| Mathbox for Steven Nguyen |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > sn-ltmul2d | Structured version Visualization version GIF version | ||
| Description: ltmul2d 13079 without ax-mulcom 11137. (Contributed by SN, 26-Jun-2024.) |
| Ref | Expression |
|---|---|
| sn-ltmul2d.a | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| sn-ltmul2d.b | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| sn-ltmul2d.c | ⊢ (𝜑 → 𝐶 ∈ ℝ) |
| sn-ltmul2d.1 | ⊢ (𝜑 → 0 < 𝐶) |
| Ref | Expression |
|---|---|
| sn-ltmul2d | ⊢ (𝜑 → ((𝐶 · 𝐴) < (𝐶 · 𝐵) ↔ 𝐴 < 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sn-ltmul2d.c | . . . 4 ⊢ (𝜑 → 𝐶 ∈ ℝ) | |
| 2 | sn-ltmul2d.b | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 3 | sn-ltmul2d.a | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 4 | rersubcl 42987 | . . . . 5 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐵 −ℝ 𝐴) ∈ ℝ) | |
| 5 | 2, 3, 4 | syl2anc 593 | . . . 4 ⊢ (𝜑 → (𝐵 −ℝ 𝐴) ∈ ℝ) |
| 6 | sn-ltmul2d.1 | . . . 4 ⊢ (𝜑 → 0 < 𝐶) | |
| 7 | 1, 5, 6 | mulgt0b1d 43094 | . . 3 ⊢ (𝜑 → (0 < (𝐵 −ℝ 𝐴) ↔ 0 < (𝐶 · (𝐵 −ℝ 𝐴)))) |
| 8 | resubdi 43005 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐶 · (𝐵 −ℝ 𝐴)) = ((𝐶 · 𝐵) −ℝ (𝐶 · 𝐴))) | |
| 9 | 1, 2, 3, 8 | syl3anc 1390 | . . . 4 ⊢ (𝜑 → (𝐶 · (𝐵 −ℝ 𝐴)) = ((𝐶 · 𝐵) −ℝ (𝐶 · 𝐴))) |
| 10 | 9 | breq2d 5112 | . . 3 ⊢ (𝜑 → (0 < (𝐶 · (𝐵 −ℝ 𝐴)) ↔ 0 < ((𝐶 · 𝐵) −ℝ (𝐶 · 𝐴)))) |
| 11 | 7, 10 | bitr2d 282 | . 2 ⊢ (𝜑 → (0 < ((𝐶 · 𝐵) −ℝ (𝐶 · 𝐴)) ↔ 0 < (𝐵 −ℝ 𝐴))) |
| 12 | 1, 3 | remulcld 11212 | . . 3 ⊢ (𝜑 → (𝐶 · 𝐴) ∈ ℝ) |
| 13 | 1, 2 | remulcld 11212 | . . 3 ⊢ (𝜑 → (𝐶 · 𝐵) ∈ ℝ) |
| 14 | reposdif 43077 | . . 3 ⊢ (((𝐶 · 𝐴) ∈ ℝ ∧ (𝐶 · 𝐵) ∈ ℝ) → ((𝐶 · 𝐴) < (𝐶 · 𝐵) ↔ 0 < ((𝐶 · 𝐵) −ℝ (𝐶 · 𝐴)))) | |
| 15 | 12, 13, 14 | syl2anc 593 | . 2 ⊢ (𝜑 → ((𝐶 · 𝐴) < (𝐶 · 𝐵) ↔ 0 < ((𝐶 · 𝐵) −ℝ (𝐶 · 𝐴)))) |
| 16 | reposdif 43077 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ 0 < (𝐵 −ℝ 𝐴))) | |
| 17 | 3, 2, 16 | syl2anc 593 | . 2 ⊢ (𝜑 → (𝐴 < 𝐵 ↔ 0 < (𝐵 −ℝ 𝐴))) |
| 18 | 11, 15, 17 | 3bitr4d 313 | 1 ⊢ (𝜑 → ((𝐶 · 𝐴) < (𝐶 · 𝐵) ↔ 𝐴 < 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 = wceq 1560 ∈ wcel 2142 class class class wbr 5100 (class class class)co 7396 ℝcr 11072 0cc0 11073 · cmul 11078 < clt 11216 −ℝ cresub 42974 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5542 df-po 5555 df-so 5556 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11218 df-mnf 11219 df-ltxr 11221 df-2 12280 df-3 12281 df-resub 42975 |
| This theorem is referenced by: sn-ltmulgt11d 43096 |
| Copyright terms: Public domain | W3C validator |