| Mathbox for Stefan O'Rear |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fz1eqin | Structured version Visualization version GIF version | ||
| Description: Express a one-based finite range as the intersection of lower integers with ℕ. (Contributed by Stefan O'Rear, 9-Oct-2014.) |
| Ref | Expression |
|---|---|
| fz1eqin | ⊢ (𝑁 ∈ ℕ0 → (1...𝑁) = ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1z 12681 | . . . . 5 ⊢ 1 ∈ ℤ | |
| 2 | nn0z 12672 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℤ) | |
| 3 | elfz1 13599 | . . . . 5 ⊢ ((1 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑎 ∈ (1...𝑁) ↔ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁))) | |
| 4 | 1, 2, 3 | sylancr 599 | . . . 4 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ (1...𝑁) ↔ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁))) |
| 5 | 3anass 1111 | . . . . 5 ⊢ ((𝑎 ∈ ℤ ∧ 1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁) ↔ (𝑎 ∈ ℤ ∧ (1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁))) | |
| 6 | ancom 466 | . . . . . 6 ⊢ ((1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁) ↔ (𝑎 ≤ 𝑁 ∧ 1 ≤ 𝑎)) | |
| 7 | 6 | anbi2i 635 | . . . . 5 ⊢ ((𝑎 ∈ ℤ ∧ (1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁)) ↔ (𝑎 ∈ ℤ ∧ (𝑎 ≤ 𝑁 ∧ 1 ≤ 𝑎))) |
| 8 | anandi 689 | . . . . 5 ⊢ ((𝑎 ∈ ℤ ∧ (𝑎 ≤ 𝑁 ∧ 1 ≤ 𝑎)) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎))) | |
| 9 | 5, 7, 8 | 3bitri 300 | . . . 4 ⊢ ((𝑎 ∈ ℤ ∧ 1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎))) |
| 10 | 4, 9 | bitrdi 290 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ (1...𝑁) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎)))) |
| 11 | elin 3915 | . . . 4 ⊢ (𝑎 ∈ ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ) ↔ (𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∧ 𝑎 ∈ ℕ)) | |
| 12 | ellz1 43710 | . . . . . 6 ⊢ (𝑁 ∈ ℤ → (𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ↔ (𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁))) | |
| 13 | 2, 12 | syl 18 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ↔ (𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁))) |
| 14 | elnnz1 12677 | . . . . . 6 ⊢ (𝑎 ∈ ℕ ↔ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎)) | |
| 15 | 14 | a1i 11 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ ℕ ↔ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎))) |
| 16 | 13, 15 | anbi12d 644 | . . . 4 ⊢ (𝑁 ∈ ℕ0 → ((𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∧ 𝑎 ∈ ℕ) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎)))) |
| 17 | 11, 16 | bitrid 286 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎)))) |
| 18 | 10, 17 | bitr4d 285 | . 2 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ (1...𝑁) ↔ 𝑎 ∈ ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ))) |
| 19 | 18 | eqrdv 2758 | 1 ⊢ (𝑁 ∈ ℕ0 → (1...𝑁) = ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 ∖ cdif 3896 ∩ cin 3898 class class class wbr 5103 ‘cfv 6528 (class class class)co 7409 1c1 11158 + caddc 11160 ≤ cle 11301 ℕcn 12290 ℕ0cn0 12561 ℤcz 12648 ℤ≥cuz 12920 ...cfz 13594 |
| 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 2732 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7735 ax-cnex 11213 ax-resscn 11214 ax-1cn 11215 ax-icn 11216 ax-addcl 11217 ax-addrcl 11218 ax-mulcl 11219 ax-mulrcl 11220 ax-mulcom 11221 ax-addass 11222 ax-mulass 11223 ax-distr 11224 ax-i2m1 11225 ax-1ne0 11226 ax-1rid 11227 ax-rnegex 11228 ax-rrecex 11229 ax-cnre 11230 ax-pre-lttri 11231 ax-pre-lttrn 11232 ax-pre-ltadd 11233 ax-pre-mulgt0 11234 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 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 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6294 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6530 df-fn 6531 df-f 6532 df-f1 6533 df-fo 6534 df-f1o 6535 df-fv 6536 df-riota 7366 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7862 df-2nd 7986 df-frecs 8278 df-wrecs 8309 df-recs 8358 df-rdg 8397 df-er 8696 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11302 df-mnf 11303 df-xr 11304 df-ltxr 11305 df-le 11306 df-sub 11500 df-neg 11501 df-nn 12291 df-n0 12562 df-z 12649 df-uz 12921 df-fz 13595 |
| This theorem is used by: diophin 43715 |
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