Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > ltdivgt1 | Structured version Visualization version GIF version |
Description: Divsion by a number greater than 1. (Contributed by Glauco Siliprandi, 21-Nov-2020.) |
Ref | Expression |
---|---|
ltdivgt1.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ+) |
ltdivgt1.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ+) |
Ref | Expression |
---|---|
ltdivgt1 | ⊢ (𝜑 → (1 < 𝐵 ↔ (𝐴 / 𝐵) < 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1rp 12387 | . . . 4 ⊢ 1 ∈ ℝ+ | |
2 | 1 | a1i 11 | . . 3 ⊢ (𝜑 → 1 ∈ ℝ+) |
3 | ltdivgt1.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ+) | |
4 | ltdivgt1.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ+) | |
5 | 2, 3, 4 | ltdiv2d 12448 | . 2 ⊢ (𝜑 → (1 < 𝐵 ↔ (𝐴 / 𝐵) < (𝐴 / 1))) |
6 | 4 | rpcnd 12427 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ ℂ) |
7 | 6 | div1d 11401 | . . 3 ⊢ (𝜑 → (𝐴 / 1) = 𝐴) |
8 | 7 | breq2d 5071 | . 2 ⊢ (𝜑 → ((𝐴 / 𝐵) < (𝐴 / 1) ↔ (𝐴 / 𝐵) < 𝐴)) |
9 | 5, 8 | bitrd 281 | 1 ⊢ (𝜑 → (1 < 𝐵 ↔ (𝐴 / 𝐵) < 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 ∈ wcel 2113 class class class wbr 5059 (class class class)co 7149 1c1 10531 < clt 10668 / cdiv 11290 ℝ+crp 12383 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2792 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5323 ax-un 7454 ax-resscn 10587 ax-1cn 10588 ax-icn 10589 ax-addcl 10590 ax-addrcl 10591 ax-mulcl 10592 ax-mulrcl 10593 ax-mulcom 10594 ax-addass 10595 ax-mulass 10596 ax-distr 10597 ax-i2m1 10598 ax-1ne0 10599 ax-1rid 10600 ax-rnegex 10601 ax-rrecex 10602 ax-cnre 10603 ax-pre-lttri 10604 ax-pre-lttrn 10605 ax-pre-ltadd 10606 ax-pre-mulgt0 10607 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1083 df-3an 1084 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2799 df-cleq 2813 df-clel 2892 df-nfc 2962 df-ne 3016 df-nel 3123 df-ral 3142 df-rex 3143 df-reu 3144 df-rmo 3145 df-rab 3146 df-v 3493 df-sbc 3769 df-csb 3877 df-dif 3932 df-un 3934 df-in 3936 df-ss 3945 df-nul 4285 df-if 4461 df-pw 4534 df-sn 4561 df-pr 4563 df-op 4567 df-uni 4832 df-br 5060 df-opab 5122 df-mpt 5140 df-id 5453 df-po 5467 df-so 5468 df-xp 5554 df-rel 5555 df-cnv 5556 df-co 5557 df-dm 5558 df-rn 5559 df-res 5560 df-ima 5561 df-iota 6307 df-fun 6350 df-fn 6351 df-f 6352 df-f1 6353 df-fo 6354 df-f1o 6355 df-fv 6356 df-riota 7107 df-ov 7152 df-oprab 7153 df-mpo 7154 df-er 8282 df-en 8503 df-dom 8504 df-sdom 8505 df-pnf 10670 df-mnf 10671 df-xr 10672 df-ltxr 10673 df-le 10674 df-sub 10865 df-neg 10866 df-div 11291 df-rp 12384 |
This theorem is referenced by: hoidmvlelem3 42953 |
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