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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 15344 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (abs‘(𝐴 − 𝐵)) = (abs‘(𝐵 − 𝐴))) | |
| 4 | 1, 2, 3 | syl2anc 593 | 1 ⊢ (𝜑 → (abs‘(𝐴 − 𝐵)) = (abs‘(𝐵 − 𝐴))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ∈ wcel 2141 ‘cfv 6515 (class class class)co 7390 ℂcc 11064 − cmin 11407 abscabs 15251 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pow 5319 ax-pr 5387 ax-un 7712 ax-resscn 11123 ax-1cn 11124 ax-icn 11125 ax-addcl 11126 ax-addrcl 11127 ax-mulcl 11128 ax-mulrcl 11129 ax-mulcom 11130 ax-addass 11131 ax-mulass 11132 ax-distr 11133 ax-i2m1 11134 ax-1ne0 11135 ax-1rid 11136 ax-rnegex 11137 ax-rrecex 11138 ax-cnre 11139 ax-pre-lttri 11140 ax-pre-lttrn 11141 ax-pre-ltadd 11142 ax-pre-mulgt0 11143 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-iun 4948 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5538 df-eprel 5543 df-po 5551 df-so 5552 df-fr 5596 df-we 5598 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-pred 6282 df-ord 6343 df-on 6344 df-lim 6345 df-suc 6346 df-iota 6471 df-fun 6517 df-fn 6518 df-f 6519 df-f1 6520 df-fo 6521 df-f1o 6522 df-fv 6523 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7841 df-2nd 7965 df-frecs 8255 df-wrecs 8286 df-recs 8335 df-rdg 8374 df-er 8671 df-en 8921 df-dom 8922 df-sdom 8923 df-pnf 11211 df-mnf 11212 df-xr 11213 df-ltxr 11214 df-le 11215 df-sub 11409 df-neg 11410 df-div 11838 df-nn 12204 df-2 12273 df-cj 15116 df-re 15117 df-im 15118 df-abs 15253 |
| This theorem is referenced by: rlimuni 15567 climuni 15569 2clim 15589 rlimrecl 15597 subcn2 15612 reccn2 15614 climcau 15688 caucvgrlem 15690 serf0 15698 mertenslem2 15905 xrsxmet 24857 elcncf2 24939 cnllycmp 25005 dvlip 26042 c1lip1 26046 dvfsumrlim2 26081 dvfsum2 26083 ftc1a 26086 aalioulem3 26385 ulmcaulem 26444 ulmcau 26445 ulmbdd 26448 ulmcn 26449 ulmdvlem1 26450 logcnlem4 26697 ssscongptld 26874 chordthmlem3 26886 chordthmlem4 26887 lgamucov 27089 ftalem2 27125 logfacrlim 27275 dchrisumlem3 27542 dchrisum0lem1b 27566 mulog2sumlem2 27586 pntrlog2bndlem3 27630 smcnlem 30856 constrrtcc 33992 iconstr 34023 qqhucn 34249 dnibndlem2 36877 dnibndlem6 36881 dnibndlem8 36883 dnibnd 36889 unbdqndv2lem1 36907 knoppndvlem10 36919 knoppndvlem15 36924 ftc1anclem8 38159 irrapxlem3 43361 irrapxlem5 43363 pell14qrgt0 43396 acongeq 43520 absimlere 46013 limcrecl 46165 islpcn 46173 lptre2pt 46174 0ellimcdiv 46183 limclner 46185 dvbdfbdioolem2 46463 ioodvbdlimc1lem1 46465 ioodvbdlimc1lem2 46466 ioodvbdlimc2lem 46468 fourierdlem42 46683 ioorrnopnlem 46838 smflimlem4 47308 |
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