Questions on attributes of functions in Mathematica.

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13
votes
2answers
299 views

SetAttributes[f,Flat]: Why the order dependence?

I'm experiencing a strange phenomenon. Here's a (quite artificial) test case: The following definition work just fine: ...
23
votes
2answers
681 views

Block attributes of Equal

I answered “Equating matrices (or higher order tensors) element-wise” with: ...
16
votes
1answer
345 views

How do you set attributes on SubValues?

SubValues, as discussed in a previous question, are declared as follows ...
9
votes
4answers
360 views

how to differentiate formally?

I have been wrapping my head around this for a while now and I have not found a solution so far. I want to work with an arbitrary number of variables in mathematica and use some built in functions. ...
4
votes
3answers
167 views

Define an 'inner product' with AngleBracket

I want to define my own little 'Inner Product' function satisfying properties of linearity and commutativity, and I'd like to use the "$\langle$" and "$\rangle$" symbols to output my results. For ...
6
votes
1answer
140 views

DiracDelta attributes

Is there any reason why DiracDelta isn't a NumericFunction but DiracComb is? I just ate a ...
5
votes
2answers
122 views

Why rule does not work if Flat attribute?

The following works: ...