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michael_nielsen's profile
michael_nielsen
michael_nielsen
michael_nielsen
@michael_nielsen

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michael_nielsen

@michael_nielsen

Searching for the numinous. Co-purveyor of https://quantum.country/ 

San Francisco, CA
michaelnielsen.org
Joined July 2008

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    1. Christopher Holden‏ @maximalideal 7 Dec 2017
      • Report Tweet

      Christopher Holden Retweeted michael_nielsen

      .@michael_nielsen and @shancarter have you heard of Hestenes’ geometric algebra? https://en.wikipedia.org/wiki/Geometric_algebra … Primitive that was there all alonghttps://twitter.com/michael_nielsen/status/937936393027719168 …

      Christopher Holden added,

      michael_nielsen @michael_nielsen
      Powerful new representations often appear strange at first; in some sense, it is the task of the designer to amplify that strangeness (from https://distill.pub/2017/aia/  ) pic.twitter.com/mGbLcoAOp8
      Show this thread
      1 reply 0 retweets 0 likes
    2. michael_nielsen‏ @michael_nielsen 7 Dec 2017
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      Replying to @maximalideal @shancarter

      Yes, I know geometric algebra. Do you happen to know of any reasonably deep results which are better expressed in terms of geometric algebra than not?

      1 reply 0 retweets 1 like
    3. michael_nielsen‏ @michael_nielsen 7 Dec 2017
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      Replying to @michael_nielsen @maximalideal @shancarter

      An analogous situation: I was somewhat skeptical of ideas like the exterior calculus until I saw it used to greatly simplify the Maxwell equations (and other gauge theories).

      1 reply 0 retweets 0 likes
      michael_nielsen‏ @michael_nielsen 7 Dec 2017
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      Replying to @michael_nielsen @maximalideal @shancarter

      I'd love to know of a similar change in worldview enabled by geometric algebra. (Here's a general gauge theory written using the exterior derivative and Hodge-*. Way nicer, in many ways, than the standard Maxwell equations.)pic.twitter.com/WEG93RAaDn

      4:42 PM - 7 Dec 2017
      • 1 Like
      • Dan Brickley
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        1. Steven De Keninck‏ @enkimute 13 Dec 2017
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          Replying to @michael_nielsen @maximalideal @shancarter

          In R(1,3) (clifford spacetime algebra) the maxwell equations reduce to a single one : (F is a bivector, J a vector). For much, much more see Hestenes "New foundations for classical mechanics".pic.twitter.com/1UHu2LfJMr

          0 replies 0 retweets 2 likes
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