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Mirrors > Home > MPE Home > Th. List > Mathboxes > knoppndvlem1 | Structured version Visualization version GIF version |
Description: Lemma for knoppndv 36517. (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 12338 | . . . . . 6 ⊢ 2 ∈ ℝ | |
2 | 1 | a1i 11 | . . . . 5 ⊢ (𝜑 → 2 ∈ ℝ) |
3 | knoppndvlem1.n | . . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
4 | nnz 12632 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ) | |
5 | 3, 4 | syl 17 | . . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℤ) |
6 | 5 | zred 12720 | . . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℝ) |
7 | 2, 6 | remulcld 11289 | . . . 4 ⊢ (𝜑 → (2 · 𝑁) ∈ ℝ) |
8 | 2 | recnd 11287 | . . . . 5 ⊢ (𝜑 → 2 ∈ ℂ) |
9 | 6 | recnd 11287 | . . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℂ) |
10 | 2ne0 12368 | . . . . . 6 ⊢ 2 ≠ 0 | |
11 | 10 | a1i 11 | . . . . 5 ⊢ (𝜑 → 2 ≠ 0) |
12 | 0red 11262 | . . . . . . 7 ⊢ (𝜑 → 0 ∈ ℝ) | |
13 | 1red 11260 | . . . . . . . 8 ⊢ (𝜑 → 1 ∈ ℝ) | |
14 | 0lt1 11783 | . . . . . . . . 9 ⊢ 0 < 1 | |
15 | 14 | a1i 11 | . . . . . . . 8 ⊢ (𝜑 → 0 < 1) |
16 | nnge1 12292 | . . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → 1 ≤ 𝑁) | |
17 | 3, 16 | syl 17 | . . . . . . . 8 ⊢ (𝜑 → 1 ≤ 𝑁) |
18 | 12, 13, 6, 15, 17 | ltletrd 11419 | . . . . . . 7 ⊢ (𝜑 → 0 < 𝑁) |
19 | 12, 18 | ltned 11395 | . . . . . 6 ⊢ (𝜑 → 0 ≠ 𝑁) |
20 | 19 | necomd 2994 | . . . . 5 ⊢ (𝜑 → 𝑁 ≠ 0) |
21 | 8, 9, 11, 20 | mulne0d 11913 | . . . 4 ⊢ (𝜑 → (2 · 𝑁) ≠ 0) |
22 | knoppndvlem1.j | . . . . 5 ⊢ (𝜑 → 𝐽 ∈ ℤ) | |
23 | 22 | znegcld 12722 | . . . 4 ⊢ (𝜑 → -𝐽 ∈ ℤ) |
24 | 7, 21, 23 | reexpclzd 14285 | . . 3 ⊢ (𝜑 → ((2 · 𝑁)↑-𝐽) ∈ ℝ) |
25 | 24, 2, 11 | redivcld 12093 | . 2 ⊢ (𝜑 → (((2 · 𝑁)↑-𝐽) / 2) ∈ ℝ) |
26 | knoppndvlem1.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
27 | 26 | zred 12720 | . 2 ⊢ (𝜑 → 𝑀 ∈ ℝ) |
28 | 25, 27 | remulcld 11289 | 1 ⊢ (𝜑 → ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀) ∈ ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2106 ≠ wne 2938 class class class wbr 5148 (class class class)co 7431 ℝcr 11152 0cc0 11153 1c1 11154 · cmul 11158 < clt 11293 ≤ cle 11294 -cneg 11491 / cdiv 11918 ℕcn 12264 2c2 12319 ℤcz 12611 ↑cexp 14099 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 ax-cnex 11209 ax-resscn 11210 ax-1cn 11211 ax-icn 11212 ax-addcl 11213 ax-addrcl 11214 ax-mulcl 11215 ax-mulrcl 11216 ax-mulcom 11217 ax-addass 11218 ax-mulass 11219 ax-distr 11220 ax-i2m1 11221 ax-1ne0 11222 ax-1rid 11223 ax-rnegex 11224 ax-rrecex 11225 ax-cnre 11226 ax-pre-lttri 11227 ax-pre-lttrn 11228 ax-pre-ltadd 11229 ax-pre-mulgt0 11230 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3378 df-reu 3379 df-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-pss 3983 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5583 df-eprel 5589 df-po 5597 df-so 5598 df-fr 5641 df-we 5643 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-pred 6323 df-ord 6389 df-on 6390 df-lim 6391 df-suc 6392 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-f1 6568 df-fo 6569 df-f1o 6570 df-fv 6571 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-2nd 8014 df-frecs 8305 df-wrecs 8336 df-recs 8410 df-rdg 8449 df-er 8744 df-en 8985 df-dom 8986 df-sdom 8987 df-pnf 11295 df-mnf 11296 df-xr 11297 df-ltxr 11298 df-le 11299 df-sub 11492 df-neg 11493 df-div 11919 df-nn 12265 df-2 12327 df-n0 12525 df-z 12612 df-uz 12877 df-seq 14040 df-exp 14100 |
This theorem is referenced by: knoppndvlem6 36500 knoppndvlem7 36501 knoppndvlem10 36504 knoppndvlem14 36508 knoppndvlem15 36509 knoppndvlem17 36511 |
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