9791Re: [UFOnet] Kaluza's at the blackboard
- Sep 4, 2001Ted
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?
----- Original Message -----
From: "Ted" <Ted@...>
Sent: Monday, September 03, 2001 7:46 PM
Subject: Re: [UFOnet] Kaluza's at the blackboard
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 ?
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