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| Mirrors > Home > MPE Home > Th. List > fzneuz | Structured version Visualization version GIF version | ||
| Description: No finite set of sequential integers equals an upper set of integers. (Contributed by NM, 11-Dec-2005.) |
| Ref | Expression |
|---|---|
| fzneuz | ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐾 ∈ ℤ) → ¬ (𝑀...𝑁) = (ℤ≥‘𝐾)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | peano2uz 12953 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝐾) → (𝑁 + 1) ∈ (ℤ≥‘𝐾)) | |
| 2 | eluzelre 12901 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℝ) | |
| 3 | ltp1 12082 | . . . . . . . 8 ⊢ (𝑁 ∈ ℝ → 𝑁 < (𝑁 + 1)) | |
| 4 | peano2re 11410 | . . . . . . . . 9 ⊢ (𝑁 ∈ ℝ → (𝑁 + 1) ∈ ℝ) | |
| 5 | ltnle 11316 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℝ ∧ (𝑁 + 1) ∈ ℝ) → (𝑁 < (𝑁 + 1) ↔ ¬ (𝑁 + 1) ≤ 𝑁)) | |
| 6 | 4, 5 | mpdan 700 | . . . . . . . 8 ⊢ (𝑁 ∈ ℝ → (𝑁 < (𝑁 + 1) ↔ ¬ (𝑁 + 1) ≤ 𝑁)) |
| 7 | 3, 6 | mpbid 235 | . . . . . . 7 ⊢ (𝑁 ∈ ℝ → ¬ (𝑁 + 1) ≤ 𝑁) |
| 8 | 2, 7 | syl 18 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → ¬ (𝑁 + 1) ≤ 𝑁) |
| 9 | elfzle2 13585 | . . . . . 6 ⊢ ((𝑁 + 1) ∈ (𝑀...𝑁) → (𝑁 + 1) ≤ 𝑁) | |
| 10 | 8, 9 | nsyl 141 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → ¬ (𝑁 + 1) ∈ (𝑀...𝑁)) |
| 11 | 10 | ad2antrr 739 | . . . 4 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐾 ∈ ℤ) ∧ 𝑁 ∈ (ℤ≥‘𝐾)) → ¬ (𝑁 + 1) ∈ (𝑀...𝑁)) |
| 12 | nelneq2 2885 | . . . 4 ⊢ (((𝑁 + 1) ∈ (ℤ≥‘𝐾) ∧ ¬ (𝑁 + 1) ∈ (𝑀...𝑁)) → ¬ (ℤ≥‘𝐾) = (𝑀...𝑁)) | |
| 13 | 1, 11, 12 | syl2an2 699 | . . 3 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐾 ∈ ℤ) ∧ 𝑁 ∈ (ℤ≥‘𝐾)) → ¬ (ℤ≥‘𝐾) = (𝑀...𝑁)) |
| 14 | eqcom 2767 | . . 3 ⊢ ((ℤ≥‘𝐾) = (𝑀...𝑁) ↔ (𝑀...𝑁) = (ℤ≥‘𝐾)) | |
| 15 | 13, 14 | sylnib 331 | . 2 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐾 ∈ ℤ) ∧ 𝑁 ∈ (ℤ≥‘𝐾)) → ¬ (𝑀...𝑁) = (ℤ≥‘𝐾)) |
| 16 | eluzfz2 13589 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ (𝑀...𝑁)) | |
| 17 | 16 | ad2antrr 739 | . . 3 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐾 ∈ ℤ) ∧ ¬ 𝑁 ∈ (ℤ≥‘𝐾)) → 𝑁 ∈ (𝑀...𝑁)) |
| 18 | nelneq2 2885 | . . 3 ⊢ ((𝑁 ∈ (𝑀...𝑁) ∧ ¬ 𝑁 ∈ (ℤ≥‘𝐾)) → ¬ (𝑀...𝑁) = (ℤ≥‘𝐾)) | |
| 19 | 17, 18 | sylancom 600 | . 2 ⊢ (((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐾 ∈ ℤ) ∧ ¬ 𝑁 ∈ (ℤ≥‘𝐾)) → ¬ (𝑀...𝑁) = (ℤ≥‘𝐾)) |
| 20 | 15, 19 | pm2.61dan 825 | 1 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝐾 ∈ ℤ) → ¬ (𝑀...𝑁) = (ℤ≥‘𝐾)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2145 class class class wbr 5103 ‘cfv 6533 (class class class)co 7414 ℝcr 11126 1c1 11128 + caddc 11130 < clt 11270 ≤ cle 11271 ℤcz 12618 ℤ≥cuz 12890 ...cfz 13564 |
| 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 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 |
| 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 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 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7864 df-1st 7987 df-2nd 7988 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-nn 12261 df-n0 12532 df-z 12619 df-uz 12891 df-fz 13565 |
| This theorem is used by: (None) |
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