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xiaohuamao
  • Member for 10 years, 2 months
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45 votes
4 answers
2k views

Eigenvalues broken in Version 12.0

41 votes
1 answer
2k views

Complex eigenvalues from a sparse Hermitian matrix

29 votes
2 answers
1k views

Wrong eigenvalues from a sparse matrix

16 votes
26 answers
2k views

Benchmarking Mathematica 13 across machines

13 votes
2 answers
877 views

Integrate gives wrong result for simple function

13 votes
1 answer
1k views

Why is this 2D plot so slow?

13 votes
3 answers
986 views

An ODE system easily polluted with spurious eigenvalues

13 votes
3 answers
631 views

How to evaluate $ \int_0^1{\mathrm e^{\mathrm i\pi x}x^x(1-x)^{1-x}\mathrm dx} $ and get $ \frac{\mathrm i\pi \mathrm e}{2\cdot3\cdot4} $?

11 votes
1 answer
657 views

Deep learning outperforms in symbolic integration and ODE?

10 votes
1 answer
239 views

VectorColorFunction not working at a few points

9 votes
2 answers
334 views

BarLegend ticks distorted in MatrixPlot

9 votes
3 answers
555 views

New things and limitations in Version 12 numerical differential equation solver?

9 votes
1 answer
485 views

How to solve this 2nd-order ODE with singularity?

8 votes
1 answer
282 views

How to solve this 1st-order linear ODE system with a few discrete eigenvalues?

8 votes
3 answers
623 views

Zero result from a positive integral

8 votes
2 answers
340 views

ListVectorDensityPlot plots outside the data in a very wrong way

8 votes
1 answer
205 views

Weird black line appears in vector density plot

7 votes
2 answers
395 views

ListPlot3D weirdly distorts and loses plotting data

7 votes
1 answer
214 views

Does Dropbox sync smartly notebook files? [duplicate]

7 votes
2 answers
3k views

How to draw a particular contour line in ListDensityPlot?

6 votes
3 answers
375 views

How to detect outlier in data of an unknown function $f(x)$

6 votes
2 answers
422 views

How to solve this trigonometric complex ODE system?

6 votes
2 answers
126 views

Set notebook sections one level up

6 votes
0 answers
306 views

Plotting severely distorted in V12.1 but works in V12

5 votes
2 answers
366 views

`Series` gives wrong result

5 votes
0 answers
80 views

Wrong results from FullSimplify[Exp[-2 (x - 3.1)^2]] [duplicate]

5 votes
4 answers
276 views

Put Inset beyond plot range

5 votes
1 answer
193 views

How to control DifferenceOrder in NDEigenvalue for an ODE?

5 votes
1 answer
750 views

Mathematica 10.X benchmark report for high-end surface pro 4/surface book?

5 votes
2 answers
185 views

Line thickness out of control in exported pdf