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FJ Rolfes
Oct11-11, 07:31 AM
I tried putting this in the math forum, but got no response:

I can find various derivations of ∫ dθ = 0 which are satisfactory, but none of ∫dθ θ =1.

Cheng and Li says it's just a normalization convention, of course that assumes that the integral is finite.

Is this just a matter of definition, or is there a better reason that that?

Thanks very much !

chrispb
Oct11-11, 08:56 PM
As far as I remember, it's a definition.

FJ Rolfes
Oct13-11, 07:24 PM
Thank you.

The rules for differentiation seems natural enough, and they do seem to give arguments for ∫dθ = 0, but not for ∫dθ θ =1.