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| Mirrors > Home > ILE Home > Th. List > swrds1 | Unicode version | ||
| Description: Extract a single symbol from a word. (Contributed by Stefan O'Rear, 23-Aug-2015.) |
| Ref | Expression |
|---|---|
| swrds1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 109 |
. . . 4
| |
| 2 | elfzoelz 10503 |
. . . . 5
| |
| 3 | 2 | adantl 277 |
. . . 4
|
| 4 | 3 | peano2zd 9721 |
. . . 4
|
| 5 | swrdclg 11367 |
. . . 4
| |
| 6 | 1, 3, 4, 5 | syl3anc 1274 |
. . 3
|
| 7 | elfzouz 10507 |
. . . . . . 7
| |
| 8 | 7 | adantl 277 |
. . . . . 6
|
| 9 | uzid 9886 |
. . . . . . 7
| |
| 10 | peano2uz 9933 |
. . . . . . 7
| |
| 11 | 3, 9, 10 | 3syl 17 |
. . . . . 6
|
| 12 | elfzuzb 10372 |
. . . . . 6
| |
| 13 | 8, 11, 12 | sylanbrc 417 |
. . . . 5
|
| 14 | fzofzp1 10594 |
. . . . . 6
| |
| 15 | 14 | adantl 277 |
. . . . 5
|
| 16 | swrdlen 11369 |
. . . . 5
| |
| 17 | 1, 13, 15, 16 | syl3anc 1274 |
. . . 4
|
| 18 | 3 | zcnd 9719 |
. . . . 5
|
| 19 | ax-1cn 8236 |
. . . . 5
| |
| 20 | pncan2 8496 |
. . . . 5
| |
| 21 | 18, 19, 20 | sylancl 413 |
. . . 4
|
| 22 | 17, 21 | eqtrd 2267 |
. . 3
|
| 23 | eqs1 11341 |
. . 3
| |
| 24 | 6, 22, 23 | syl2anc 411 |
. 2
|
| 25 | 0z 9605 |
. . . . . . 7
| |
| 26 | snidg 3723 |
. . . . . . 7
| |
| 27 | 25, 26 | ax-mp 5 |
. . . . . 6
|
| 28 | 21 | oveq2d 6074 |
. . . . . . 7
|
| 29 | fzo01 10583 |
. . . . . . 7
| |
| 30 | 28, 29 | eqtrdi 2283 |
. . . . . 6
|
| 31 | 27, 30 | eleqtrrid 2324 |
. . . . 5
|
| 32 | swrdfv 11370 |
. . . . 5
| |
| 33 | 1, 13, 15, 31, 32 | syl31anc 1277 |
. . . 4
|
| 34 | addlid 8428 |
. . . . . . 7
| |
| 35 | 34 | eqcomd 2240 |
. . . . . 6
|
| 36 | 18, 35 | syl 14 |
. . . . 5
|
| 37 | 36 | fveq2d 5679 |
. . . 4
|
| 38 | 33, 37 | eqtr4d 2270 |
. . 3
|
| 39 | 38 | s1eqd 11333 |
. 2
|
| 40 | 24, 39 | eqtrd 2267 |
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-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-coll 4230 ax-sep 4233 ax-nul 4241 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-iinf 4715 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-addcom 8243 ax-addass 8245 ax-distr 8247 ax-i2m1 8248 ax-0lt1 8249 ax-0id 8251 ax-rnegex 8252 ax-cnre 8254 ax-pre-ltirr 8255 ax-pre-ltwlin 8256 ax-pre-lttrn 8257 ax-pre-apti 8258 ax-pre-ltadd 8259 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-if 3625 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-iun 3998 df-br 4115 df-opab 4177 df-mpt 4178 df-tr 4214 df-id 4419 df-iord 4492 df-on 4494 df-ilim 4495 df-suc 4497 df-iom 4718 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-f1 5362 df-fo 5363 df-f1o 5364 df-fv 5365 df-riota 6011 df-ov 6061 df-oprab 6062 df-mpo 6063 df-1st 6347 df-2nd 6348 df-recs 6549 df-frec 6635 df-1o 6660 df-er 6780 df-en 6989 df-dom 6990 df-fin 6991 df-pnf 8326 df-mnf 8327 df-xr 8328 df-ltxr 8329 df-le 8330 df-sub 8462 df-neg 8463 df-inn 9255 df-n0 9514 df-z 9595 df-uz 9872 df-fz 10362 df-fzo 10499 df-ihash 11164 df-word 11250 df-s1 11329 df-substr 11363 |
| This theorem is referenced by: swrdlsw 11386 pfx1 11420 |
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