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| Mirrors > Home > ILE Home > Th. List > lemuldivd | GIF version | ||
| Description: 'Less than or equal to' relationship between division and multiplication. (Contributed by Mario Carneiro, 30-May-2016.) |
| Ref | Expression |
|---|---|
| ltmul1d.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| ltmul1d.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| ltmul1d.3 | ⊢ (𝜑 → 𝐶 ∈ ℝ+) |
| Ref | Expression |
|---|---|
| lemuldivd | ⊢ (𝜑 → ((𝐴 · 𝐶) ≤ 𝐵 ↔ 𝐴 ≤ (𝐵 / 𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltmul1d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 2 | ltmul1d.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 3 | ltmul1d.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ+) | |
| 4 | 3 | rpregt0d 9780 | . 2 ⊢ (𝜑 → (𝐶 ∈ ℝ ∧ 0 < 𝐶)) |
| 5 | lemuldiv 8910 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ (𝐶 ∈ ℝ ∧ 0 < 𝐶)) → ((𝐴 · 𝐶) ≤ 𝐵 ↔ 𝐴 ≤ (𝐵 / 𝐶))) | |
| 6 | 1, 2, 4, 5 | syl3anc 1249 | 1 ⊢ (𝜑 → ((𝐴 · 𝐶) ≤ 𝐵 ↔ 𝐴 ≤ (𝐵 / 𝐶))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∈ wcel 2167 class class class wbr 4034 (class class class)co 5923 ℝcr 7880 0cc0 7881 · cmul 7886 < clt 8063 ≤ cle 8064 / cdiv 8701 ℝ+crp 9730 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-setind 4574 ax-cnex 7972 ax-resscn 7973 ax-1cn 7974 ax-1re 7975 ax-icn 7976 ax-addcl 7977 ax-addrcl 7978 ax-mulcl 7979 ax-mulrcl 7980 ax-addcom 7981 ax-mulcom 7982 ax-addass 7983 ax-mulass 7984 ax-distr 7985 ax-i2m1 7986 ax-0lt1 7987 ax-1rid 7988 ax-0id 7989 ax-rnegex 7990 ax-precex 7991 ax-cnre 7992 ax-pre-ltirr 7993 ax-pre-ltwlin 7994 ax-pre-lttrn 7995 ax-pre-apti 7996 ax-pre-ltadd 7997 ax-pre-mulgt0 7998 ax-pre-mulext 7999 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-reu 2482 df-rmo 2483 df-rab 2484 df-v 2765 df-sbc 2990 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-br 4035 df-opab 4096 df-id 4329 df-po 4332 df-iso 4333 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-iota 5220 df-fun 5261 df-fv 5267 df-riota 5878 df-ov 5926 df-oprab 5927 df-mpo 5928 df-pnf 8065 df-mnf 8066 df-xr 8067 df-ltxr 8068 df-le 8069 df-sub 8201 df-neg 8202 df-reap 8604 df-ap 8611 df-div 8702 df-rp 9731 |
| This theorem is referenced by: leexp2a 10686 bitsfzolem 12121 bitsfzo 12122 bitscmp 12125 |
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