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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 12467 | . . . 4 ⊢ ℤ ⊆ ℝ | |
| 2 | ltso 11185 | . . . 4 ⊢ < Or ℝ | |
| 3 | soss 5542 | . . . 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 12734 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℤ) | |
| 7 | eluzfz2 13424 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ (𝑀...𝑁)) | |
| 8 | elfzle2 13420 | . . . 4 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑥 ≤ 𝑁) | |
| 9 | 8 | adantl 481 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑥 ≤ 𝑁) |
| 10 | elfzelz 13416 | . . . . 5 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑥 ∈ ℤ) | |
| 11 | 10 | zred 12569 | . . . 4 ⊢ (𝑥 ∈ (𝑀...𝑁) → 𝑥 ∈ ℝ) |
| 12 | eluzelre 12735 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℝ) | |
| 13 | lenlt 11183 | . . . 4 ⊢ ((𝑥 ∈ ℝ ∧ 𝑁 ∈ ℝ) → (𝑥 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑥)) | |
| 14 | 11, 12, 13 | syl2anr 597 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑥 ∈ (𝑀...𝑁)) → (𝑥 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑥)) |
| 15 | 9, 14 | mpbid 232 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑥 ∈ (𝑀...𝑁)) → ¬ 𝑁 < 𝑥) |
| 16 | 5, 6, 7, 15 | supmax 9347 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → sup((𝑀...𝑁), ℤ, < ) = 𝑁) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1541 ∈ wcel 2110 ⊆ wss 3900 class class class wbr 5089 Or wor 5521 ‘cfv 6477 (class class class)co 7341 supcsup 9319 ℝcr 10997 < clt 11138 ≤ cle 11139 ℤcz 12460 ℤ≥cuz 12724 ...cfz 13399 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2112 ax-9 2120 ax-10 2143 ax-11 2159 ax-12 2179 ax-ext 2702 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7663 ax-cnex 11054 ax-resscn 11055 ax-pre-lttri 11072 ax-pre-lttrn 11073 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3344 df-reu 3345 df-rab 3394 df-v 3436 df-sbc 3740 df-csb 3849 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-nul 4282 df-if 4474 df-pw 4550 df-sn 4575 df-pr 4577 df-op 4581 df-uni 4858 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-id 5509 df-po 5522 df-so 5523 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-iota 6433 df-fun 6479 df-fn 6480 df-f 6481 df-f1 6482 df-fo 6483 df-f1o 6484 df-fv 6485 df-riota 7298 df-ov 7344 df-oprab 7345 df-mpo 7346 df-1st 7916 df-2nd 7917 df-er 8617 df-en 8865 df-dom 8866 df-sdom 8867 df-sup 9321 df-pnf 11140 df-mnf 11141 df-xr 11142 df-ltxr 11143 df-le 11144 df-neg 11339 df-z 12461 df-uz 12725 df-fz 13400 |
| This theorem is referenced by: (None) |
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