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| Description: The law of concretion. Special case of Theorem 9.5 of [Quine] p. 61. |
| Ref | Expression |
|---|---|
| opabid |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | clelab 1187 |
. 2
| |
| 2 | df-opab 2098 |
. . 3
| |
| 3 | 2 | eleq2i 1153 |
. 2
|
| 4 | 19.41v 963 |
. . . . . 6
| |
| 5 | anass 336 |
. . . . . . 7
| |
| 6 | 5 | biex 733 |
. . . . . 6
|
| 7 | cleqcom 1103 |
. . . . . . . 8
| |
| 8 | opex 1893 |
. . . . . . . . 9
| |
| 9 | 8 | eqvinc 1407 |
. . . . . . . 8
|
| 10 | visset 1350 |
. . . . . . . . 9
| |
| 11 | visset 1350 |
. . . . . . . . 9
| |
| 12 | visset 1350 |
. . . . . . . . 9
| |
| 13 | 10, 11, 12 | opth 1898 |
. . . . . . . 8
|
| 14 | 7, 9, 13 | 3bitr3 156 |
. . . . . . 7
|
| 15 | 14 | anbi1i 368 |
. . . . . 6
|
| 16 | 4, 6, 15 | 3bitr3r 157 |
. . . . 5
|
| 17 | 16 | bi2ex 734 |
. . . 4
|
| 18 | sbel2x 995 |
. . . 4
| |
| 19 | excom 728 |
. . . . 5
| |
| 20 | exdistr2 969 |
. . . . 5
| |
| 21 | excom 728 |
. . . . . 6
| |
| 22 | 21 | biex 733 |
. . . . 5
|
| 23 | 19, 20, 22 | 3bitr3 156 |
. . . 4
|
| 24 | 17, 18, 23 | 3bitr4 158 |
. . 3
|
| 25 | ax-17 925 |
. . . . . . 7
| |
| 26 | ax-17 925 |
. . . . . . . . 9
| |
| 27 | hbs1 986 |
. . . . . . . . 9
| |
| 28 | 26, 27 | hban 704 |
. . . . . . . 8
|
| 29 | 28 | hbex 701 |
. . . . . . 7
|
| 30 | opeq1 1876 |
. . . . . . . . . 10
| |
| 31 | 30 | cleq2d 1112 |
. . . . . . . . 9
|
| 32 | sbequ12 865 |
. . . . . . . . 9
| |
| 33 | 31, 32 | anbi12d 476 |
. . . . . . . 8
|
| 34 | 33 | biexdv 936 |
. . . . . . 7
|
| 35 | 25, 29, 34 | cbvex 849 |
. . . . . 6
|
| 36 | ax-17 925 |
. . . . . . . 8
| |
| 37 | ax-17 925 |
. . . . . . . . 9
| |
| 38 | hbs1 986 |
. . . . . . . . 9
| |
| 39 | 37, 38 | hban 704 |
. . . . . . . 8
|
| 40 | opeq2 1877 |
. . . . . . . . . 10
| |
| 41 | 40 | cleq2d 1112 |
. . . . . . . . 9
|
| 42 | sbequ12 865 |
. . . . . . . . 9
| |
| 43 | 41, 42 | anbi12d 476 |
. . . . . . . 8
|
| 44 | 36, 39, 43 | cbvex 849 |
. . . . . . 7
|
| 45 | 44 | biex 733 |
. . . . . 6
|
| 46 | 35, 45 | bitr 151 |
. . . . 5
|
| 47 | 46 | anbi2i 367 |
. . . 4
|
| 48 | 47 | biex 733 |
. . 3
|
| 49 | 24, 48 | bitr4 154 |
. 2
|
| 50 | 1, 3, 49 | 3bitr4 158 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: opabsb 2114 opelopabg 2115 dmopab |