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| Mirrors > Home > MPE Home > Th. List > abssubd | Structured version Visualization version GIF version | ||
| Description: Swapping order of subtraction doesn't change the absolute value. Example of [Apostol] p. 363. (Contributed by Mario Carneiro, 29-May-2016.) |
| Ref | Expression |
|---|---|
| abscld.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| abssubd.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| Ref | Expression |
|---|---|
| abssubd | ⊢ (𝜑 → (abs‘(𝐴 − 𝐵)) = (abs‘(𝐵 − 𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | abscld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | abssubd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 3 | abssub 15289 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (abs‘(𝐴 − 𝐵)) = (abs‘(𝐵 − 𝐴))) | |
| 4 | 1, 2, 3 | syl2anc 585 | 1 ⊢ (𝜑 → (abs‘(𝐴 − 𝐵)) = (abs‘(𝐵 − 𝐴))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ‘cfv 6498 (class class class)co 7367 ℂcc 11036 − cmin 11377 abscabs 15196 |
| 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 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-div 11808 df-nn 12175 df-2 12244 df-cj 15061 df-re 15062 df-im 15063 df-abs 15198 |
| This theorem is referenced by: rlimuni 15512 climuni 15514 2clim 15534 rlimrecl 15542 subcn2 15557 reccn2 15559 climcau 15633 caucvgrlem 15635 serf0 15643 mertenslem2 15850 xrsxmet 24775 elcncf2 24857 cnllycmp 24923 dvlip 25960 c1lip1 25964 dvfsumrlim2 25999 dvfsum2 26001 ftc1a 26004 aalioulem3 26300 ulmcaulem 26359 ulmcau 26360 ulmbdd 26363 ulmcn 26364 ulmdvlem1 26365 logcnlem4 26609 ssscongptld 26786 chordthmlem3 26798 chordthmlem4 26799 lgamucov 27001 ftalem2 27037 logfacrlim 27187 dchrisumlem3 27454 dchrisum0lem1b 27478 mulog2sumlem2 27498 pntrlog2bndlem3 27542 smcnlem 30768 constrrtcc 33879 iconstr 33910 qqhucn 34136 dnibndlem2 36739 dnibndlem6 36743 dnibndlem8 36745 dnibnd 36751 unbdqndv2lem1 36769 knoppndvlem10 36781 knoppndvlem15 36786 ftc1anclem8 38021 irrapxlem3 43252 irrapxlem5 43254 pell14qrgt0 43287 acongeq 43411 absimlere 45907 limcrecl 46059 islpcn 46067 lptre2pt 46068 0ellimcdiv 46077 limclner 46079 dvbdfbdioolem2 46357 ioodvbdlimc1lem1 46359 ioodvbdlimc1lem2 46360 ioodvbdlimc2lem 46362 fourierdlem42 46577 ioorrnopnlem 46732 smflimlem4 47202 |
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