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| Mirrors > Home > MPE Home > Th. List > lt2subd | Structured version Visualization version GIF version | ||
| Description: Subtracting both sides of two 'less than' relations. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| leidd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| ltnegd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| ltadd1d.3 | ⊢ (𝜑 → 𝐶 ∈ ℝ) |
| lt2addd.4 | ⊢ (𝜑 → 𝐷 ∈ ℝ) |
| lt2addd.5 | ⊢ (𝜑 → 𝐴 < 𝐶) |
| lt2addd.6 | ⊢ (𝜑 → 𝐵 < 𝐷) |
| Ref | Expression |
|---|---|
| lt2subd | ⊢ (𝜑 → (𝐴 − 𝐷) < (𝐶 − 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lt2addd.5 | . 2 ⊢ (𝜑 → 𝐴 < 𝐶) | |
| 2 | lt2addd.6 | . 2 ⊢ (𝜑 → 𝐵 < 𝐷) | |
| 3 | leidd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 4 | lt2addd.4 | . . 3 ⊢ (𝜑 → 𝐷 ∈ ℝ) | |
| 5 | ltadd1d.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ) | |
| 6 | ltnegd.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 7 | lt2sub 11606 | . . 3 ⊢ (((𝐴 ∈ ℝ ∧ 𝐷 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ)) → ((𝐴 < 𝐶 ∧ 𝐵 < 𝐷) → (𝐴 − 𝐷) < (𝐶 − 𝐵))) | |
| 8 | 3, 4, 5, 6, 7 | syl22anc 838 | . 2 ⊢ (𝜑 → ((𝐴 < 𝐶 ∧ 𝐵 < 𝐷) → (𝐴 − 𝐷) < (𝐶 − 𝐵))) |
| 9 | 1, 2, 8 | mp2and 699 | 1 ⊢ (𝜑 → (𝐴 − 𝐷) < (𝐶 − 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2109 class class class wbr 5088 (class class class)co 7340 ℝcr 10996 < clt 11137 − cmin 11335 |
| 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 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5367 ax-un 7662 ax-resscn 11054 ax-1cn 11055 ax-icn 11056 ax-addcl 11057 ax-addrcl 11058 ax-mulcl 11059 ax-mulrcl 11060 ax-mulcom 11061 ax-addass 11062 ax-mulass 11063 ax-distr 11064 ax-i2m1 11065 ax-1ne0 11066 ax-1rid 11067 ax-rnegex 11068 ax-rrecex 11069 ax-cnre 11070 ax-pre-lttri 11071 ax-pre-lttrn 11072 ax-pre-ltadd 11073 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3344 df-rab 3393 df-v 3435 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-br 5089 df-opab 5151 df-mpt 5170 df-id 5508 df-po 5521 df-so 5522 df-xp 5619 df-rel 5620 df-cnv 5621 df-co 5622 df-dm 5623 df-rn 5624 df-res 5625 df-ima 5626 df-iota 6432 df-fun 6478 df-fn 6479 df-f 6480 df-f1 6481 df-fo 6482 df-f1o 6483 df-fv 6484 df-riota 7297 df-ov 7343 df-oprab 7344 df-mpo 7345 df-er 8616 df-en 8864 df-dom 8865 df-sdom 8866 df-pnf 11139 df-mnf 11140 df-xr 11141 df-ltxr 11142 df-le 11143 df-sub 11337 df-neg 11338 |
| This theorem is referenced by: ovolicc2lem4 25402 |
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