# All Questions

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### Can we teach Mathematica about functional differentiation?

The key relation for functional differentiation is $$\frac{\delta}{\delta f(y)}f(x)=\delta(x-y),$$ where $\delta(x-y)$ is the Dirac delta function, and the usual properties of differentiation (e.g. ...
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### How to modify MagnificationPopUp menu values in notebooks [duplicate]

The default options in a MagnificationPopUp menu (50, 75, 50, 100, 125, 200, 300) are sometimes not sufficient to meet all user's needs. This may have more applicability when creating user ...
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### Communication between local kernels

this is my first post but you have already helped me so many times that I have to start by saying thanks a lot! I have a really long calculation to do, and I have used the Evaluation->Kernel ...