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Apr
12
reviewed Close Create an array with certain conditions and use it to fill a matrix
Apr
12
reviewed Close Why won't equal trig expressions simplify to the same form?
Apr
12
reviewed Edit Streamline Plot from velocity discrete values
Apr
12
revised Streamline Plot from velocity discrete values
improved formatting
Apr
12
comment Function in Mathematica 10.1, but not in CDF Player 10.0.2
The Villegas-Gayley trick may be of some help here.
Apr
11
reviewed Looks OK What does this “Cos[1.theta]”mean in Mathematica?
Apr
11
comment How to draw a Circle in 3D on a sphere
@kuba please elaborate.
Apr
11
reviewed Close How to draw a Circle in 3D on a sphere
Apr
11
comment How to draw a Circle in 3D on a sphere
If the center of the circle lies on the sphere it is impossible that the circle itself lies on the sphere.
Apr
11
reviewed Looks OK Elegant functional equivalent to a nested loop?
Apr
11
comment Define a matrix depending on variable in Mathematica
ClearAll[getA];getA[kappa_,n_] :=Table[ 2*Cos[(2*pi/n)*(abs (j - i))*kappa],{i,n},{I,n}];
Apr
11
comment Define a matrix depending on variable in Mathematica
BTW you could have filled your table directly without initialization and without For loops using Table.
Apr
11
comment Define a matrix depending on variable in Mathematica
Unlike Python mathematica's lists go from 1 to n
Apr
11
reviewed No Action Needed Define a matrix depending on variable in Mathematica
Apr
10
comment Why do lookup times in Dataset and Association differ by orders of magnitude?
If you have 10.1 could you use RepeatedTiming for a more accurate result?
Apr
10
comment How can I evaluate this function in Mathematica?
Welcome to the world of Mathematica! Though I applaud your choice of CAS, I'd suggest you read some introductory texts on the language. Your post is like buying a car and then asking on the Internet how to drive.
Apr
10
reviewed Leave Open Delete permutations of subtables in a table
Apr
10
comment Delete permutations of subtables in a table
DeleteDuplicates[Sort/@A] looks like it would be faster, if you don't mind the sub lists being sorted afterwards.
Apr
9
reviewed Close Some problems about ListPlot3D, plot 6 faces of a 3D region
Apr
9
comment Error when combining Except, “*” and an additional character
@mr.wizard that answer implies that the pattern (Except [p]) can only stand for a single character, not that the pattern element itself (p) must be a single character. The first example seems to support this.