| 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 12750 | . . . . 5 ⊢ 1 ∈ ℤ | |
| 2 | nn0z 12741 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℤ) | |
| 3 | elfz1 13668 | . . . . 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 4096 | . . . 4 ⊢ (𝑎 ∈ ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ) ↔ (𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∧ 𝑎 ∈ ℕ)) | |
| 12 | ellz1 43969 | . . . . . 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 12746 | . . . . . 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 2761 | 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 2147 ∖ cdif 4048 ∩ cin 4092 class class class wbr 5106 ‘cfv 6555 (class class class)co 7440 1c1 11225 + caddc 11227 ≤ cle 11368 ℕcn 12359 ℕ0cn0 12630 ℤcz 12717 ℤ≥cuz 12989 ...cfz 13663 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-cnex 11280 ax-resscn 11281 ax-1cn 11282 ax-icn 11283 ax-addcl 11284 ax-addrcl 11285 ax-mulcl 11286 ax-mulrcl 11287 ax-mulcom 11288 ax-addass 11289 ax-mulass 11290 ax-distr 11291 ax-i2m1 11292 ax-1ne0 11293 ax-1rid 11294 ax-rnegex 11295 ax-rrecex 11296 ax-cnre 11297 ax-pre-lttri 11298 ax-pre-lttrn 11299 ax-pre-ltadd 11300 ax-pre-mulgt0 11301 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6319 df-ord 6380 df-on 6381 df-lim 6382 df-suc 6383 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-riota 7397 df-ov 7443 df-oprab 7444 df-mpo 7445 df-om 7899 df-2nd 8023 df-frecs 8324 df-wrecs 8355 df-recs 8404 df-rdg 8443 df-er 8742 df-en 8999 df-dom 9000 df-sdom 9001 df-pnf 11369 df-mnf 11370 df-xr 11371 df-ltxr 11372 df-le 11373 df-sub 11567 df-neg 11568 df-nn 12360 df-n0 12631 df-z 12718 df-uz 12990 df-fz 13664 |
| This theorem is used by: diophin 43974 |
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