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| Description: Define a recursive
sequence builder operation that starts at an
arbitrary integer index. See seqz1 6497 and seqzp1 6498 for its initial and
successor values. Theorems seq0seqz 6492 and seq1seqz 6491 derive the
0-based |
| Ref | Expression |
|---|---|
| df-seqz |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cseqz 6481 |
. 2
| |
| 2 | vh |
. . . . 5
| |
| 3 | 2 | cv 954 |
. . . 4
|
| 4 | vx |
. . . . . . . . 9
| |
| 5 | 4 | cv 954 |
. . . . . . . 8
|
| 6 | c2nd 4075 |
. . . . . . . 8
| |
| 7 | 5, 6 | cfv 3179 |
. . . . . . 7
|
| 8 | vg |
. . . . . . . . 9
| |
| 9 | 8 | cv 954 |
. . . . . . . 8
|
| 10 | c1 5222 |
. . . . . . . . 9
| |
| 11 | c1st 4074 |
. . . . . . . . . 10
| |
| 12 | 5, 11 | cfv 3179 |
. . . . . . . . 9
|
| 13 | cmin 5279 |
. . . . . . . . 9
| |
| 14 | 10, 12, 13 | co 3960 |
. . . . . . . 8
|
| 15 | cshi 6295 |
. . . . . . . 8
| |
| 16 | 9, 14, 15 | co 3960 |
. . . . . . 7
|
| 17 | cseq1 6262 |
. . . . . . 7
| |
| 18 | 7, 16, 17 | co 3960 |
. . . . . 6
|
| 19 | 12, 10, 13 | co 3960 |
. . . . . 6
|
| 20 | 18, 19, 15 | co 3960 |
. . . . 5
|
| 21 | vk |
. . . . . . . 8
| |
| 22 | 21 | cv 954 |
. . . . . . 7
|
| 23 | cle 5282 |
. . . . . . 7
| |
| 24 | 12, 22, 23 | wbr 2616 |
. . . . . 6
|
| 25 | cz 5285 |
. . . . . 6
| |
| 26 | 24, 21, 25 | crab 1647 |
. . . . 5
|
| 27 | 20, 26 | cres 3169 |
. . . 4
|
| 28 | 3, 27 | wceq 955 |
. . 3
|
| 29 | 28, 4, 8, 2 | copab2 3961 |
. 2
|
| 30 | 1, 29 | wceq 955 |
1
|
| Colors of variables: wff set class |
| This definition is referenced by: seqzfval 6487 |