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| Mirrors > Home > MPE Home > Th. List > Mathboxes > supfz | Structured version Visualization version GIF version | ||
| Description: The supremum of a finite sequence of integers. (Contributed by Scott Fenton, 8-Aug-2013.) |
| Ref | Expression |
|---|---|
| supfz | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → sup((𝑀...𝑁), ℤ, < ) = 𝑁) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zssre 12597 | . . . 4 ⊢ ℤ ⊆ ℝ | |
| 2 | ltso 11289 | . . . 4 ⊢ < Or ℝ | |
| 3 | soss 5590 | . . . 4 ⊢ (ℤ ⊆ ℝ → ( < Or ℝ → < Or ℤ)) | |
| 4 | 1, 2, 3 | mp2 9 | . . 3 ⊢ < Or ℤ |
| 5 | 4 | a1i 11 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → < Or ℤ) |
| 6 | eluzelz 12871 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℤ) | |
| 7 | eluzfz2 13559 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ (𝑀...𝑁)) | |
| 8 | elfzle2 13555 | . . . 4 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑥 ≤ 𝑁) | |
| 9 | 8 | adantl 486 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑥 ≤ 𝑁) |
| 10 | elfzelz 13551 | . . . . 5 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑥 ∈ ℤ) | |
| 11 | 10 | zred 12699 | . . . 4 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑥 ∈ ℝ) |
| 12 | eluzelre 12872 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℝ) | |
| 13 | lenlt 11287 | . . . 4 ⊢ ((𝑥 ∈ ℝ ∧ 𝑁 ∈ ℝ) → (𝑥 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑥)) | |
| 14 | 11, 12, 13 | syl2anr 608 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑥 ∈ (𝑀...𝑁)) → (𝑥 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑥)) |
| 15 | 9, 14 | mpbid 235 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑥 ∈ (𝑀...𝑁)) → ¬ 𝑁 < 𝑥) |
| 16 | 5, 6, 7, 15 | supmax 9427 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → sup((𝑀...𝑁), ℤ, < ) = 𝑁) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1567 ∈ wcel 2149 ⊆ wss 3913 class class class wbr 5113 Or wor 5569 ‘cfv 6537 (class class class)co 7411 supcsup 9399 ℝcr 11098 < clt 11242 ≤ cle 11243 ℤcz 12590 ℤ≥cuz 12861 ...cfz 13534 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11155 ax-resscn 11156 ax-pre-lttri 11173 ax-pre-lttrn 11174 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 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-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-1st 7985 df-2nd 7986 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-sup 9401 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-neg 11443 df-z 12591 df-uz 12862 df-fz 13535 |
| This theorem is referenced by: (None) |
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