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Mirrors > Home > MPE Home > Th. List > Mathboxes > 0nonelalab | Structured version Visualization version GIF version |
Description: Technical lemma for open interval. (Contributed by metakunt, 12-Aug-2024.) |
Ref | Expression |
---|---|
0nonelaleb.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
0nonelaleb.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
0nonelaleb.3 | ⊢ (𝜑 → 0 < 𝐴) |
0nonelaleb.4 | ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
0nonelalab.5 | ⊢ (𝜑 → 𝐶 ∈ (𝐴(,)𝐵)) |
Ref | Expression |
---|---|
0nonelalab | ⊢ (𝜑 → 0 ≠ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0red 11262 | . 2 ⊢ (𝜑 → 0 ∈ ℝ) | |
2 | 0nonelaleb.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
3 | 0nonelalab.5 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ (𝐴(,)𝐵)) | |
4 | elioore 13414 | . . . 4 ⊢ (𝐶 ∈ (𝐴(,)𝐵) → 𝐶 ∈ ℝ) | |
5 | 3, 4 | syl 17 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ) |
6 | 0nonelaleb.3 | . . 3 ⊢ (𝜑 → 0 < 𝐴) | |
7 | 2 | rexrd 11309 | . . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
8 | 0nonelaleb.2 | . . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
9 | 8 | rexrd 11309 | . . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
10 | elioo2 13425 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴(,)𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) | |
11 | 7, 9, 10 | syl2anc 584 | . . . . 5 ⊢ (𝜑 → (𝐶 ∈ (𝐴(,)𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) |
12 | 3, 11 | mpbid 232 | . . . 4 ⊢ (𝜑 → (𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵)) |
13 | 12 | simp2d 1142 | . . 3 ⊢ (𝜑 → 𝐴 < 𝐶) |
14 | 1, 2, 5, 6, 13 | lttrd 11420 | . 2 ⊢ (𝜑 → 0 < 𝐶) |
15 | 1, 14 | ltned 11395 | 1 ⊢ (𝜑 → 0 ≠ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ w3a 1086 ∈ wcel 2106 ≠ wne 2938 class class class wbr 5148 (class class class)co 7431 ℝcr 11152 0cc0 11153 ℝ*cxr 11292 < clt 11293 ≤ cle 11294 (,)cioo 13384 |
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-addrcl 11214 ax-rnegex 11224 ax-cnre 11226 ax-pre-lttri 11227 ax-pre-lttrn 11228 |
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-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 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-id 5583 df-po 5597 df-so 5598 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-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-f1 6568 df-fo 6569 df-f1o 6570 df-fv 6571 df-ov 7434 df-oprab 7435 df-mpo 7436 df-1st 8013 df-2nd 8014 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-ioo 13388 |
This theorem is referenced by: dvrelogpow2b 42050 |
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