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Mirrors > Home > MPE Home > Th. List > Mathboxes > knoppndvlem1 | Structured version Visualization version GIF version |
Description: Lemma for knoppndv 33986. (Contributed by Asger C. Ipsen, 15-Jun-2021.) (Revised by Asger C. Ipsen, 5-Jul-2021.) |
Ref | Expression |
---|---|
knoppndvlem1.n | ⊢ (𝜑 → 𝑁 ∈ ℕ) |
knoppndvlem1.j | ⊢ (𝜑 → 𝐽 ∈ ℤ) |
knoppndvlem1.m | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
Ref | Expression |
---|---|
knoppndvlem1 | ⊢ (𝜑 → ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀) ∈ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2re 11699 | . . . . . 6 ⊢ 2 ∈ ℝ | |
2 | 1 | a1i 11 | . . . . 5 ⊢ (𝜑 → 2 ∈ ℝ) |
3 | knoppndvlem1.n | . . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
4 | nnz 11992 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ) | |
5 | 3, 4 | syl 17 | . . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℤ) |
6 | 5 | zred 12075 | . . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℝ) |
7 | 2, 6 | remulcld 10660 | . . . 4 ⊢ (𝜑 → (2 · 𝑁) ∈ ℝ) |
8 | 2 | recnd 10658 | . . . . 5 ⊢ (𝜑 → 2 ∈ ℂ) |
9 | 6 | recnd 10658 | . . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℂ) |
10 | 2ne0 11729 | . . . . . 6 ⊢ 2 ≠ 0 | |
11 | 10 | a1i 11 | . . . . 5 ⊢ (𝜑 → 2 ≠ 0) |
12 | 0red 10633 | . . . . . . 7 ⊢ (𝜑 → 0 ∈ ℝ) | |
13 | 1red 10631 | . . . . . . . 8 ⊢ (𝜑 → 1 ∈ ℝ) | |
14 | 0lt1 11151 | . . . . . . . . 9 ⊢ 0 < 1 | |
15 | 14 | a1i 11 | . . . . . . . 8 ⊢ (𝜑 → 0 < 1) |
16 | nnge1 11653 | . . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → 1 ≤ 𝑁) | |
17 | 3, 16 | syl 17 | . . . . . . . 8 ⊢ (𝜑 → 1 ≤ 𝑁) |
18 | 12, 13, 6, 15, 17 | ltletrd 10789 | . . . . . . 7 ⊢ (𝜑 → 0 < 𝑁) |
19 | 12, 18 | ltned 10765 | . . . . . 6 ⊢ (𝜑 → 0 ≠ 𝑁) |
20 | 19 | necomd 3042 | . . . . 5 ⊢ (𝜑 → 𝑁 ≠ 0) |
21 | 8, 9, 11, 20 | mulne0d 11281 | . . . 4 ⊢ (𝜑 → (2 · 𝑁) ≠ 0) |
22 | knoppndvlem1.j | . . . . 5 ⊢ (𝜑 → 𝐽 ∈ ℤ) | |
23 | 22 | znegcld 12077 | . . . 4 ⊢ (𝜑 → -𝐽 ∈ ℤ) |
24 | 7, 21, 23 | reexpclzd 13606 | . . 3 ⊢ (𝜑 → ((2 · 𝑁)↑-𝐽) ∈ ℝ) |
25 | 24, 2, 11 | redivcld 11457 | . 2 ⊢ (𝜑 → (((2 · 𝑁)↑-𝐽) / 2) ∈ ℝ) |
26 | knoppndvlem1.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
27 | 26 | zred 12075 | . 2 ⊢ (𝜑 → 𝑀 ∈ ℝ) |
28 | 25, 27 | remulcld 10660 | 1 ⊢ (𝜑 → ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀) ∈ ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2111 ≠ wne 2987 class class class wbr 5030 (class class class)co 7135 ℝcr 10525 0cc0 10526 1c1 10527 · cmul 10531 < clt 10664 ≤ cle 10665 -cneg 10860 / cdiv 11286 ℕcn 11625 2c2 11680 ℤcz 11969 ↑cexp 13425 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-div 11287 df-nn 11626 df-2 11688 df-n0 11886 df-z 11970 df-uz 12232 df-seq 13365 df-exp 13426 |
This theorem is referenced by: knoppndvlem6 33969 knoppndvlem7 33970 knoppndvlem10 33973 knoppndvlem14 33977 knoppndvlem15 33978 knoppndvlem17 33980 |
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