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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 12597 | . . . . 5 ⊢ 1 ∈ ℤ | |
2 | nn0z 12588 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℤ) | |
3 | elfz1 13494 | . . . . 5 ⊢ ((1 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑎 ∈ (1...𝑁) ↔ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁))) | |
4 | 1, 2, 3 | sylancr 586 | . . . 4 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ (1...𝑁) ↔ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁))) |
5 | 3anass 1094 | . . . . 5 ⊢ ((𝑎 ∈ ℤ ∧ 1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁) ↔ (𝑎 ∈ ℤ ∧ (1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁))) | |
6 | ancom 460 | . . . . . 6 ⊢ ((1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁) ↔ (𝑎 ≤ 𝑁 ∧ 1 ≤ 𝑎)) | |
7 | 6 | anbi2i 622 | . . . . 5 ⊢ ((𝑎 ∈ ℤ ∧ (1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁)) ↔ (𝑎 ∈ ℤ ∧ (𝑎 ≤ 𝑁 ∧ 1 ≤ 𝑎))) |
8 | anandi 673 | . . . . 5 ⊢ ((𝑎 ∈ ℤ ∧ (𝑎 ≤ 𝑁 ∧ 1 ≤ 𝑎)) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎))) | |
9 | 5, 7, 8 | 3bitri 297 | . . . 4 ⊢ ((𝑎 ∈ ℤ ∧ 1 ≤ 𝑎 ∧ 𝑎 ≤ 𝑁) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎))) |
10 | 4, 9 | bitrdi 287 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ (1...𝑁) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎)))) |
11 | elin 3964 | . . . 4 ⊢ (𝑎 ∈ ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ) ↔ (𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∧ 𝑎 ∈ ℕ)) | |
12 | ellz1 41808 | . . . . . 6 ⊢ (𝑁 ∈ ℤ → (𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ↔ (𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁))) | |
13 | 2, 12 | syl 17 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ↔ (𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁))) |
14 | elnnz1 12593 | . . . . . 6 ⊢ (𝑎 ∈ ℕ ↔ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎)) | |
15 | 14 | a1i 11 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ ℕ ↔ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎))) |
16 | 13, 15 | anbi12d 630 | . . . 4 ⊢ (𝑁 ∈ ℕ0 → ((𝑎 ∈ (ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∧ 𝑎 ∈ ℕ) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎)))) |
17 | 11, 16 | bitrid 283 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ) ↔ ((𝑎 ∈ ℤ ∧ 𝑎 ≤ 𝑁) ∧ (𝑎 ∈ ℤ ∧ 1 ≤ 𝑎)))) |
18 | 10, 17 | bitr4d 282 | . 2 ⊢ (𝑁 ∈ ℕ0 → (𝑎 ∈ (1...𝑁) ↔ 𝑎 ∈ ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ))) |
19 | 18 | eqrdv 2729 | 1 ⊢ (𝑁 ∈ ℕ0 → (1...𝑁) = ((ℤ ∖ (ℤ≥‘(𝑁 + 1))) ∩ ℕ)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2105 ∖ cdif 3945 ∩ cin 3947 class class class wbr 5148 ‘cfv 6543 (class class class)co 7412 1c1 11114 + caddc 11116 ≤ cle 11254 ℕcn 12217 ℕ0cn0 12477 ℤcz 12563 ℤ≥cuz 12827 ...cfz 13489 |
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-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7728 ax-cnex 11169 ax-resscn 11170 ax-1cn 11171 ax-icn 11172 ax-addcl 11173 ax-addrcl 11174 ax-mulcl 11175 ax-mulrcl 11176 ax-mulcom 11177 ax-addass 11178 ax-mulass 11179 ax-distr 11180 ax-i2m1 11181 ax-1ne0 11182 ax-1rid 11183 ax-rnegex 11184 ax-rrecex 11185 ax-cnre 11186 ax-pre-lttri 11187 ax-pre-lttrn 11188 ax-pre-ltadd 11189 ax-pre-mulgt0 11190 |
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-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 7859 df-2nd 7979 df-frecs 8269 df-wrecs 8300 df-recs 8374 df-rdg 8413 df-er 8706 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11451 df-neg 11452 df-nn 12218 df-n0 12478 df-z 12564 df-uz 12828 df-fz 13490 |
This theorem is referenced by: diophin 41813 |
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