| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > bm2.5ii | Unicode version | ||
| Description: Problem 2.5(ii) of [BellMachover] p. 471. (Contributed by NM, 20-Sep-2003.) |
| Ref | Expression |
|---|---|
| bm2.5ii.1 |
|
| Ref | Expression |
|---|---|
| bm2.5ii |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bm2.5ii.1 |
. . 3
| |
| 2 | 1 | ssonunii 4525 |
. 2
|
| 3 | intmin 3894 |
. . 3
| |
| 4 | unissb 3869 |
. . . . . 6
| |
| 5 | 4 | a1i 9 |
. . . . 5
|
| 6 | 5 | rabbiia 2748 |
. . . 4
|
| 7 | 6 | inteqi 3878 |
. . 3
|
| 8 | 3, 7 | eqtr3di 2244 |
. 2
|
| 9 | 2, 8 | syl 14 |
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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-un 4468 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-in 3163 df-ss 3170 df-uni 3840 df-int 3875 df-tr 4132 df-iord 4401 df-on 4403 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |