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## Main Question or Discussion Point

When the direct product is in the exponent of some variable, how is it defined?

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- #1

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When the direct product is in the exponent of some variable, how is it defined?

- #2

haushofer

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I would say that it's defined via the Taylor expansion. Can you give the explicit expression?

- #3

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Like O(3) ^ direct product blah

- #4

haushofer

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[itex]

G^{\otimes}

[/itex]

? I never saw such a thing, but I would then guess it's a notation for

[itex]

G \otimes G \otimes G \otimes \ldots \otimes G

[/itex]

Does that make sense in your context? Otherwise you should give the exact expression in LaTeX :)

- #5

clem

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t is defined either by a Taylor expansion or by an eigenfunction expansion.

- #6

George Jones

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There seems to be confusion in this thread (at least for me).When the direct product is in the exponent of some variable, how is it defined?

Please write down clearly, completely, and precisely what you mean, or give a reference to a text or paper which uses the notation that you want want clarified.

- #7

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Something like that. What does it mean?You mean something like

[itex]

G^{\otimes}

[/itex]

Last edited by a moderator:

- #8

George Jones

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Do you mean "something like" or "exactly like"? You have to be precise.Something like that. What does it mean?

Do you mean

[tex]\overset{k}{\otimes}V?[/tex]

This is standard notation for

[tex]V \otimes V \otimes \ldots \otimes V[/tex]

with [itex]V[/itex] repeated [itex]k[/itex] times.

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- #10

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It's the tensor product of N copies of rho.

- #11

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thanks

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