1,463 reputation
617
bio website quantum.at
location Vienna, Austria
age
visits member for 3 years, 1 month
seen Mar 13 at 13:07

PhD student in Theoretical Physics

Research interests include Quantum Optomechanics and Quantum Optics


Mar
8
comment FindMinimum's WorkingPrecision behaviour
Great. Thanks for the additional info!
Mar
8
accepted FindMinimum's WorkingPrecision behaviour
Mar
5
comment FindMinimum's WorkingPrecision behaviour
@OleksandrR. NMinimize actually worked quite well for my problem, no real difference in speed. Would you post your comment as an answer? I don't think something else will come up...
Mar
2
comment FindMinimum's WorkingPrecision behaviour
@OleksandrR., thanks for the insight! I thought about using NMinimize but the objective function is expensive to evaluate so I refrained from trying it. Will do tomorrow.
Mar
2
asked FindMinimum's WorkingPrecision behaviour
Feb
2
awarded  Yearling
Dec
3
comment Is Replace doing double work?
Totally blind guess and probably wrong, but I could imagine this is connected to how Mathematica determines if an expression changed (i.e., when to stop computing)...
Dec
3
comment Is Replace doing double work?
Replace does a depth-first postorder traversal of the expression tree. See this very interesting thread for a discussion of the topic.
Dec
2
awarded  Nice Answer
Nov
20
comment Why does LyapunovSolve solve non-standard form?
I agree that this is a little strange, as with this definition Q will normally not be positive definite. Also, RiccatiSolve solves the form corresponding to what you call "standard form". But why is this important for you?
Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Aug
21
comment Integral converging in M9 but not in M10
I can't reproduce your problem with ParallelTable. On the other hand I don't understand the significance of Quit here. In what order should I evaluate which commands? Can you elaborate pls?
Aug
21
comment V10 interface problems
I'm on Linux and I've been experiencing (1) for many versions and still do, so I'm pretty much used to it. I think it's a problem with the graphics toolkit they are using. For me the text field is restored when I click into the general area where it's supposed to be. I can also confirm (3), but again, I've had that problem in earlier versions.
Aug
20
comment Why isn't Lookup treated like other symbols?
You seem to misunderstand what ´TempHead /: Lookup[t1_TempHead, t2_TempHead]´ actually does (which caused some confusion for RunnyKine and m_goldberg, see below): It adds a definition to (the UpValues) of ´TempHead´, not to ´Lookup´. That's why unprotecting ´Lookup´ doesn't help of course.
Aug
20
comment Integral converging in M9 but not in M10
Of course it can, you are changing the state of your Mathematica session after all. I would suggest that you go through your code step by step and see which symbols/expressions evaluate to something unexpected. Start from the bottom and work your way up. I don't think, however, that someone will do this work for you.
Aug
20
comment Integral converging in M9 but not in M10
@Zet I can confirm Michael's observation that this code gives the desired result on V9 and V10 (on Linux, but it's very unlikely this makes a difference)
Aug
20
comment Integral converging in M9 but not in M10
@Zet Did you restart your kernel?
Aug
20
comment Algebraic expressions on pure functions
Just curious, why are you making the postfix/prefix distinction?
Aug
17
comment A problem about generating `[]` automatically
Not an answer to the original question, but you can change keybindings as described here