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| Mirrors > Home > ILE Home > Th. List > iinin2m | Unicode version | ||
| Description: Indexed intersection of intersection. Compare to Theorem "Distributive laws" in [Enderton] p. 30. (Contributed by Jim Kingdon, 17-Aug-2018.) |
| Ref | Expression |
|---|---|
| iinin2m |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | r19.28mv 3553 |
. . . 4
| |
| 2 | elin 3356 |
. . . . 5
| |
| 3 | 2 | ralbii 2512 |
. . . 4
|
| 4 | vex 2775 |
. . . . . 6
| |
| 5 | eliin 3932 |
. . . . . 6
| |
| 6 | 4, 5 | ax-mp 5 |
. . . . 5
|
| 7 | 6 | anbi2i 457 |
. . . 4
|
| 8 | 1, 3, 7 | 3bitr4g 223 |
. . 3
|
| 9 | eliin 3932 |
. . . 4
| |
| 10 | 4, 9 | ax-mp 5 |
. . 3
|
| 11 | elin 3356 |
. . 3
| |
| 12 | 8, 10, 11 | 3bitr4g 223 |
. 2
|
| 13 | 12 | eqrdv 2203 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-ext 2187 |
| This theorem depends on definitions: df-bi 117 df-tru 1376 df-nf 1484 df-sb 1786 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ral 2489 df-v 2774 df-in 3172 df-iin 3930 |
| This theorem is referenced by: iinin1m 3997 |
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