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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 15280 | . 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 6492 (class class class)co 7360 ℂcc 11027 − cmin 11368 abscabs 15187 |
| 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 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| 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-rmo 3343 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-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 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 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-er 8636 df-en 8887 df-dom 8888 df-sdom 8889 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-2 12235 df-cj 15052 df-re 15053 df-im 15054 df-abs 15189 |
| This theorem is referenced by: rlimuni 15503 climuni 15505 2clim 15525 rlimrecl 15533 subcn2 15548 reccn2 15550 climcau 15624 caucvgrlem 15626 serf0 15634 mertenslem2 15841 xrsxmet 24785 elcncf2 24867 cnllycmp 24933 dvlip 25970 c1lip1 25974 dvfsumrlim2 26009 dvfsum2 26011 ftc1a 26014 aalioulem3 26311 ulmcaulem 26372 ulmcau 26373 ulmbdd 26376 ulmcn 26377 ulmdvlem1 26378 logcnlem4 26622 ssscongptld 26799 chordthmlem3 26811 chordthmlem4 26812 lgamucov 27015 ftalem2 27051 logfacrlim 27201 dchrisumlem3 27468 dchrisum0lem1b 27492 mulog2sumlem2 27512 pntrlog2bndlem3 27556 smcnlem 30783 constrrtcc 33895 iconstr 33926 qqhucn 34152 dnibndlem2 36755 dnibndlem6 36759 dnibndlem8 36761 dnibnd 36767 unbdqndv2lem1 36785 knoppndvlem10 36797 knoppndvlem15 36802 ftc1anclem8 38035 irrapxlem3 43270 irrapxlem5 43272 pell14qrgt0 43305 acongeq 43429 absimlere 45925 limcrecl 46077 islpcn 46085 lptre2pt 46086 0ellimcdiv 46095 limclner 46097 dvbdfbdioolem2 46375 ioodvbdlimc1lem1 46377 ioodvbdlimc1lem2 46378 ioodvbdlimc2lem 46380 fourierdlem42 46595 ioorrnopnlem 46750 smflimlem4 47220 |
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