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Mirrors > Home > MPE Home > Th. List > subge0 | Structured version Visualization version GIF version |
Description: Nonnegative subtraction. (Contributed by NM, 14-Mar-2005.) (Proof shortened by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
subge0 | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (0 ≤ (𝐴 − 𝐵) ↔ 𝐵 ≤ 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0red 11293 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 0 ∈ ℝ) | |
2 | simpr 484 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 𝐵 ∈ ℝ) | |
3 | simpl 482 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 𝐴 ∈ ℝ) | |
4 | leaddsub 11766 | . . 3 ⊢ ((0 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((0 + 𝐵) ≤ 𝐴 ↔ 0 ≤ (𝐴 − 𝐵))) | |
5 | 1, 2, 3, 4 | syl3anc 1371 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((0 + 𝐵) ≤ 𝐴 ↔ 0 ≤ (𝐴 − 𝐵))) |
6 | 2 | recnd 11318 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 𝐵 ∈ ℂ) |
7 | 6 | addlidd 11491 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (0 + 𝐵) = 𝐵) |
8 | 7 | breq1d 5176 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((0 + 𝐵) ≤ 𝐴 ↔ 𝐵 ≤ 𝐴)) |
9 | 5, 8 | bitr3d 281 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (0 ≤ (𝐴 − 𝐵) ↔ 𝐵 ≤ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2108 class class class wbr 5166 (class class class)co 7448 ℝcr 11183 0cc0 11184 + caddc 11187 ≤ cle 11325 − cmin 11520 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 ax-resscn 11241 ax-1cn 11242 ax-icn 11243 ax-addcl 11244 ax-addrcl 11245 ax-mulcl 11246 ax-mulrcl 11247 ax-mulcom 11248 ax-addass 11249 ax-mulass 11250 ax-distr 11251 ax-i2m1 11252 ax-1ne0 11253 ax-1rid 11254 ax-rnegex 11255 ax-rrecex 11256 ax-cnre 11257 ax-pre-lttri 11258 ax-pre-lttrn 11259 ax-pre-ltadd 11260 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-nel 3053 df-ral 3068 df-rex 3077 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-br 5167 df-opab 5229 df-mpt 5250 df-id 5593 df-po 5607 df-so 5608 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-riota 7404 df-ov 7451 df-oprab 7452 df-mpo 7453 df-er 8763 df-en 9004 df-dom 9005 df-sdom 9006 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11522 df-neg 11523 |
This theorem is referenced by: subge0i 11843 subge0d 11880 mulsuble0b 12167 znn0sub 12690 uzsubsubfz 13606 difelfzle 13698 difelfznle 13699 fracge0 13855 modge0 13930 2submod 13983 expnbnd 14281 pfxccatin12lem2 14779 swrdccat 14783 repswswrd 14832 cshwidxmod 14851 abssubge0 15376 blcvx 24839 iirev 24975 iihalf2 24980 ovolfsf 25525 cosq14ge0 26571 sinord 26594 resinf1o 26596 ang180lem2 26871 acosbnd 26961 ftalem5 27138 mumullem2 27241 rpvmasumlem 27549 dchrisum0flblem1 27570 brbtwn2 28938 colinearalglem4 28942 ax5seglem3 28964 resconn 35214 fz0n 35693 sin2h 37570 cos2h 37571 tan2h 37572 ftc1anclem5 37657 dvasin 37664 jm2.23 42953 subsubelfzo0 47241 m1modmmod 48255 |
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