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Mirrors > Home > MPE Home > Th. List > xmulm1 | Structured version Visualization version GIF version |
Description: Extended real version of mulm1 11686. (Contributed by Mario Carneiro, 20-Aug-2015.) |
Ref | Expression |
---|---|
xmulm1 | โข (๐ด โ โ* โ (-1 ยทe ๐ด) = -๐๐ด) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1re 11245 | . . . . 5 โข 1 โ โ | |
2 | rexneg 13223 | . . . . 5 โข (1 โ โ โ -๐1 = -1) | |
3 | 1, 2 | ax-mp 5 | . . . 4 โข -๐1 = -1 |
4 | 3 | oveq1i 7430 | . . 3 โข (-๐1 ยทe ๐ด) = (-1 ยทe ๐ด) |
5 | 1xr 11304 | . . . 4 โข 1 โ โ* | |
6 | xmulneg1 13281 | . . . 4 โข ((1 โ โ* โง ๐ด โ โ*) โ (-๐1 ยทe ๐ด) = -๐(1 ยทe ๐ด)) | |
7 | 5, 6 | mpan 689 | . . 3 โข (๐ด โ โ* โ (-๐1 ยทe ๐ด) = -๐(1 ยทe ๐ด)) |
8 | 4, 7 | eqtr3id 2782 | . 2 โข (๐ด โ โ* โ (-1 ยทe ๐ด) = -๐(1 ยทe ๐ด)) |
9 | xmullid 13292 | . . 3 โข (๐ด โ โ* โ (1 ยทe ๐ด) = ๐ด) | |
10 | xnegeq 13219 | . . 3 โข ((1 ยทe ๐ด) = ๐ด โ -๐(1 ยทe ๐ด) = -๐๐ด) | |
11 | 9, 10 | syl 17 | . 2 โข (๐ด โ โ* โ -๐(1 ยทe ๐ด) = -๐๐ด) |
12 | 8, 11 | eqtrd 2768 | 1 โข (๐ด โ โ* โ (-1 ยทe ๐ด) = -๐๐ด) |
Colors of variables: wff setvar class |
Syntax hints: โ wi 4 = wceq 1534 โ wcel 2099 (class class class)co 7420 โcr 11138 1c1 11140 โ*cxr 11278 -cneg 11476 -๐cxne 13122 ยทe cxmu 13124 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-cnex 11195 ax-resscn 11196 ax-1cn 11197 ax-icn 11198 ax-addcl 11199 ax-addrcl 11200 ax-mulcl 11201 ax-mulrcl 11202 ax-mulcom 11203 ax-addass 11204 ax-mulass 11205 ax-distr 11206 ax-i2m1 11207 ax-1ne0 11208 ax-1rid 11209 ax-rnegex 11210 ax-rrecex 11211 ax-cnre 11212 ax-pre-lttri 11213 ax-pre-lttrn 11214 ax-pre-ltadd 11215 ax-pre-mulgt0 11216 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5576 df-po 5590 df-so 5591 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-er 8725 df-en 8965 df-dom 8966 df-sdom 8967 df-pnf 11281 df-mnf 11282 df-xr 11283 df-ltxr 11284 df-le 11285 df-sub 11477 df-neg 11478 df-xneg 13125 df-xmul 13127 |
This theorem is referenced by: (None) |
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