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Topic: Uniqueness of differential
Replies: 1   Last Post: Feb 23, 2008 4:11 PM

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Rodolfo Medina

Posts: 15
Registered: 8/21/06
Uniqueness of differential
Posted: Feb 22, 2008 11:40 AM
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Sorry if this is off topic.

Can anybody suggest a proper place to ask the following question:
how to demonstrate the uniqueness of the differential of a function?
Given a function f, its differential in P_0 is a linear map L such that

lim f(P) - f(P_0) - L(P_0 - P)
P->P_0 -------------------------- = 0
|P_0 - P|

Thanks for any indication

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