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Apr
12
awarded  Good Answer
Apr
10
awarded  Nice Answer
Apr
7
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Feb
27
awarded  Revival
Feb
11
awarded  Enlightened
Feb
11
awarded  Nice Answer
Feb
3
comment Why Refine does not simplify Cos[2*Pi*FractionalPart[1/2*(i + j + k)]] to $(-1)^{i+j+k}$?
@Artes I think that it is not a duplicate since Refine/FullSimplify works bad with FractionalPart.
Feb
3
revised Why Refine does not simplify Cos[2*Pi*FractionalPart[1/2*(i + j + k)]] to $(-1)^{i+j+k}$?
A small typo fixed
Feb
3
revised Why Refine does not simplify Cos[2*Pi*FractionalPart[1/2*(i + j + k)]] to $(-1)^{i+j+k}$?
Please, do not mix Mathematica code and LaTeX
Feb
3
answered Why Refine does not simplify Cos[2*Pi*FractionalPart[1/2*(i + j + k)]] to $(-1)^{i+j+k}$?
Feb
1
reviewed Approve suggested edit on Why is a bump function making NDSolve take forever to solve?
Feb
1
reviewed Close Exploiting a relation among constants
Feb
1
revised Convergence problems with numerical integration of specific functions
Improved formatting
Feb
1
answered Why TensorReduce not working here?
Feb
1
awarded  Nice Answer
Feb
1
awarded  Nice Question
Jan
31
revised The second argument of Signature
added 878 characters in body
Jan
29
comment How can I plot a function that is the sum of another function?
Can you post your code here, not a snapshot? P.S. maybe Sum instead of sum?
Jan
26
comment The second argument of Signature
@Mr.Wizard v9 also has magic numbers, e.g. a={52579, 13723}.
Jan
26
comment The second argument of Signature
@Mr.Wizard I confirm this in v6 and v8, but not in v9.