Comments on: Category Theory http://cosmicvariance.com/2006/05/21/category-theory/ Random samplings from a universe of ideas Fri, 25 Jul 2008 14:12:36 +0000 http://wordpress.org/?v=2.5.1 By: Fashionably Deconstructed - Asymptotia http://cosmicvariance.com/2006/05/21/category-theory/#comment-131969 Fashionably Deconstructed - Asymptotia Fri, 03 Nov 2006 20:56:32 +0000 http://cosmicvariance.com/?p=831#comment-131969 [...] Quite different from the hats in Harrods - remember those? - but quite a splendid display idea all the same. [...] [...] Quite different from the hats in Harrods - remember those? - but quite a splendid display idea all the same. [...]

]]> By: More Future Scientists Revealed! - Asymptotia http://cosmicvariance.com/2006/05/21/category-theory/#comment-118460 More Future Scientists Revealed! - Asymptotia Thu, 14 Sep 2006 15:40:35 +0000 http://cosmicvariance.com/?p=831#comment-118460 [...] This year I was unable to do so due to a trip across the Atlantic concerning the birth of my sister’s son (details of the london trip here, here, here and here; Last link has a fun trip to Harrods and to the Science Museum). But my USC colleague Chris Gould -the chief organisational engine behind the fair- has prepared hundreds of photographs again, and you can go and have a look here, and see some of the project descriptions also. [...] [...] This year I was unable to do so due to a trip across the Atlantic concerning the birth of my sister’s son (details of the london trip here, here, here and here; Last link has a fun trip to Harrods and to the Science Museum). But my USC colleague Chris Gould -the chief organisational engine behind the fair- has prepared hundreds of photographs again, and you can go and have a look here, and see some of the project descriptions also. [...]

]]> By: Shopping, Sightseeing, Science | Cosmic Variance http://cosmicvariance.com/2006/05/21/category-theory/#comment-25855 Shopping, Sightseeing, Science | Cosmic Variance Tue, 23 May 2006 01:25:26 +0000 http://cosmicvariance.com/?p=831#comment-25855 [...] I love to go and look at all the displays of food (pictures all down the right of this post so far), some good plain old-fashioned theme-park Englishness (both on the part of the store and staff on the one hand, and the customers on the other), and also some of the other displays too. Recall the pictures of the hats from my previous post. Dear Reader (and I’m not just talking to men here), if you don’t go and wander in the women’s “soft accessories” section, where on earth would you ever see such wonderful composition? If anybody thinks less of you for wandering in there, tell them from me they’re an idiot. [...] [...] I love to go and look at all the displays of food (pictures all down the right of this post so far), some good plain old-fashioned theme-park Englishness (both on the part of the store and staff on the one hand, and the customers on the other), and also some of the other displays too. Recall the pictures of the hats from my previous post. Dear Reader (and I’m not just talking to men here), if you don’t go and wander in the women’s “soft accessories” section, where on earth would you ever see such wonderful composition? If anybody thinks less of you for wandering in there, tell them from me they’re an idiot. [...]

]]> By: Clifford http://cosmicvariance.com/2006/05/21/category-theory/#comment-25839 Clifford Mon, 22 May 2006 23:16:05 +0000 http://cosmicvariance.com/?p=831#comment-25839 Oh. Good point. Ok.   :-( -cvj Oh. Good point. Ok.   :-(

-cvj

]]> By: Kea http://cosmicvariance.com/2006/05/21/category-theory/#comment-25838 Kea Mon, 22 May 2006 23:14:59 +0000 http://cosmicvariance.com/?p=831#comment-25838 Because it's mine! Because it’s mine!

]]> By: Clifford http://cosmicvariance.com/2006/05/21/category-theory/#comment-25836 Clifford Mon, 22 May 2006 22:57:39 +0000 http://cosmicvariance.com/?p=831#comment-25836 Hey! Why can't I have Kea's blue one? (Although the other choice is nice too)   :-) -cvj Hey! Why can’t I have Kea’s blue one? (Although the other choice is nice too)   :-)

-cvj

]]> By: Clifford http://cosmicvariance.com/2006/05/21/category-theory/#comment-25834 Clifford Mon, 22 May 2006 22:51:38 +0000 http://cosmicvariance.com/?p=831#comment-25834 [Inserted comment:] Yes, folks... Dear Rufus still can't stop himself or herself from reading, despite helpful suggestions, e.g., <a href="http://cosmicvariance.com/2006/04/26/relatively-pleasant/#comment-20191" rel="nofollow">here</a> and <a href="http://cosmicvariance.com/2006/04/26/relatively-pleasant/#comment-20192" rel="nofollow">here</a>, and still posts up amusing rude remarks to let us know (s)he's here. LOL! -cvj [Inserted comment:] Yes, folks… Dear Rufus still can’t stop himself or herself from reading, despite helpful suggestions, e.g., here and here, and still posts up amusing rude remarks to let us know (s)he’s here.

LOL!

-cvj

]]> By: citrine http://cosmicvariance.com/2006/05/21/category-theory/#comment-25830 citrine Mon, 22 May 2006 21:44:15 +0000 http://cosmicvariance.com/?p=831#comment-25830 Which of these hats would make good "thinking caps" for the Physicists here? Ummmmm.... the camoflage one with the red ribbon for Clifford, the turquoise one for JoAnne, the orange one for Risa and brown hats for Sean or Mark. Which of these hats would make good “thinking caps” for the Physicists here? Ummmmm…. the camoflage one with the red ribbon for Clifford, the turquoise one for JoAnne, the orange one for Risa and brown hats for Sean or Mark.

]]> By: spyder http://cosmicvariance.com/2006/05/21/category-theory/#comment-25815 spyder Mon, 22 May 2006 20:01:57 +0000 http://cosmicvariance.com/?p=831#comment-25815 I quite literally grew up with much of that rocket collection in my house. My father researched, designed, engineered and managed the building of several of those payload delivery systems. He also helped evaluate and analyze the intelligent reports on some of the other systems from the Soviet era that are displayed their as well in your photo. Thanks for the precious memories just from that one image. Now if only i hadn't been such a destructive little twit. I quite literally grew up with much of that rocket collection in my house. My father researched, designed, engineered and managed the building of several of those payload delivery systems. He also helped evaluate and analyze the intelligent reports on some of the other systems from the Soviet era that are displayed their as well in your photo. Thanks for the precious memories just from that one image. Now if only i hadn’t been such a destructive little twit.

]]> By: Plato http://cosmicvariance.com/2006/05/21/category-theory/#comment-25739 Plato Mon, 22 May 2006 14:47:22 +0000 http://cosmicvariance.com/?p=831#comment-25739 I am sure we'll get the full scoop on this when Clifford has time. I mean looking at the pictures above, does it seem <a href="http://en.wikipedia.org/wiki/Natural_%28category_theory%29" rel="nofollow">natural</a>? As a aging student, it is confusing. I am sure we’ll get the full scoop on this when Clifford has time.

I mean looking at the pictures above, does it seem natural?

As a aging student, it is confusing.

]]> By: Ambitwistor http://cosmicvariance.com/2006/05/21/category-theory/#comment-25720 Ambitwistor Mon, 22 May 2006 14:21:30 +0000 http://cosmicvariance.com/?p=831#comment-25720 Or are they <a href="http://en.wikipedia.org/wiki/Groupoid" rel="nofollow">groupoids of objects</a>? Or are they groupoids of objects?

]]> By: Rufus http://cosmicvariance.com/2006/05/21/category-theory/#comment-25700 Rufus Mon, 22 May 2006 13:39:46 +0000 http://cosmicvariance.com/?p=831#comment-25700 What happened to the science that was supposed to be on this blog? What happened to the science that was supposed to be on this blog?

]]> By: Plato http://cosmicvariance.com/2006/05/21/category-theory/#comment-25402 Plato Mon, 22 May 2006 05:43:00 +0000 http://cosmicvariance.com/?p=831#comment-25402 Just taking a wild stab at it. <a href="http://www.perimeterinstitute.ca/activities/scientific/seminarseries/alltalks.cfm?CurrentPage=1&SeminarID=748" rel="nofollow"><blockquote><i>In this language, many counterintuitive features of quantum theory turn out to be properties shared by the category of Hilbert spaces and the category of <b>cobordisms</b>, in which objects are choices of "space" and <b>emorphisms</b> are choices of "spacetime".</i></blockquote></a> Just taking a wild stab at it.


In this language, many counterintuitive features of quantum theory turn out to be properties shared by the category of Hilbert spaces and the category of cobordisms, in which objects are choices of “space” and emorphisms are choices of “spacetime”.

]]> By: Kea http://cosmicvariance.com/2006/05/21/category-theory/#comment-25398 Kea Mon, 22 May 2006 03:11:20 +0000 http://cosmicvariance.com/?p=831#comment-25398 Sigh. Oh, well. Not sure when I'll get to London next. Last time I was in Europe I managed to skip London, in a feat of master traveling, on a budget 14 hour trip from Sheffield to Grindelwald. Sigh. Oh, well. Not sure when I’ll get to London next. Last time I was in Europe I managed to skip London, in a feat of master traveling, on a budget 14 hour trip from Sheffield to Grindelwald.

]]> By: Clifford http://cosmicvariance.com/2006/05/21/category-theory/#comment-25265 Clifford Sun, 21 May 2006 22:03:02 +0000 http://cosmicvariance.com/?p=831#comment-25265 No... did not occur to me. Old one going strong. Incidentally, it was bought in a famous department store in Paris during the Strings 2004 conference there. So I could make a nice resonance of I got my next hat in a Beijing department store this June. -cvj No… did not occur to me. Old one going strong. Incidentally, it was bought in a famous department store in Paris during the Strings 2004 conference there. So I could make a nice resonance of I got my next hat in a Beijing department store this June.

-cvj

]]> By: i http://cosmicvariance.com/2006/05/21/category-theory/#comment-25245 i Sun, 21 May 2006 21:54:26 +0000 http://cosmicvariance.com/?p=831#comment-25245 did you get a new hat for your LA summer? did you get a new hat for your LA summer?

]]> By: Cynthia http://cosmicvariance.com/2006/05/21/category-theory/#comment-25242 Cynthia Sun, 21 May 2006 21:53:06 +0000 http://cosmicvariance.com/?p=831#comment-25242 Oh really...quite a twist on logical reasoning. Oh really…quite a twist on logical reasoning.

]]> By: Clifford http://cosmicvariance.com/2006/05/21/category-theory/#comment-25227 Clifford Sun, 21 May 2006 21:41:29 +0000 http://cosmicvariance.com/?p=831#comment-25227 Actually, the Rockets and Tools were made with advanced Hat science and technology. Little known fact. -cvj Actually, the Rockets and Tools were made with advanced Hat science and technology. Little known fact.

-cvj

]]> By: Cynthia http://cosmicvariance.com/2006/05/21/category-theory/#comment-25224 Cynthia Sun, 21 May 2006 21:39:53 +0000 http://cosmicvariance.com/?p=831#comment-25224 Is this hat collection made with advanced rocket science or primitive tool science? Is this hat collection made with advanced rocket science or primitive tool science?

]]> By: Clifford http://cosmicvariance.com/2006/05/21/category-theory/#comment-25223 Clifford Sun, 21 May 2006 21:39:30 +0000 http://cosmicvariance.com/?p=831#comment-25223 Kea, Yea, it's pretty lovely isn't it? Sadly, Harrods is closed now, and I must be checked in for my flight before it opens again. (So the eyelid fluttering, powerful as it probably is, won't get the job done.) Sorry! ;-) And before anyone flutters at me (don't get me wrong...I like the fluttering) to ask me for a hammer or a Saturn V rocket..... Same story. Cheers, -cvj Kea, Yea, it’s pretty lovely isn’t it? Sadly, Harrods is closed now, and I must be checked in for my flight before it opens again. (So the eyelid fluttering, powerful as it probably is, won’t get the job done.) Sorry! ;-)

And before anyone flutters at me (don’t get me wrong…I like the fluttering) to ask me for a hammer or a Saturn V rocket….. Same story.

Cheers,

-cvj

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