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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 15287 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (abs‘(𝐴 − 𝐵)) = (abs‘(𝐵 − 𝐴))) | |
| 4 | 1, 2, 3 | syl2anc 590 | 1 ⊢ (𝜑 → (abs‘(𝐴 − 𝐵)) = (abs‘(𝐵 − 𝐴))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 ∈ wcel 2119 ‘cfv 6492 (class class class)co 7363 ℂcc 11034 − cmin 11375 abscabs 15194 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-nul 5235 ax-pow 5301 ax-pr 5369 ax-un 7685 ax-resscn 11093 ax-1cn 11094 ax-icn 11095 ax-addcl 11096 ax-addrcl 11097 ax-mulcl 11098 ax-mulrcl 11099 ax-mulcom 11100 ax-addass 11101 ax-mulass 11102 ax-distr 11103 ax-i2m1 11104 ax-1ne0 11105 ax-1rid 11106 ax-rnegex 11107 ax-rrecex 11108 ax-cnre 11109 ax-pre-lttri 11110 ax-pre-lttrn 11111 ax-pre-ltadd 11112 ax-pre-mulgt0 11113 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-nel 3040 df-ral 3055 df-rex 3065 df-rmo 3345 df-reu 3346 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-iun 4930 df-br 5080 df-opab 5142 df-mpt 5161 df-tr 5187 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 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-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7320 df-ov 7366 df-oprab 7367 df-mpo 7368 df-om 7814 df-2nd 7939 df-frecs 8228 df-wrecs 8259 df-recs 8308 df-rdg 8346 df-er 8640 df-en 8891 df-dom 8892 df-sdom 8893 df-pnf 11179 df-mnf 11180 df-xr 11181 df-ltxr 11182 df-le 11183 df-sub 11377 df-neg 11378 df-div 11806 df-nn 12173 df-2 12242 df-cj 15059 df-re 15060 df-im 15061 df-abs 15196 |
| This theorem is referenced by: rlimuni 15510 climuni 15512 2clim 15532 rlimrecl 15540 subcn2 15555 reccn2 15557 climcau 15631 caucvgrlem 15633 serf0 15641 mertenslem2 15848 xrsxmet 24800 elcncf2 24882 cnllycmp 24948 dvlip 25985 c1lip1 25989 dvfsumrlim2 26024 dvfsum2 26026 ftc1a 26029 aalioulem3 26325 ulmcaulem 26384 ulmcau 26385 ulmbdd 26388 ulmcn 26389 ulmdvlem1 26390 logcnlem4 26634 ssscongptld 26811 chordthmlem3 26823 chordthmlem4 26824 lgamucov 27026 ftalem2 27062 logfacrlim 27212 dchrisumlem3 27479 dchrisum0lem1b 27503 mulog2sumlem2 27523 pntrlog2bndlem3 27567 smcnlem 30793 constrrtcc 33926 iconstr 33957 qqhucn 34183 dnibndlem2 36792 dnibndlem6 36796 dnibndlem8 36798 dnibnd 36804 unbdqndv2lem1 36822 knoppndvlem10 36834 knoppndvlem15 36839 ftc1anclem8 38074 irrapxlem3 43276 irrapxlem5 43278 pell14qrgt0 43311 acongeq 43435 absimlere 45929 limcrecl 46081 islpcn 46089 lptre2pt 46090 0ellimcdiv 46099 limclner 46101 dvbdfbdioolem2 46379 ioodvbdlimc1lem1 46381 ioodvbdlimc1lem2 46382 ioodvbdlimc2lem 46384 fourierdlem42 46599 ioorrnopnlem 46754 smflimlem4 47224 |
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