[FRIAM] "manifold" in mathematics

2009-08-04 Thread Nicholas Thompson
I wonder if anybody has any comment to make on the following passage from EB holt? (Remember, I am the guy who tends to ask questions of PEOPLE when he should look them up, so feel free to ignore me here.) Holt (1914) writes: "If one is walking in the woods, and remarks that "All this is Epp

Re: [FRIAM] "manifold" in mathematics

2009-08-04 Thread Jochen Fromm
This is an interesting use of "manifold". In mathematics, a manifold has a well-defined meaning. The structure of a manifold is encoded by a collection of charts that form an atlas. A chart is a mapping between the manifold and a simple (euclidean) space, see http://en.wikipedia.org/wiki/Manifol

Re: [FRIAM] "manifold" in mathematics

2009-08-04 Thread Roger Critchlow
A manifold is something that can't be a function because it is multi-valued where a function must be single-valued. A circle, the set of points which satisfy the equation x^2 + y^2 = r^2, is a manifold of points because there are two values of y that satisfy the equation for each value of x, -r <

Re: [FRIAM] "manifold" in mathematics

2009-08-04 Thread Jochen Fromm
A manifold can be described as a complex patchwork made of many patches. If we try to describe self-consciousness as a manifold then we get - the patch of a strange loop associated with insight in confusion (according to Douglas Hofstadter) - the patch of an imaginary "center of narrative g

Re: [FRIAM] "manifold" in mathematics

2009-08-04 Thread Nicholas Thompson
thlink.net/~nickthompson/naturaldesigns/ > [Original Message] > From: Jochen Fromm > To: The Friday Morning Applied Complexity Coffee Group > Date: 8/4/2009 6:31:57 PM > Subject: Re: [FRIAM] "manifold" in mathematics > > A manifold can be described as a > complex pa

Re: [FRIAM] "manifold" in mathematics

2009-08-04 Thread russell standish
as S. Thompson > Emeritus Professor of Psychology and Ethology, > Clark University (nthomp...@clarku.edu) > http://home.earthlink.net/~nickthompson/naturaldesigns/ > > > > > > [Original Message] > > From: Jochen Fromm > > To: The Friday Morning Applied C

Re: [FRIAM] "manifold" in mathematics

2009-08-04 Thread Douglas Roberts
> > > > Nick > > > > Nicholas S. Thompson > > Emeritus Professor of Psychology and Ethology, > > Clark University (nthomp...@clarku.edu) > > http://home.earthlink.net/~nickthompson/naturaldesigns/<http://home.earthlink.net/%7Enickthompson/naturaldesigns/>

Re: [FRIAM] "manifold" in mathematics

2009-08-04 Thread Robert Cordingley
kthompson/naturaldesigns/ [Original Message] From: Jochen Fromm To: The Friday Morning Applied Complexity Coffee Group Date: 8/4/2009 6:31:57 PM Subject: Re: [FRIAM] "manifold" in mathematics A manifold can be described as a complex patchwork made of many patches. If we try to describe

Re: [FRIAM] "manifold" in mathematics

2009-08-04 Thread Nicholas Thompson
, Clark University (nthomp...@clarku.edu) http://home.earthlink.net/~nickthompson/naturaldesigns/ - Original Message - From: Robert Cordingley To: The Friday Morning Applied Complexity Coffee Group Sent: 8/4/2009 8:03:00 PM Subject: Re: [FRIAM] "manifold" in mathematics So to

Re: [FRIAM] "manifold" in mathematics

2009-08-05 Thread qef
definition of manifold, as Roger gave us, or is the metaphor missing something (or am I)? - Claiborne Booker - -Original Message- From: Nicholas Thompson To: friam@redfish.com Sent: Wed, Aug 5, 2009 12:39 am Subject: Re: [FRIAM] "manifold" in mathematics Is an

Re: [FRIAM] "manifold" in mathematics

2009-08-05 Thread ERIC P. CHARLES
Of course, it would be unreasonable to expect Holt to conform to the modern definition of "manifold", as formalized mathematics has changed quite a bit in the last 100 years. While it is not quite as conceptually elaborate as it could be, our friend wikipedia has a bit on the history of the term (h

Re: [FRIAM] "manifold" in mathematics

2009-08-05 Thread Nicholas Thompson
essor of Psychology and Ethology, Clark University (nthomp...@clarku.edu) http://home.earthlink.net/~nickthompson/naturaldesigns/ - Original Message - From: To: Friam@redfish.com Sent: 8/5/2009 5:57:03 AM Subject: Re: [FRIAM] "manifold" in mathematics Let me add another in

Re: [FRIAM] "manifold" in mathematics

2009-08-05 Thread Steve Smith
q...@aol.com wrote: Let me add another inquiry to this - how do we reconcile this notion of manifold with the idea of self-similarity? If Epping Forest is a manifold, but the leaves and twigs are not, yet the leaves and twigs have some self-similarity, is Holt truly thinking in terms of the

Re: [FRIAM] "manifold" in mathematics

2009-08-05 Thread Owen Densmore
Hi Nick. This is an interesting discussion on the concept of Manifolds. But I sense you have a wider interest than just this one word, right? My guess is one of the most important books in this field is Spivak's Calculus on Manifolds. Thus Spivak's interest was in the unification of ide

Re: [FRIAM] "manifold" in mathematics

2009-08-05 Thread Steve Smith
Owen brings up an interesting (and important in it's relevance?) question... Where is your interest? History/Philosophy of Mathematics? Fascination with words and language? As a component of CAS? As a core mathematical theme to be mastered, somewhat like the epsilon/delta concept of the

Re: [FRIAM] "manifold" in mathematics

2009-08-05 Thread russell standish
On Wed, Aug 05, 2009 at 10:37:58AM -0600, Nicholas Thompson wrote: > There is a topologist on the list (at least one) who, I am hoping, will offer > at least one more definition of manifold. I say hoping, because at present, > I dont understand why "set" or "metaset" is not a perfectly good def

Re: [FRIAM] "manifold" in mathematics

2009-08-05 Thread Nicholas Thompson
f Psychology and Ethology, Clark University (nthomp...@clarku.edu) http://home.earthlink.net/~nickthompson/naturaldesigns/ - Original Message - From: ERIC P. CHARLES To: Nicholas Thompson Sent: 8/5/2009 9:48:04 PM Subject: Re: [FRIAM] "manifold" in mathematics Nick I'

Re: [FRIAM] "manifold" in mathematics

2009-08-06 Thread John Kennison
Wednesday, August 05, 2009 12:49 PM To: friam@redfish.com; nickthomp...@earthlink.net Cc: John Kennison Subject: Re: [FRIAM] "manifold" in mathematics On 5 Aug 2009 at 10:37, Nicholas Thompson wrote: > There is a topologist on the list (at least one) Before attempting a substantive r