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| Mirrors > Home > MPE Home > Th. List > fzind2 | Structured version Visualization version GIF version | ||
| Description: Induction on the integers from 𝑀 to 𝑁 inclusive. The first four hypotheses give us the substitution instances we need; the last two are the basis and the induction step. Version of fzind 12710 using integer range definitions. (Contributed by Mario Carneiro, 6-Feb-2016.) |
| Ref | Expression |
|---|---|
| fzind2.1 | ⊢ (𝑥 = 𝑀 → (𝜑 ↔ 𝜓)) |
| fzind2.2 | ⊢ (𝑥 = 𝑦 → (𝜑 ↔ 𝜒)) |
| fzind2.3 | ⊢ (𝑥 = (𝑦 + 1) → (𝜑 ↔ 𝜃)) |
| fzind2.4 | ⊢ (𝑥 = 𝐾 → (𝜑 ↔ 𝜏)) |
| fzind2.5 | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝜓) |
| fzind2.6 | ⊢ (𝑦 ∈ (𝑀..^𝑁) → (𝜒 → 𝜃)) |
| Ref | Expression |
|---|---|
| fzind2 | ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝜏) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfz2 13558 | . . 3 ⊢ (𝐾 ∈ (𝑀...𝑁) ↔ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) | |
| 2 | anass 474 | . . . 4 ⊢ ((((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝐾 ∈ ℤ) ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁)) ↔ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∈ ℤ ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁)))) | |
| 3 | df-3an 1105 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ↔ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝐾 ∈ ℤ)) | |
| 4 | 3 | anbi1i 636 | . . . 4 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁)) ↔ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝐾 ∈ ℤ) ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
| 5 | 3anass 1111 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁) ↔ (𝐾 ∈ ℤ ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) | |
| 6 | 5 | anbi2i 635 | . . . 4 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁)) ↔ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∈ ℤ ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁)))) |
| 7 | 2, 4, 6 | 3bitr4i 306 | . . 3 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁)) ↔ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
| 8 | 1, 7 | bitri 278 | . 2 ⊢ (𝐾 ∈ (𝑀...𝑁) ↔ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
| 9 | fzind2.1 | . . 3 ⊢ (𝑥 = 𝑀 → (𝜑 ↔ 𝜓)) | |
| 10 | fzind2.2 | . . 3 ⊢ (𝑥 = 𝑦 → (𝜑 ↔ 𝜒)) | |
| 11 | fzind2.3 | . . 3 ⊢ (𝑥 = (𝑦 + 1) → (𝜑 ↔ 𝜃)) | |
| 12 | fzind2.4 | . . 3 ⊢ (𝑥 = 𝐾 → (𝜑 ↔ 𝜏)) | |
| 13 | eluz2 12884 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁)) | |
| 14 | fzind2.5 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝜓) | |
| 15 | 13, 14 | sylbir 238 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁) → 𝜓) |
| 16 | 3anass 1111 | . . . 4 ⊢ ((𝑦 ∈ ℤ ∧ 𝑀 ≤ 𝑦 ∧ 𝑦 < 𝑁) ↔ (𝑦 ∈ ℤ ∧ (𝑀 ≤ 𝑦 ∧ 𝑦 < 𝑁))) | |
| 17 | elfzo 13706 | . . . . . . . 8 ⊢ ((𝑦 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑦 ∈ (𝑀..^𝑁) ↔ (𝑀 ≤ 𝑦 ∧ 𝑦 < 𝑁))) | |
| 18 | fzind2.6 | . . . . . . . 8 ⊢ (𝑦 ∈ (𝑀..^𝑁) → (𝜒 → 𝜃)) | |
| 19 | 17, 18 | biimtrrdi 257 | . . . . . . 7 ⊢ ((𝑦 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀 ≤ 𝑦 ∧ 𝑦 < 𝑁) → (𝜒 → 𝜃))) |
| 20 | 19 | 3coml 1145 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑦 ∈ ℤ) → ((𝑀 ≤ 𝑦 ∧ 𝑦 < 𝑁) → (𝜒 → 𝜃))) |
| 21 | 20 | 3expa 1136 | . . . . 5 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑦 ∈ ℤ) → ((𝑀 ≤ 𝑦 ∧ 𝑦 < 𝑁) → (𝜒 → 𝜃))) |
| 22 | 21 | impr 460 | . . . 4 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑦 ∈ ℤ ∧ (𝑀 ≤ 𝑦 ∧ 𝑦 < 𝑁))) → (𝜒 → 𝜃)) |
| 23 | 16, 22 | sylan2b 606 | . . 3 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑦 ∈ ℤ ∧ 𝑀 ≤ 𝑦 ∧ 𝑦 < 𝑁)) → (𝜒 → 𝜃)) |
| 24 | 9, 10, 11, 12, 15, 23 | fzind 12710 | . 2 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁)) → 𝜏) |
| 25 | 8, 24 | sylbi 220 | 1 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝜏) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 class class class wbr 5111 ‘cfv 6540 (class class class)co 7419 1c1 11116 + caddc 11118 < clt 11258 ≤ cle 11259 ℤcz 12606 ℤ≥cuz 12878 ...cfz 13551 ..^cfzo 13699 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-cnex 11171 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-addrcl 11176 ax-mulcl 11177 ax-mulrcl 11178 ax-mulcom 11179 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-i2m1 11183 ax-1ne0 11184 ax-1rid 11185 ax-rnegex 11186 ax-rrecex 11187 ax-cnre 11188 ax-pre-lttri 11189 ax-pre-lttrn 11190 ax-pre-ltadd 11191 ax-pre-mulgt0 11192 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7869 df-1st 7992 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-pnf 11260 df-mnf 11261 df-xr 11262 df-ltxr 11263 df-le 11264 df-sub 11458 df-neg 11459 df-nn 12249 df-n0 12520 df-z 12607 df-uz 12879 df-fz 13552 df-fzo 13700 |
| This theorem is used by: seqcaopr3 14091 seqf1olem2a 14094 prodfn0 15971 prodfrec 15972 smupval 16568 smueqlem 16570 dvntaylp 26585 taylthlem1 26587 pntpbnd1 27801 pntlemf 27820 fmul01 46354 dvnmptdivc 46710 dvnmul 46715 iblspltprt 46745 itgspltprt 46751 stoweidlem3 46775 carageniuncllem1 47293 caratheodorylem1 47298 |
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