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Mirrors > Home > MPE Home > Th. List > swrdccatin1d | Structured version Visualization version GIF version |
Description: The subword of a concatenation of two words within the first of the concatenated words. (Contributed by AV, 31-May-2018.) (Revised by Mario Carneiro/AV, 21-Oct-2018.) |
Ref | Expression |
---|---|
swrdccatind.l | ⊢ (𝜑 → (♯‘𝐴) = 𝐿) |
swrdccatind.w | ⊢ (𝜑 → (𝐴 ∈ Word 𝑉 ∧ 𝐵 ∈ Word 𝑉)) |
swrdccatin1d.1 | ⊢ (𝜑 → 𝑀 ∈ (0...𝑁)) |
swrdccatin1d.2 | ⊢ (𝜑 → 𝑁 ∈ (0...𝐿)) |
Ref | Expression |
---|---|
swrdccatin1d | ⊢ (𝜑 → ((𝐴 ++ 𝐵) substr 〈𝑀, 𝑁〉) = (𝐴 substr 〈𝑀, 𝑁〉)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | swrdccatind.w | . 2 ⊢ (𝜑 → (𝐴 ∈ Word 𝑉 ∧ 𝐵 ∈ Word 𝑉)) | |
2 | swrdccatin1d.1 | . . 3 ⊢ (𝜑 → 𝑀 ∈ (0...𝑁)) | |
3 | swrdccatind.l | . . . 4 ⊢ (𝜑 → (♯‘𝐴) = 𝐿) | |
4 | swrdccatin1d.2 | . . . . 5 ⊢ (𝜑 → 𝑁 ∈ (0...𝐿)) | |
5 | oveq2 7420 | . . . . . 6 ⊢ ((♯‘𝐴) = 𝐿 → (0...(♯‘𝐴)) = (0...𝐿)) | |
6 | 5 | eleq2d 2818 | . . . . 5 ⊢ ((♯‘𝐴) = 𝐿 → (𝑁 ∈ (0...(♯‘𝐴)) ↔ 𝑁 ∈ (0...𝐿))) |
7 | 4, 6 | imbitrrid 245 | . . . 4 ⊢ ((♯‘𝐴) = 𝐿 → (𝜑 → 𝑁 ∈ (0...(♯‘𝐴)))) |
8 | 3, 7 | mpcom 38 | . . 3 ⊢ (𝜑 → 𝑁 ∈ (0...(♯‘𝐴))) |
9 | 2, 8 | jca 511 | . 2 ⊢ (𝜑 → (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝐴)))) |
10 | swrdccatin1 14682 | . 2 ⊢ ((𝐴 ∈ Word 𝑉 ∧ 𝐵 ∈ Word 𝑉) → ((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝐴))) → ((𝐴 ++ 𝐵) substr 〈𝑀, 𝑁〉) = (𝐴 substr 〈𝑀, 𝑁〉))) | |
11 | 1, 9, 10 | sylc 65 | 1 ⊢ (𝜑 → ((𝐴 ++ 𝐵) substr 〈𝑀, 𝑁〉) = (𝐴 substr 〈𝑀, 𝑁〉)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2105 〈cop 4634 ‘cfv 6543 (class class class)co 7412 0cc0 11116 ...cfz 13491 ♯chash 14297 Word cword 14471 ++ cconcat 14527 substr csubstr 14597 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7729 ax-cnex 11172 ax-resscn 11173 ax-1cn 11174 ax-icn 11175 ax-addcl 11176 ax-addrcl 11177 ax-mulcl 11178 ax-mulrcl 11179 ax-mulcom 11180 ax-addass 11181 ax-mulass 11182 ax-distr 11183 ax-i2m1 11184 ax-1ne0 11185 ax-1rid 11186 ax-rnegex 11187 ax-rrecex 11188 ax-cnre 11189 ax-pre-lttri 11190 ax-pre-lttrn 11191 ax-pre-ltadd 11192 ax-pre-mulgt0 11193 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7368 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7860 df-1st 7979 df-2nd 7980 df-frecs 8272 df-wrecs 8303 df-recs 8377 df-rdg 8416 df-1o 8472 df-er 8709 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-card 9940 df-pnf 11257 df-mnf 11258 df-xr 11259 df-ltxr 11260 df-le 11261 df-sub 11453 df-neg 11454 df-nn 12220 df-n0 12480 df-z 12566 df-uz 12830 df-fz 13492 df-fzo 13635 df-hash 14298 df-word 14472 df-concat 14528 df-substr 14598 |
This theorem is referenced by: (None) |
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