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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > elfzolem1 | Structured version Visualization version GIF version |
Description: A member in a half-open integer interval is less than or equal to the upper bound minus 1 . (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
Ref | Expression |
---|---|
elfzolem1 | ⊢ (𝐾 ∈ (𝑀..^𝑁) → 𝐾 ≤ (𝑁 − 1)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . 2 ⊢ (𝐾 ∈ (𝑀..^𝑁) → 𝐾 ∈ (𝑀..^𝑁)) | |
2 | elfzoel2 13717 | . 2 ⊢ (𝐾 ∈ (𝑀..^𝑁) → 𝑁 ∈ ℤ) | |
3 | simpl 482 | . . . 4 ⊢ ((𝐾 ∈ (𝑀..^𝑁) ∧ 𝑁 ∈ ℤ) → 𝐾 ∈ (𝑀..^𝑁)) | |
4 | fzoval 13719 | . . . . 5 ⊢ (𝑁 ∈ ℤ → (𝑀..^𝑁) = (𝑀...(𝑁 − 1))) | |
5 | 4 | adantl 481 | . . . 4 ⊢ ((𝐾 ∈ (𝑀..^𝑁) ∧ 𝑁 ∈ ℤ) → (𝑀..^𝑁) = (𝑀...(𝑁 − 1))) |
6 | 3, 5 | eleqtrd 2846 | . . 3 ⊢ ((𝐾 ∈ (𝑀..^𝑁) ∧ 𝑁 ∈ ℤ) → 𝐾 ∈ (𝑀...(𝑁 − 1))) |
7 | elfzle2 13590 | . . 3 ⊢ (𝐾 ∈ (𝑀...(𝑁 − 1)) → 𝐾 ≤ (𝑁 − 1)) | |
8 | 6, 7 | syl 17 | . 2 ⊢ ((𝐾 ∈ (𝑀..^𝑁) ∧ 𝑁 ∈ ℤ) → 𝐾 ≤ (𝑁 − 1)) |
9 | 1, 2, 8 | syl2anc 583 | 1 ⊢ (𝐾 ∈ (𝑀..^𝑁) → 𝐾 ≤ (𝑁 − 1)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1537 ∈ wcel 2108 class class class wbr 5166 (class class class)co 7450 1c1 11187 ≤ cle 11327 − cmin 11522 ℤcz 12641 ...cfz 13569 ..^cfzo 13713 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pr 5447 ax-un 7772 ax-cnex 11242 ax-resscn 11243 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-ral 3068 df-rex 3077 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-iun 5017 df-br 5167 df-opab 5229 df-mpt 5250 df-id 5593 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-iota 6527 df-fun 6577 df-fn 6578 df-f 6579 df-fv 6583 df-ov 7453 df-oprab 7454 df-mpo 7455 df-1st 8032 df-2nd 8033 df-neg 11525 df-z 12642 df-uz 12906 df-fz 13570 df-fzo 13714 |
This theorem is referenced by: iundjiun 46383 |
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