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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 12790 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 13639 | . . 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 12964 | . . . 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 13788 | . . . . . . . 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 12790 | . 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 2145 class class class wbr 5103 ‘cfv 6537 (class class class)co 7418 1c1 11194 + caddc 11196 < clt 11336 ≤ cle 11337 ℤcz 12686 ℤ≥cuz 12958 ...cfz 13632 ..^cfzo 13781 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-cnex 11249 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-om 7876 df-1st 7999 df-2nd 8000 df-frecs 8292 df-wrecs 8323 df-recs 8372 df-rdg 8411 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-nn 12329 df-n0 12600 df-z 12687 df-uz 12959 df-fz 13633 df-fzo 13782 |
| This theorem is used by: seqcaopr3 14173 seqf1olem2a 14176 prodfn0 16056 prodfrec 16057 smupval 16651 smueqlem 16653 dvntaylp 26691 taylthlem1 26693 pntpbnd1 27906 pntlemf 27925 fmul01 46561 dvnmptdivc 46917 dvnmul 46922 iblspltprt 46952 itgspltprt 46958 stoweidlem3 46982 carageniuncllem1 47500 caratheodorylem1 47505 |
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