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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 1578 |
. 2
| |
| 2 | df-opab 2662 |
. . 3
| |
| 3 | 2 | eleq2i 1535 |
. 2
|
| 4 | 19.41v 1303 |
. . . . . 6
| |
| 5 | anass 439 |
. . . . . . 7
| |
| 6 | 5 | exbii 1049 |
. . . . . 6
|
| 7 | eqcom 1474 |
. . . . . . . 8
| |
| 8 | opex 2777 |
. . . . . . . . 9
| |
| 9 | 8 | eqvinc 1879 |
. . . . . . . 8
|
| 10 | visset 1809 |
. . . . . . . . 9
| |
| 11 | visset 1809 |
. . . . . . . . 9
| |
| 12 | visset 1809 |
. . . . . . . . 9
| |
| 13 | 10, 11, 12 | opth 2782 |
. . . . . . . 8
|
| 14 | 7, 9, 13 | 3bitr3 181 |
. . . . . . 7
|
| 15 | 14 | anbi1i 481 |
. . . . . 6
|
| 16 | 4, 6, 15 | 3bitr3r 182 |
. . . . 5
|
| 17 | 16 | 2exbii 1050 |
. . . 4
|
| 18 | sbel2x 1343 |
. . . 4
| |
| 19 | excom 1044 |
. . . . 5
| |
| 20 | exdistr2 1309 |
. . . . 5
| |
| 21 | excom 1044 |
. . . . . 6
| |
| 22 | 21 | exbii 1049 |
. . . . 5
|
| 23 | 19, 20, 22 | 3bitr3 181 |
. . . 4
|
| 24 | 17, 18, 23 | 3bitr4 183 |
. . 3
|
| 25 | ax-17 969 |
. . . . . . 7
| |
| 26 | ax-17 969 |
. . . . . . . . 9
| |
| 27 | hbs1 1330 |
. . . . . . . . 9
| |
| 28 | 26, 27 | hban 1007 |
. . . . . . . 8
|
| 29 | 28 | hbex 1004 |
. . . . . . 7
|
| 30 | opeq1 2483 |
. . . . . . . . . 10
| |
| 31 | 30 | eqeq2d 1483 |
. . . . . . . . 9
|
| 32 | sbequ12 1179 |
. . . . . . . . 9
| |
| 33 | 31, 32 | anbi12d 627 |
. . . . . . . 8
|
| 34 | 33 | exbidv 1277 |
. . . . . . 7
|
| 35 | 25, 29, 34 | cbvex 1164 |
. . . . . 6
|
| 36 | ax-17 969 |
. . . . . . . 8
| |
| 37 | ax-17 969 |
. . . . . . . . 9
| |
| 38 | hbs1 1330 |
. . . . . . . . 9
| |
| 39 | 37, 38 | hban 1007 |
. . . . . . . 8
|
| 40 | opeq2 2484 |
. . . . . . . . . 10
| |
| 41 | 40 | eqeq2d 1483 |
. . . . . . . . 9
|
| 42 | sbequ12 1179 |
. . . . . . . . 9
| |
| 43 | 41, 42 | anbi12d 627 |
. . . . . . . 8
|
| 44 | 36, 39, 43 | cbvex 1164 |
. . . . . . 7
|
| 45 | 44 | exbii 1049 |
. . . . . 6
|
| 46 | 35, 45 | bitr 173 |
. . . . 5
|
| 47 | 46 | anbi2i 480 |
. . . 4
|
| 48 | 47 | exbii 1049 |
. . 3
|
| 49 | 24, 48 | bitr4 176 |
. 2
|