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| Description: Projection meet property. Remark of [Kalmbach] p. 66. Also Theorem 4.5(i)->(iv) of [Beran] p. 112. |
| Ref | Expression |
|---|---|
| pjidm.1 |
|
| pjidm.2 |
|
| pjsslem.1 |
|
| Ref | Expression |
|---|---|
| pjssm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pjidm.1 |
. . . . . . . 8
| |
| 2 | pjidm.2 |
. . . . . . . 8
| |
| 3 | 1, 2 | pjcli 5257 |
. . . . . . 7
|
| 4 | ssel 1502 |
. . . . . . 7
| |
| 5 | 3, 4 | mpi 44 |
. . . . . 6
|
| 6 | pjsslem.1 |
. . . . . . 7
| |
| 7 | 6, 2 | pjcli 5257 |
. . . . . 6
|
| 8 | 5, 7 | jctil 240 |
. . . . 5
|
| 9 | 6 | chshi 5132 |
. . . . . 6
|
| 10 | shsubclt 5125 |
. . . . . 6
| |
| 11 | 9, 10 | ax-mp 6 |
. . . . 5
|
| 12 | 8, 11 | syl 12 |
. . . 4
|
| 13 | 1, 6 | chsscon3 5383 |
. . . . . 6
|
| 14 | 6 | chocl 5192 |
. . . . . . . . . 10
|
| 15 | 14, 2 | pjcli 5257 |
. . . . . . . . 9
|
| 16 | ssel 1502 |
. . . . . . . . 9
| |
| 17 | 15, 16 | mpi 44 |
. . . . . . . 8
|
| 18 | 1 | chocl 5192 |
. . . . . . . . 9
|
| 19 | 18, 2 | pjcli 5257 |
. . . . . . . 8
|
| 20 | 17, 19 | jctil 240 |
. . . . . . 7
|
| 21 | 18 | chshi 5132 |
. . . . . . . 8
|
| 22 | shsubclt 5125 |
. . . . . . . 8
| |
| 23 | 21, 22 | ax-mp 6 |
. . . . . . 7
|
| 24 | 20, 23 | syl 12 |
. . . . . 6
|
| 25 | 13, 24 | sylbi 174 |
. . . . 5
|
| 26 | 1, 2, 6 | pjsslem 5570 |
. . . . . 6
|
| 27 | 26 | eleq1i 1152 |
. . . . 5
|
| 28 | 25, 27 | sylib 173 |
. . . 4
|
| 29 | 12, 28 | jca 236 |
. . 3
|
| 30 | elin 1635 |
. . . 4
| |
| 31 | 6, 18 | chincl 5382 |
. . . . 5
|
| 32 | 6, 2 | pjhcli 5258 |
. . . . . 6
|
| 33 | 1, 2 | pjhcli 5258 |
. . . . . 6
|
| 34 | 32, 33 | hvsubcl 5002 |
. . . . 5
|
| 35 | 31, 34 | pjch 5269 |
. . . 4
|
| 36 | 30, 35 | bitr3 153 |
. . 3
|
| 37 | 29, 36 | sylib 173 |
. 2
|
| 38 | 31, 32, 33 | pjsub 5569 |
. . 3
|
| 39 | 31, 32 | pjhcli 5258 |
. . . 4
|
| 40 | 31, 33 | pjhcli 5258 |
. . . 4
|
| 41 | 39, 40 | hvsubval 5001 |
. . 3
|
| 42 | inss1 1657 |
. . . . . 6
| |
| 43 | 31, 2, 6 | pjss2 5571 |
. . . . . 6
|
| 44 | 42, 43 | ax-mp 6 |
. . . . 5
|
| 45 | 1 | chshi 5132 |
. . . . . . . . . . 11
|
| 46 | shococss 5175 |
. . . . . . . . . . 11
| |
| 47 | 45, 46 | ax-mp 6 |
. . . . . . . . . 10
|
| 48 | inss2 1658 |
. . . . . . . . . . 11
| |
| 49 | 31, 18 | chsscon3 5383 |
. . . . . . . . . . 11
|
| 50 | 48, 49 | mpbi 164 |
. . . . . . . . . 10
|
| 51 | 47, 50 | sstri 1512 |
. . . . . . . . 9
|
| 52 | 51, 3 | sselii 1505 |
. . . . . . . 8
|
| 53 | 31, 33 | pjoc2 5273 |
. . . . . . . 8
|
| 54 | 52, 53 | mpbi 164 |
. . . . . . 7
|
| 55 | 54 | opreq2i 3010 |
. . . . . 6
|