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| Description: Membership in the span of a singleton. All members are collinear with the generating vector. |
| Ref | Expression |
|---|---|
| elspansn2t |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | spansnt 5464 |
. . . . 5
| |
| 2 | 1 | eleq2d 1156 |
. . . 4
|
| 3 | 2 | adantl 305 |
. . 3
|
| 4 | 3 | 3adant3 599 |
. 2
|
| 5 | eleq1 1149 |
. . . . . . 7
| |
| 6 | id 9 |
. . . . . . . 8
| |
| 7 | opreq1 3006 |
. . . . . . . . . 10
| |
| 8 | 7 | opreq1d 3012 |
. . . . . . . . 9
|
| 9 | 8 | opreq1d 3012 |
. . . . . . . 8
|
| 10 | 6, 9 | cleq12d 1115 |
. . . . . . 7
|
| 11 | 5, 10 | bibi12d 477 |
. . . . . 6
|
| 12 | 11 | imbi2d 464 |
. . . . 5
|
| 13 | cleq1 1107 |
. . . . . . 7
| |
| 14 | 13 | negbid 463 |
. . . . . 6
|
| 15 | sneq 1816 |
. . . . . . . . . 10
| |
| 16 | 15 | fveq2d 2836 |
. . . . . . . . 9
|
| 17 | 16 | fveq2d 2836 |
. . . . . . . 8
|
| 18 | 17 | eleq2d 1156 |
. . . . . . 7
|
| 19 | opreq2 3007 |
. . . . . . . . . 10
| |
| 20 | opreq1 3006 |
. . . . . . . . . . 11
| |
| 21 | opreq2 3007 |
. . . . . . . . . . 11
| |
| 22 | 20, 21 | eqtrd 1128 |
. . . . . . . . . 10
|
| 23 | 19, 22 | opreq12d 3014 |
. . . . . . . . 9
|
| 24 | id 9 |
. . . . . . . . 9
| |
| 25 | 23, 24 | opreq12d 3014 |
. . . . . . . 8
|
| 26 | 25 | cleq2d 1112 |
. . . . . . 7
|
| 27 | 18, 26 | bibi12d 477 |
. . . . . 6
|
| 28 | 14, 27 | imbi12d 474 |
. . . . 5
|
| 29 | ax-hvzercl 4987 |
. . . . . . 7
| |
| 30 | 29 | elimel 1793 |
. . . . . 6
|
| 31 | 29 | elimel 1793 |
. . . . . 6
|
| 32 | 30, 31 | h1de2b 5459 |
. . . . 5
|
| 33 | 12, 28, 32 | dedth2h 1787 |
. . . 4
|
| 34 | 33 | imp 277 |
. . 3
|