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| Mirrors > Home > MPE Home > Th. List > fznn0sub2 | Structured version Visualization version GIF version | ||
| Description: Subtraction closure for a member of a finite set of sequential nonnegative integers. (Contributed by NM, 26-Sep-2005.) (Revised by Mario Carneiro, 28-Apr-2015.) |
| Ref | Expression |
|---|---|
| fznn0sub2 | ⊢ (𝐾 ∈ (0...𝑁) → (𝑁 − 𝐾) ∈ (0...𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfzle1 13684 | . . 3 ⊢ (𝐾 ∈ (0...𝑁) → 0 ≤ 𝐾) | |
| 2 | elfzel2 13678 | . . . 4 ⊢ (𝐾 ∈ (0...𝑁) → 𝑁 ∈ ℤ) | |
| 3 | elfzelz 13680 | . . . 4 ⊢ (𝐾 ∈ (0...𝑁) → 𝐾 ∈ ℤ) | |
| 4 | zre 12721 | . . . . 5 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℝ) | |
| 5 | zre 12721 | . . . . 5 ⊢ (𝐾 ∈ ℤ → 𝐾 ∈ ℝ) | |
| 6 | subge02 11856 | . . . . 5 ⊢ ((𝑁 ∈ ℝ ∧ 𝐾 ∈ ℝ) → (0 ≤ 𝐾 ↔ (𝑁 − 𝐾) ≤ 𝑁)) | |
| 7 | 4, 5, 6 | syl2an 608 | . . . 4 ⊢ ((𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (0 ≤ 𝐾 ↔ (𝑁 − 𝐾) ≤ 𝑁)) |
| 8 | 2, 3, 7 | syl2anc 596 | . . 3 ⊢ (𝐾 ∈ (0...𝑁) → (0 ≤ 𝐾 ↔ (𝑁 − 𝐾) ≤ 𝑁)) |
| 9 | 1, 8 | mpbid 235 | . 2 ⊢ (𝐾 ∈ (0...𝑁) → (𝑁 − 𝐾) ≤ 𝑁) |
| 10 | fznn0sub 13714 | . . . 4 ⊢ (𝐾 ∈ (0...𝑁) → (𝑁 − 𝐾) ∈ ℕ0) | |
| 11 | nn0uz 13027 | . . . 4 ⊢ ℕ0 = (ℤ≥‘0) | |
| 12 | 10, 11 | eleqtrdi 2874 | . . 3 ⊢ (𝐾 ∈ (0...𝑁) → (𝑁 − 𝐾) ∈ (ℤ≥‘0)) |
| 13 | elfz5 13672 | . . 3 ⊢ (((𝑁 − 𝐾) ∈ (ℤ≥‘0) ∧ 𝑁 ∈ ℤ) → ((𝑁 − 𝐾) ∈ (0...𝑁) ↔ (𝑁 − 𝐾) ≤ 𝑁)) | |
| 14 | 12, 2, 13 | syl2anc 596 | . 2 ⊢ (𝐾 ∈ (0...𝑁) → ((𝑁 − 𝐾) ∈ (0...𝑁) ↔ (𝑁 − 𝐾) ≤ 𝑁)) |
| 15 | 9, 14 | mpbird 260 | 1 ⊢ (𝐾 ∈ (0...𝑁) → (𝑁 − 𝐾) ∈ (0...𝑁)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∈ wcel 2147 class class class wbr 5106 ‘cfv 6555 (class class class)co 7440 ℝcr 11223 0cc0 11224 ≤ cle 11368 − cmin 11565 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-1st 8022 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: uzsubfz0 13794 bccmpl 14477 pfxlswccat 14887 revcl 14935 revlen 14936 revccat 14940 revrev 14941 revpfxsfxrev 14942 swrdrevpfx 14943 2cshwcshw 15001 cshwcshid 15003 revco 15010 fsum0diag2 15975 mertenslem1 16079 cshwshashlem2 17300 taylthlem2 26728 birthdaylem2 27307 basellem3 27437 swrdwlk 30295 eleclclwwlknlem2 30679 gsummptrev 33684 selvply1rhmlemb 34218 vietalem 34278 vieta 34279 signstfveq0 35273 dvnprodlem2 47160 ply1mulgsumlem2 49702 |
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