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Article #151Re: A point and its position vector, your comment please
From: Oliver Low
Date: Sat, 28 Mar 1998 00:00
Date: Sat, 28 Mar 1998 00:00
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1700 bytes
In article <ma-2703981552050001@mac89.maths.uwa.edu.au>, ma <ma@maths.uwa.edu.au> writes >Assume that a coordinate system of xyz-axes has been chosen. Then both a >point P and its position vector \uparrow(OP) are represented by the same >triple (a,b,c). Hence we are allowed to write P=(a,b,c)=\uparrow(OP), i.e. >P=\uparrow(OP). With this simple notation, we have the simple formula: >\uparrow(AB)=B-A. > >Question: DO you accept or reject the notation P=\uparrow(OP)? >I DO need your public opinion URGENTLY. Please cast you vote, one way or <snip> >Dr. MA, Math Dept, UWA > >-------------------------------------------------------------------- > For me, no. Not the same. The point p\in R^3 is completely and utterly different from the vector v\in V_3(R), a vector space. :) -- Oliver Low HTTP://www.netmatrix.demon.co.uk N.B. to reply, remove the obvious SPAM bit from the address.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f458d,333e3e48a480a9d8 X-Google-Attributes: gidf458d,public X-Google-Thread: 103aae,333e3e48a480a9d8 X-Google-Attributes: gid103aae,public X-Google-Thread: 1065a2,333e3e48a480a9d8 X-Google-Attributes: gid1065a2,public From: Oliver Low <ojl@netmatrix.demon.co.uk> Subject: Re: A point and its position vector, your comment please Date: 1998/03/28 Message-ID: <hhoPAmAF7GH1EwTy@netmatrix.demon.co.uk> X-Deja-AN: 338483343 X-NNTP-Posting-Host: netmatrix.demon.co.uk [194.222.156.118] References: <ma-2703981552050001@mac89.maths.uwa.edu.au> Organization: Net Matrix MIME-Version: 1.0 Reply-To: Oliver Low <ojl@_SPICED_HAM_netmatrix.demon.co.uk> Newsgroups: uk.education.maths,k12.education.math,fj.education.math