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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fzne2d | Structured version Visualization version GIF version | ||
| Description: Elementhood in a finite set of sequential integers, except its upper bound. (Contributed by metakunt, 23-May-2024.) |
| Ref | Expression |
|---|---|
| fzne2d.1 | ⊢ (𝜑 → 𝐾 ∈ (𝑀...𝑁)) |
| fzne2d.2 | ⊢ (𝜑 → 𝐾 ≠ 𝑁) |
| Ref | Expression |
|---|---|
| fzne2d | ⊢ (𝜑 → 𝐾 < 𝑁) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fzne2d.2 | . . 3 ⊢ (𝜑 → 𝐾 ≠ 𝑁) | |
| 2 | 1 | necomd 3010 | . 2 ⊢ (𝜑 → 𝑁 ≠ 𝐾) |
| 3 | fzne2d.1 | . . . . . . 7 ⊢ (𝜑 → 𝐾 ∈ (𝑀...𝑁)) | |
| 4 | elfz2 13646 | . . . . . . 7 ⊢ (𝐾 ∈ (𝑀...𝑁) ↔ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) | |
| 5 | 3, 4 | sylib 221 | . . . . . 6 ⊢ (𝜑 → ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
| 6 | 5 | simpld 500 | . . . . 5 ⊢ (𝜑 → (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ)) |
| 7 | 6 | simp3d 1162 | . . . 4 ⊢ (𝜑 → 𝐾 ∈ ℤ) |
| 8 | 7 | zred 12803 | . . 3 ⊢ (𝜑 → 𝐾 ∈ ℝ) |
| 9 | 6 | simp2d 1161 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ ℤ) |
| 10 | 9 | zred 12803 | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℝ) |
| 11 | 5 | simprrd 786 | . . 3 ⊢ (𝜑 → 𝐾 ≤ 𝑁) |
| 12 | 8, 10, 11 | leltned 11463 | . 2 ⊢ (𝜑 → (𝐾 < 𝑁 ↔ 𝑁 ≠ 𝐾)) |
| 13 | 2, 12 | mpbird 260 | 1 ⊢ (𝜑 → 𝐾 < 𝑁) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 ∈ wcel 2144 ≠ wne 2955 class class class wbr 5102 (class class class)co 7420 < clt 11343 ≤ cle 11344 ℤcz 12693 ...cfz 13639 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-pre-lttri 11274 ax-pre-lttrn 11275 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 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-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-po 5558 df-so 5559 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-oprab 7424 df-mpo 7425 df-1st 8001 df-2nd 8002 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-neg 11544 df-z 12694 df-fz 13640 |
| This theorem is used by: (None) |
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