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Mirrors > Home > MPE Home > Th. List > Mathboxes > knoppndvlem13 | Structured version Visualization version GIF version |
Description: Lemma for knoppndv 31695. (Contributed by Asger C. Ipsen, 1-Jul-2021.) (Revised by Asger C. Ipsen, 5-Jul-2021.) |
Ref | Expression |
---|---|
knoppndvlem13.c | ⊢ (𝜑 → 𝐶 ∈ (-1(,)1)) |
knoppndvlem13.n | ⊢ (𝜑 → 𝑁 ∈ ℕ) |
knoppndvlem13.1 | ⊢ (𝜑 → 1 < (𝑁 · (abs‘𝐶))) |
Ref | Expression |
---|---|
knoppndvlem13 | ⊢ (𝜑 → 𝐶 ≠ 0) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | knoppndvlem13.1 | . . . 4 ⊢ (𝜑 → 1 < (𝑁 · (abs‘𝐶))) | |
2 | 1 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝐶 = 0) → 1 < (𝑁 · (abs‘𝐶))) |
3 | 0lt1 10429 | . . . . . 6 ⊢ 0 < 1 | |
4 | 0re 9919 | . . . . . . 7 ⊢ 0 ∈ ℝ | |
5 | 1re 9918 | . . . . . . 7 ⊢ 1 ∈ ℝ | |
6 | 4, 5 | ltnsymi 10035 | . . . . . 6 ⊢ (0 < 1 → ¬ 1 < 0) |
7 | 3, 6 | ax-mp 5 | . . . . 5 ⊢ ¬ 1 < 0 |
8 | 7 | a1i 11 | . . . 4 ⊢ ((𝜑 ∧ 𝐶 = 0) → ¬ 1 < 0) |
9 | id 22 | . . . . . . . . . 10 ⊢ (𝐶 = 0 → 𝐶 = 0) | |
10 | 9 | abs00bd 13879 | . . . . . . . . 9 ⊢ (𝐶 = 0 → (abs‘𝐶) = 0) |
11 | 10 | oveq2d 6565 | . . . . . . . 8 ⊢ (𝐶 = 0 → (𝑁 · (abs‘𝐶)) = (𝑁 · 0)) |
12 | 11 | adantl 481 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐶 = 0) → (𝑁 · (abs‘𝐶)) = (𝑁 · 0)) |
13 | knoppndvlem13.n | . . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
14 | nncn 10905 | . . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ) | |
15 | 13, 14 | syl 17 | . . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ ℂ) |
16 | 15 | adantr 480 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐶 = 0) → 𝑁 ∈ ℂ) |
17 | 16 | mul01d 10114 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐶 = 0) → (𝑁 · 0) = 0) |
18 | 12, 17 | eqtrd 2644 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐶 = 0) → (𝑁 · (abs‘𝐶)) = 0) |
19 | 18 | eqcomd 2616 | . . . . 5 ⊢ ((𝜑 ∧ 𝐶 = 0) → 0 = (𝑁 · (abs‘𝐶))) |
20 | 19 | breq2d 4595 | . . . 4 ⊢ ((𝜑 ∧ 𝐶 = 0) → (1 < 0 ↔ 1 < (𝑁 · (abs‘𝐶)))) |
21 | 8, 20 | mtbid 313 | . . 3 ⊢ ((𝜑 ∧ 𝐶 = 0) → ¬ 1 < (𝑁 · (abs‘𝐶))) |
22 | 2, 21 | pm2.65da 598 | . 2 ⊢ (𝜑 → ¬ 𝐶 = 0) |
23 | 22 | neqned 2789 | 1 ⊢ (𝜑 → 𝐶 ≠ 0) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ≠ wne 2780 class class class wbr 4583 ‘cfv 5804 (class class class)co 6549 ℂcc 9813 0cc0 9815 1c1 9816 · cmul 9820 < clt 9953 -cneg 10146 ℕcn 10897 (,)cioo 12046 abscabs 13822 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-sup 8231 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-2 10956 df-3 10957 df-n0 11170 df-z 11255 df-uz 11564 df-rp 11709 df-seq 12664 df-exp 12723 df-cj 13687 df-re 13688 df-im 13689 df-sqrt 13823 df-abs 13824 |
This theorem is referenced by: knoppndvlem14 31686 knoppndvlem17 31689 |
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