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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 11614 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ 𝐶 < (𝐴 + 𝐵))) | |
| 2 | 1 | 3com13 1125 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ 𝐶 < (𝐴 + 𝐵))) |
| 3 | resubcl 11452 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 − 𝐵) ∈ ℝ) | |
| 4 | ltnle 11219 | . . . . 5 ⊢ (((𝐶 − 𝐵) ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) | |
| 5 | 3, 4 | stoic3 1778 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) |
| 6 | 5 | 3com13 1125 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 − 𝐵) < 𝐴 ↔ ¬ 𝐴 ≤ (𝐶 − 𝐵))) |
| 7 | readdcl 11115 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 + 𝐵) ∈ ℝ) | |
| 8 | ltnle 11219 | . . . . . 6 ⊢ ((𝐶 ∈ ℝ ∧ (𝐴 + 𝐵) ∈ ℝ) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) | |
| 9 | 7, 8 | sylan2 594 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ (𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ)) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) |
| 10 | 9 | 3impb 1115 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 < (𝐴 + 𝐵) ↔ ¬ (𝐴 + 𝐵) ≤ 𝐶)) |
| 11 | 10 | 3coml 1128 | . . 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 1087 ∈ wcel 2114 class class class wbr 5086 (class class class)co 7361 ℝcr 11031 + caddc 11035 < clt 11173 ≤ cle 11174 − cmin 11371 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5520 df-po 5533 df-so 5534 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 |
| This theorem is referenced by: leaddsub2 11621 lesub 11623 lesub2 11639 subge0 11657 lesub3d 11762 div4p1lem1div2 12426 eluzp1m1 12808 eluzsub 12812 fzen 13489 fznatpl1 13526 expmulnbnd 14191 hashdvds 16739 sylow1lem5 19571 gsumbagdiaglem 21923 voliunlem2 25531 itg2split 25729 dvfsumlem3 26008 pilem2 26433 logimul 26594 emcllem2 26977 chtublem 27191 dchrisum0re 27493 pntlemg 27578 crctcshwlkn0 29907 logdivsqrle 34813 poimirlem7 37965 totbndbnd 38127 aks4d1p1p5 42531 aks4d1p1 42532 primrootspoweq0 42562 sticksstones10 42611 sticksstones12a 42613 sticksstones12 42614 aks6d1c6lem3 42628 bcle2d 42635 binomcxplemnn0 44797 2timesltsqm1 47842 fmtnodvds 48022 lighneallem4a 48086 nnolog2flm1 49081 |
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