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Mirrors > Home > MPE Home > Th. List > leaddsub | Structured version Visualization version GIF version |
Description: 'Less than or equal to' relationship between addition and subtraction. (Contributed by NM, 6-Apr-2005.) |
Ref | Expression |
---|---|
leaddsub | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) ≤ 𝐶 ↔ 𝐴 ≤ (𝐶 − 𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ltsubadd 10690 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ 𝐶 < (𝐴 + 𝐵))) | |
2 | 1 | 3com13 1119 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ 𝐶 < (𝐴 + 𝐵))) |
3 | resubcl 10537 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 − 𝐵) ∈ ℝ) | |
4 | ltnle 10309 | . . . . 5 ⊢ (((𝐶 − 𝐵) ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) | |
5 | 3, 4 | stoic3 1850 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) |
6 | 5 | 3com13 1119 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) |
7 | readdcl 10211 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 + 𝐵) ∈ ℝ) | |
8 | ltnle 10309 | . . . . . 6 ⊢ ((𝐶 ∈ ℝ ∧ (𝐴 + 𝐵) ∈ ℝ) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) | |
9 | 7, 8 | sylan2 492 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ (𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ)) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) |
10 | 9 | 3impb 1108 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) |
11 | 10 | 3coml 1122 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) |
12 | 2, 6, 11 | 3bitr3rd 299 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (¬ (𝐴 + 𝐵) ≤ 𝐶 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) |
13 | 12 | con4bid 306 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 + 𝐵) ≤ 𝐶 ↔ 𝐴 ≤ (𝐶 − 𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 196 ∧ wa 383 ∧ w3a 1072 ∈ wcel 2139 class class class wbr 4804 (class class class)co 6813 ℝcr 10127 + caddc 10131 < clt 10266 ≤ cle 10267 − cmin 10458 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1871 ax-4 1886 ax-5 1988 ax-6 2054 ax-7 2090 ax-8 2141 ax-9 2148 ax-10 2168 ax-11 2183 ax-12 2196 ax-13 2391 ax-ext 2740 ax-sep 4933 ax-nul 4941 ax-pow 4992 ax-pr 5055 ax-un 7114 ax-resscn 10185 ax-1cn 10186 ax-icn 10187 ax-addcl 10188 ax-addrcl 10189 ax-mulcl 10190 ax-mulrcl 10191 ax-mulcom 10192 ax-addass 10193 ax-mulass 10194 ax-distr 10195 ax-i2m1 10196 ax-1ne0 10197 ax-1rid 10198 ax-rnegex 10199 ax-rrecex 10200 ax-cnre 10201 ax-pre-lttri 10202 ax-pre-lttrn 10203 ax-pre-ltadd 10204 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3or 1073 df-3an 1074 df-tru 1635 df-ex 1854 df-nf 1859 df-sb 2047 df-eu 2611 df-mo 2612 df-clab 2747 df-cleq 2753 df-clel 2756 df-nfc 2891 df-ne 2933 df-nel 3036 df-ral 3055 df-rex 3056 df-reu 3057 df-rab 3059 df-v 3342 df-sbc 3577 df-csb 3675 df-dif 3718 df-un 3720 df-in 3722 df-ss 3729 df-nul 4059 df-if 4231 df-pw 4304 df-sn 4322 df-pr 4324 df-op 4328 df-uni 4589 df-br 4805 df-opab 4865 df-mpt 4882 df-id 5174 df-po 5187 df-so 5188 df-xp 5272 df-rel 5273 df-cnv 5274 df-co 5275 df-dm 5276 df-rn 5277 df-res 5278 df-ima 5279 df-iota 6012 df-fun 6051 df-fn 6052 df-f 6053 df-f1 6054 df-fo 6055 df-f1o 6056 df-fv 6057 df-riota 6774 df-ov 6816 df-oprab 6817 df-mpt2 6818 df-er 7911 df-en 8122 df-dom 8123 df-sdom 8124 df-pnf 10268 df-mnf 10269 df-xr 10270 df-ltxr 10271 df-le 10272 df-sub 10460 df-neg 10461 |
This theorem is referenced by: leaddsub2 10697 lesub 10699 lesub2 10715 subge0 10733 lesub3d 10837 div4p1lem1div2 11479 eluzp1m1 11903 eluzsubi 11907 fzen 12551 fznatpl1 12588 expmulnbnd 13190 hashdvds 15682 sylow1lem5 18217 gsumbagdiaglem 19577 voliunlem2 23519 itg2split 23715 dvfsumlem3 23990 pilem2 24405 logimul 24559 emcllem2 24922 chtublem 25135 dchrisum0re 25401 pntlemg 25486 crctcshwlkn0 26924 logdivsqrle 31037 poimirlem7 33729 totbndbnd 33901 binomcxplemnn0 39050 fmtnodvds 41966 lighneallem4a 42035 nnolog2flm1 42894 |
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