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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 3012 | . 2 ⊢ (𝜑 → 𝑁 ≠ 𝐾) |
| 3 | fzne2d.1 | . . . . . . 7 ⊢ (𝜑 → 𝐾 ∈ (𝑀...𝑁)) | |
| 4 | elfz2 13570 | . . . . . . 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 12728 | . . 3 ⊢ (𝜑 → 𝐾 ∈ ℝ) |
| 9 | 6 | simp2d 1161 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ ℤ) |
| 10 | 9 | zred 12728 | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℝ) |
| 11 | 5 | simprrd 786 | . . 3 ⊢ (𝜑 → 𝐾 ≤ 𝑁) |
| 12 | 8, 10, 11 | leltned 11390 | . 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 2145 ≠ wne 2957 class class class wbr 5107 (class class class)co 7416 < clt 11270 ≤ cle 11271 ℤcz 12618 ...cfz 13563 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-cnex 11183 ax-resscn 11184 ax-pre-lttri 11201 ax-pre-lttrn 11202 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-po 5567 df-so 5568 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7419 df-oprab 7420 df-mpo 7421 df-1st 7989 df-2nd 7990 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-neg 11471 df-z 12619 df-fz 13564 |
| This theorem is used by: (None) |
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