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| Mirrors > Home > MPE Home > Th. List > xltmul1 | Structured version Visualization version GIF version | ||
| Description: Extended real version of ltmul1 12064. (Contributed by Mario Carneiro, 20-Aug-2015.) |
| Ref | Expression |
|---|---|
| xltmul1 | ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → (𝐴 < 𝐵 ↔ (𝐴 ·e 𝐶) < (𝐵 ·e 𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xlemul1 13315 | . . . 4 ⊢ ((𝐵 ∈ ℝ* ∧ 𝐴 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → (𝐵 ≤ 𝐴 ↔ (𝐵 ·e 𝐶) ≤ (𝐴 ·e 𝐶))) | |
| 2 | 1 | 3com12 1139 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → (𝐵 ≤ 𝐴 ↔ (𝐵 ·e 𝐶) ≤ (𝐴 ·e 𝐶))) |
| 3 | 2 | notbid 321 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → (¬ 𝐵 ≤ 𝐴 ↔ ¬ (𝐵 ·e 𝐶) ≤ (𝐴 ·e 𝐶))) |
| 4 | xrltnle 11275 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 < 𝐵 ↔ ¬ 𝐵 ≤ 𝐴)) | |
| 5 | 4 | 3adant3 1148 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → (𝐴 < 𝐵 ↔ ¬ 𝐵 ≤ 𝐴)) |
| 6 | simp1 1152 | . . . 4 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → 𝐴 ∈ ℝ*) | |
| 7 | rpxr 13025 | . . . . 5 ⊢ (𝐶 ∈ ℝ+ → 𝐶 ∈ ℝ*) | |
| 8 | 7 | 3ad2ant3 1151 | . . . 4 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → 𝐶 ∈ ℝ*) |
| 9 | xmulcl 13298 | . . . 4 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (𝐴 ·e 𝐶) ∈ ℝ*) | |
| 10 | 6, 8, 9 | syl2anc 595 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → (𝐴 ·e 𝐶) ∈ ℝ*) |
| 11 | simp2 1153 | . . . 4 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → 𝐵 ∈ ℝ*) | |
| 12 | xmulcl 13298 | . . . 4 ⊢ ((𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (𝐵 ·e 𝐶) ∈ ℝ*) | |
| 13 | 11, 8, 12 | syl2anc 595 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → (𝐵 ·e 𝐶) ∈ ℝ*) |
| 14 | xrltnle 11275 | . . 3 ⊢ (((𝐴 ·e 𝐶) ∈ ℝ* ∧ (𝐵 ·e 𝐶) ∈ ℝ*) → ((𝐴 ·e 𝐶) < (𝐵 ·e 𝐶) ↔ ¬ (𝐵 ·e 𝐶) ≤ (𝐴 ·e 𝐶))) | |
| 15 | 10, 13, 14 | syl2anc 595 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → ((𝐴 ·e 𝐶) < (𝐵 ·e 𝐶) ↔ ¬ (𝐵 ·e 𝐶) ≤ (𝐴 ·e 𝐶))) |
| 16 | 3, 5, 15 | 3bitr4d 314 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ+) → (𝐴 < 𝐵 ↔ (𝐴 ·e 𝐶) < (𝐵 ·e 𝐶))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ w3a 1101 ∈ wcel 2149 class class class wbr 5113 (class class class)co 7411 ℝ*cxr 11241 < clt 11242 ≤ cle 11243 ℝ+crp 13015 ·e cxmu 13135 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11155 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-1st 7985 df-2nd 7986 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 df-div 11871 df-rp 13016 df-xneg 13136 df-xmul 13138 |
| This theorem is referenced by: xltmul2 13318 |
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