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9791Re: [UFOnet] Kaluza's at the blackboard

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  • Roger Anderton
    Sep 4, 2001
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      Ted
      I have never paid much attention to signatures.
      The 4D metric is + + + - and its dual - - - + .
      But if you introduce the square root of minus 1, you can make the signature
      + + + +.
      Why are signatures of interest to you?
      Are you doing anything interesting with these n D theories?

      Cheers Roger
      ----- Original Message -----
      From: "Ted" <Ted@...>
      To: <ufonet@yahoogroups.com>
      Sent: Monday, September 03, 2001 7:46 PM
      Subject: Re: [UFOnet] Kaluza's at the blackboard


      Hi Roger,

      here's another nD to add:

      Heim 6D, ca. 1940

      It's signature is + + + - - - giving a line element
      ds² = x² + y² + z² - (ct)² - w² - v²
      which consists of 3 space-like and 3 time-like dimensions.

      What are the signatures of the other theories ?

      Greetings,
      Ted
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