User xiaohuamao

45 votes

4 answers

2k views

Eigenvalues broken in Version 12.0

asked May 18, 2019 at 0:31

41 votes

1 answer

2k views

Complex eigenvalues from a sparse Hermitian matrix

asked Nov 18, 2018 at 6:42

29 votes

2 answers

1k views

Wrong eigenvalues from a sparse matrix

asked Mar 30, 2018 at 13:40

15 votes

21 answers

2k views

Benchmarking Mathematica 13 across machines

asked Apr 23, 2022 at 8:51

13 votes

2 answers

872 views

Integrate gives wrong result for simple function

asked Nov 20, 2017 at 9:25

13 votes

1 answer

1k views

Why is this 2D plot so slow?

asked Feb 11, 2016 at 5:37

13 votes

3 answers

981 views

An ODE system easily polluted with spurious eigenvalues

asked Apr 13, 2018 at 14:24

13 votes

3 answers

626 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} $?

asked Aug 28, 2019 at 20:51

11 votes

1 answer

643 views

Deep learning outperforms in symbolic integration and ODE?

asked Dec 18, 2019 at 22:44

10 votes

1 answer

234 views

VectorColorFunction not working at a few points

asked Jul 8, 2022 at 3:05

9 votes

2 answers

331 views

BarLegend ticks distorted in MatrixPlot

asked Sep 4, 2020 at 6:25

9 votes

3 answers

552 views

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

asked Apr 20, 2019 at 3:33

9 votes

1 answer

468 views

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

asked Dec 19, 2018 at 6:34

8 votes

1 answer

266 views

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

asked Jul 12, 2019 at 9:18

8 votes

3 answers

594 views

Zero result from a positive integral

asked Mar 26, 2022 at 11:02

8 votes

2 answers

337 views

ListVectorDensityPlot plots outside the data in a very wrong way

asked Mar 16, 2021 at 1:45

8 votes

1 answer

200 views

Weird black line appears in vector density plot

asked Sep 3, 2022 at 6:28

7 votes

2 answers

387 views

ListPlot3D weirdly distorts and loses plotting data

asked Feb 9, 2020 at 21:12

7 votes

1 answer

211 views

Does Dropbox sync smartly notebook files? [duplicate]

asked Jun 5, 2018 at 9:20

7 votes

2 answers

3k views

How to draw a particular contour line in ListDensityPlot?

asked Mar 3, 2015 at 5:02

6 votes

3 answers

372 views

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

asked Nov 17, 2014 at 13:52

6 votes

2 answers

416 views

How to solve this trigonometric complex ODE system?

asked Dec 9, 2017 at 8:12

6 votes

2 answers

125 views

Set notebook sections one level up

asked Nov 23, 2018 at 1:50

6 votes

0 answers

306 views

Plotting severely distorted in V12.1 but works in V12

asked Mar 26, 2020 at 18:43

5 votes

2 answers

360 views

`Series` gives wrong result

asked Feb 6, 2020 at 19:09

5 votes

0 answers

80 views

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

asked Aug 19, 2020 at 0:09

5 votes

4 answers

268 views

Put Inset beyond plot range

asked Sep 8, 2020 at 17:10

5 votes

1 answer

192 views

How to control DifferenceOrder in NDEigenvalue for an ODE?

asked Apr 13, 2018 at 3:11

5 votes

1 answer

747 views

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

asked Mar 31, 2016 at 4:52

4 votes

0 answers

109 views

Arrow looks very strange in a simple 3D plot

asked Oct 13, 2016 at 14:30

Stack Exchange Network

77 Questions

Eigenvalues broken in Version 12.0

Complex eigenvalues from a sparse Hermitian matrix

Wrong eigenvalues from a sparse matrix

Benchmarking Mathematica 13 across machines

Integrate gives wrong result for simple function

Why is this 2D plot so slow?

An ODE system easily polluted with spurious eigenvalues

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} $?

Deep learning outperforms in symbolic integration and ODE?

VectorColorFunction not working at a few points

BarLegend ticks distorted in MatrixPlot

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

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

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

Zero result from a positive integral

ListVectorDensityPlot plots outside the data in a very wrong way

Weird black line appears in vector density plot

ListPlot3D weirdly distorts and loses plotting data

Does Dropbox sync smartly notebook files? [duplicate]

How to draw a particular contour line in ListDensityPlot?

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

How to solve this trigonometric complex ODE system?

Set notebook sections one level up

Plotting severely distorted in V12.1 but works in V12

`Series` gives wrong result

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

Put Inset beyond plot range

How to control DifferenceOrder in NDEigenvalue for an ODE?

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

Arrow looks very strange in a simple 3D plot