 7757 |
. . . . . . . 8
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32 | df-br 4654 |
. . . . . . . . 9
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33 | 13, 32 | anbi12i 733 |
. . . . . . . 8
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34 | df-br 4654 |
. . . . . . . 8
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35 | 31, 33, 34 | 3imtr3g 284 |
. . . . . . 7
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36 | 35 | ral2imi 2947 |
. . . . . 6
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37 | 36 | adantl 482 |
. . . . 5
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38 | 30, 37 | syl5bir 233 |
. . . 4
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39 | df-br 4654 |
. . . . . 6
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40 | opex 4932 |
. . . . . . 7
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41 | eliin 4525 |
. . . . . . 7
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42 | 40, 41 | ax-mp 5 |
. . . . . 6
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43 | 39, 42 | bitri 264 |
. . . . 5
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44 | 22, 43 | anbi12i 733 |
. . . 4
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45 | df-br 4654 |
. . . . 5
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46 | opex 4932 |
. . . . . 6
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47 | eliin 4525 |
. . . . . 6
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48 | 46, 47 | ax-mp 5 |
. . . . 5
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49 | 45, 48 | bitri 264 |
. . . 4
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50 | 38, 44, 49 | 3imtr4g 285 |
. . 3
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51 | 50 | imp 445 |
. 2
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52 | simpl 473 |
. . . . . . . . . 10
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53 | simpr 477 |
. . . . . . . . . 10
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54 | 52, 53 | erref 7762 |
. . . . . . . . 9
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55 | df-br 4654 |
. . . . . . . . 9
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56 | 54, 55 | sylib 208 |
. . . . . . . 8
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57 | 56 | expcom 451 |
. . . . . . 7
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58 | 57 | ralimdv 2963 |
. . . . . 6
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59 | 58 | com12 32 |
. . . . 5
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60 | 59 | adantl 482 |
. . . 4
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61 | r19.26 3064 |
. . . . . 6
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
62 | r19.2z 4060 |
. . . . . . . 8
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63 | vex 3203 |
. . . . . . . . . . 11
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64 | 63, 63 | opeldm 5328 |
. . . . . . . . . 10
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65 | erdm 7752 |
. . . . . . . . . . . 12
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66 | 65 | eleq2d 2687 |
. . . . . . . . . . 11
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
67 | 66 | biimpa 501 |
. . . . . . . . . 10
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
68 | 64, 67 | sylan2 491 |
. . . . . . . . 9
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
69 | 68 | rexlimivw 3029 |
. . . . . . . 8
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70 | 62, 69 | syl 17 |
. . . . . . 7
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71 | 70 | ex 450 |
. . . . . 6
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72 | 61, 71 | syl5bir 233 |
. . . . 5
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73 | 72 | expdimp 453 |
. . . 4
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74 | 60, 73 | impbid 202 |
. . 3
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75 | df-br 4654 |
. . . 4
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76 | opex 4932 |
. . . . 5
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77 | eliin 4525 |
. . . . 5
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78 | 76, 77 | ax-mp 5 |
. . . 4
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
79 | 75, 78 | bitri 264 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
80 | 74, 79 | syl6bbr 278 |
. 2
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81 | 9, 29, 51, 80 | iserd 7768 |
1
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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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