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Apr
8
comment Integral evaluation taking too long
@NoLeafClover Of course I can't really guess what your goal is. But the step functions have no effect for s > t, and the remaining terms don't go to zero, so the infinite integral goes to infinity.
Apr
8
comment Integral evaluation taking too long
@SjoerdC.deVries The integrand goes to 1 outside the unit box, so it doesn't converge.
Apr
8
comment Integral evaluation taking too long
It may still be good to have an answer here, since people who encounter similar problems should be encouraged to do some sanity checking before posting to StackExchange...
Apr
8
revised Integral evaluation taking too long
added 106 characters in body
Apr
8
answered Integral evaluation taking too long
Apr
7
comment Efficiently filling area with disks located at certain points
Another cool related question is How can I pack circles of different sizes into a spiral?
Apr
7
comment Sequence of data in 3D, joining the points
I would have used your method, that's why I upvoted it... My answer was just motivated by the apparent "other problem" of the OP, which I don't understand yet.
Apr
7
answered Using ChemicalData to make molecule graphics
Apr
7
comment Using ChemicalData to make molecule graphics
Somewhat related (for post-processing): Can a LatticeData image be displayed in a space filled fashion.
Apr
7
answered Sequence of data in 3D, joining the points
Apr
7
comment Sequence of data in 3D, joining the points
What do you mean by "it will not work"?
Apr
7
revised Sequence of data in 3D, joining the points
added 12 characters in body
Apr
6
answered Defining a non-commutative operator algebra in Mathematica
Apr
6
revised How do I represent a system dynamics feedback loop?
Added exact time
Apr
6
comment How do I represent a system dynamics feedback loop?
Maybe that's because I'm in a different time zone? No, the counter variable n in NestList simply starts at 1 while your clock starts at 0. It's just a numbering convention.
Apr
6
comment How do I represent a system dynamics feedback loop?
All you need to do is choose the rate and starting value to be the same as in your question, and use the function I posted. I've updated the answer.
Apr
6
revised How do I represent a system dynamics feedback loop?
added 205 characters in body
Apr
6
comment Defining a non-commutative operator algebra in Mathematica
I would probably define a separate function like commutatorExpand and/or commutatorReduce that does the transformations in the direction you want.
Apr
6
comment Defining a non-commutative operator algebra in Mathematica
Related: Differential geometry add-ons for Mathematica.
Apr
6
answered How do I represent a system dynamics feedback loop?