Back to Home

Blackholes Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Blackholes I | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Bruce (or Alex)...

Forum List | Follow Ups | Post Message | Back to Thread Topics
Posted by Mark on November 7, 2001 05:05:40 UTC

You're fluent with the language of GR, so perhaps you could please tell me this...

You know the difference between scalar and vector... and I'm sure you know that Rank-0 tensor = "scalar", Rank-1 tensor = "vector", Rank-2 tensor commonly refered to as just plain "tensor"... and so on...

My question is: if Rank-2 tensor is mathematicaly represented by n x n matrix (n being number of dimensions), then is a Rank-3 tensor represented by an n x n x n matrix??

Is there such a thing as a three dimensional (and higher dimensional) matrix? If so... How ODD!!

Are these 3D, (4D, 5D and so on...) matrices applied in abstract theoretical physics (string theory or supergravity)?

Follow Ups:

    Login to Post
    Additional Information
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2023 John Huggins All Rights Reserved
    Forum posts are Copyright their authors as specified in the heading above the post.
    "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
    are trademarks of John Huggins