JeremyHahn comments on Why is the A-Theory of Time Attractive? - Less Wrong

6 Post author: Tyrrell_McAllister 31 October 2014 11:11PM

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Comment author: JeremyHahn 04 November 2014 12:42:08AM 1 point [-]

I apologize for the snipy remark, which was a product of my general frustrations with life at the moment.

I was trying to strongly stress the difference between (1) an abstract R-torsor (B-theory), and (2) R viewed as an R-torsor (your patch on A-theory).

Any R-torsor is isomorphic to R viewed as an R-torsor, but that isomorphism is not unique. My understanding is that physicists view such distinctions as useless pendantry, but mathematicians are for better or worse trained to respect them. I do not view an abstract R-torsor as having a basis that can be changed.

Comment author: Luke_A_Somers 04 November 2014 02:28:20PM 0 points [-]

Indeed it wouldn't. A function space defined on an R-torsor would have a basis which you could change.