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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 11593 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ 𝐶 < (𝐴 + 𝐵))) | |
| 2 | 1 | 3com13 1124 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ 𝐶 < (𝐴 + 𝐵))) |
| 3 | resubcl 11431 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 − 𝐵) ∈ ℝ) | |
| 4 | ltnle 11198 | . . . . 5 ⊢ (((𝐶 − 𝐵) ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) | |
| 5 | 3, 4 | stoic3 1777 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) |
| 6 | 5 | 3com13 1124 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) |
| 7 | readdcl 11095 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 + 𝐵) ∈ ℝ) | |
| 8 | ltnle 11198 | . . . . . 6 ⊢ ((𝐶 ∈ ℝ ∧ (𝐴 + 𝐵) ∈ ℝ) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) | |
| 9 | 7, 8 | sylan2 593 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ (𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ)) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) |
| 10 | 9 | 3impb 1114 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) |
| 11 | 10 | 3coml 1127 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) |
| 12 | 2, 6, 11 | 3bitr3rd 310 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (¬ (𝐴 + 𝐵) ≤ 𝐶 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) |
| 13 | 12 | con4bid 317 | 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 206 ∧ wa 395 ∧ w3a 1086 ∈ wcel 2111 class class class wbr 5093 (class class class)co 7352 ℝcr 11011 + caddc 11015 < clt 11152 ≤ cle 11153 − cmin 11350 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-resscn 11069 ax-1cn 11070 ax-icn 11071 ax-addcl 11072 ax-addrcl 11073 ax-mulcl 11074 ax-mulrcl 11075 ax-mulcom 11076 ax-addass 11077 ax-mulass 11078 ax-distr 11079 ax-i2m1 11080 ax-1ne0 11081 ax-1rid 11082 ax-rnegex 11083 ax-rrecex 11084 ax-cnre 11085 ax-pre-lttri 11086 ax-pre-lttrn 11087 ax-pre-ltadd 11088 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-br 5094 df-opab 5156 df-mpt 5175 df-id 5514 df-po 5527 df-so 5528 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-er 8628 df-en 8876 df-dom 8877 df-sdom 8878 df-pnf 11154 df-mnf 11155 df-xr 11156 df-ltxr 11157 df-le 11158 df-sub 11352 df-neg 11353 |
| This theorem is referenced by: leaddsub2 11600 lesub 11602 lesub2 11618 subge0 11636 lesub3d 11741 div4p1lem1div2 12382 eluzp1m1 12764 eluzsub 12768 eluzsubiOLD 12772 fzen 13447 fznatpl1 13484 expmulnbnd 14148 hashdvds 16692 sylow1lem5 19520 gsumbagdiaglem 21873 voliunlem2 25485 itg2split 25683 dvfsumlem3 25968 pilem2 26395 logimul 26556 emcllem2 26940 chtublem 27155 dchrisum0re 27457 pntlemg 27542 crctcshwlkn0 29806 logdivsqrle 34670 poimirlem7 37673 totbndbnd 37835 aks4d1p1p5 42174 aks4d1p1 42175 primrootspoweq0 42205 sticksstones10 42254 sticksstones12a 42256 sticksstones12 42257 aks6d1c6lem3 42271 bcle2d 42278 binomcxplemnn0 44447 fmtnodvds 47649 lighneallem4a 47713 nnolog2flm1 48696 |
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