Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [bugs]

This tag is reserved for questions where the problem has been vetted by this community and the observed behavior is confirmed to be a bug. Please do not use this tag for new questions. Please use the standard bugs header instead of version tags in conjunction with this tag.

2
votes
1answer
74 views

Solve returns solution that isn't (always) one

I was asking Mathematica to find the roots of $f(x) = a+\sqrt{x^2-b}$ and it returns $x = \pm \sqrt{a^2+b}$. These are however solutions only if $a\leq 0$ (there are no roots if a is positive since ...
11
votes
3answers
233 views

Simplifying Cosh[a] + Sin[a] + Sinh[a]

Why does FullSimplify[Cosh[a] + Sinh[a] + Sin[a]] not return Exp[a]+Sin[a] ? Is this some bug in Mathematica or am I being ...
11
votes
1answer
293 views

Symbolic integration of potential over a disc : branch cut problem?

Context I am trying to explore the geometry of a crystal made of irregular bubbles. See animation here. very vaguely in the spirit of this post (it is in fact motivated by cosmology and galaxy ...
29
votes
1answer
1k views

Wrong eigenvalues from a sparse matrix: eigenvalues are nonreal

Bug introduced in 9.0 or earlier and persisting through 11.3. I notice in the following example that wrong complex eigenvalues are resulted if calculating from a Hermitian sparse matrix, which should ...
6
votes
3answers
89 views

Sometimes Region can't build right region

During my work with NDSolveFEM I found strange behavior of function Region. ...
4
votes
0answers
80 views

Integrate under assumptions

I am trying to solve the following integral: $$\int_0^\infty u^{\sigma-1} \exp\left[-c u^\sigma\right] \mathrm{d}u$$ under the assumptions $\sigma \in (0,1)$ and $c>0$. I know the result is $$\...
9
votes
1answer
71 views

Parallelize[MapIndexed[…,Association[…]]] returns broken result

Bug introduced in 10.0.2 or earlier and persisting through 11.3 Confirmed: CASE:4041910 Consider the following example: ...
4
votes
1answer
41 views

Automatic PlotRange based on Interpolation results

We generally use PlotRange->All to see all available points in a plot. But how do you use PlotRange when you want to run it ...
9
votes
1answer
118 views

Wha't the meaning of NaN in the descriptor of ImageKeypoints

Bug introduced in 10.3 or earlier and persisting through 11.3 ...
10
votes
1answer
88 views

SystemOpen from ScheduledTask

I could bet it used to work, now the following code fails 95% of times: RunScheduledTask[Echo @ SystemOpen @ "https://www.wolfram.com", {1}] Can you reproduce ...
8
votes
1answer
107 views

11.3 - import of files with paths containing non-ASCII characters [duplicate]

Import: Version 11.2 works correctly, no problem with non-ASCII characters in the path of file. But upgrated version 11.3 a) does not import these files b) ...
6
votes
2answers
74 views

GraphDistance error when Graph vertices are Associations

Bug introduced in 10.0 or earlier and persisting through 11.3 Here is a nice graph whose vertices are Associations: ...
10
votes
5answers
380 views

PDF Export in 11.3

I have some Mathematica notebooks that have text, code, plots, and hyperlinks in some text cells. The notebooks use a custom stylesheet that I've used for a number of years. Up until version 11.3 ...
3
votes
2answers
108 views
15
votes
2answers
280 views

PDF export on macOS Mojave produces bold fonts

I have updated my OS to macOS 10.14 Mojave. I found whenever I export a plot into a PDF file, the font of the label and ticks are automatically replaced into a bold font. I use Mathematica 11.3. Any ...
7
votes
1answer
79 views

Kernel shut down when use FindFaces with LBP Cascades

I found Mathematica can use OpenCV to improve face recognition in FindFaces: how to improve the results of the face recognition feature. But I tried this way and the kernel crashed. ...
14
votes
4answers
268 views

Terrible accuracy of DawsonF

DawsonF[30.] returns 0. The correct value is 0.016676... At least it prints a warning message, ...
4
votes
0answers
90 views

DSolve, NDSolve with WhenEvent Give Incorrect Solution for Simple ODE

NDSolve Results On the course of addressing question 181974, I encountered the following problem. ...
4
votes
0answers
82 views

Is there any place where all current Mathematica bugs are listed? [duplicate]

It will be nice to be aware of bugs that the current version of Mathematica has. Is there any place where all current Mathematica bugs are listed?
4
votes
0answers
112 views

Non-determinstic kernel crash when manipulating large expressions in Mathematica 11.3

I have a encountered a very weird behavior of Mathematica 11.3 when collecting and factoring large expressions. To be more precise, such operations often lead to an abrupt kernel crash, but the ...
3
votes
0answers
54 views

WSGetUTF8Function missing in WSTP DLL

Bug introduced in 10.0 and persisting through 11.3.0 Note: MLGetUTF8Function is new in 10.0 (ML interface 4). Despite being in docs and ...
2
votes
1answer
75 views

Benchmarking problem in V11.3 on Win7/10 X64 [closed]

I am the guy that likes to use BenchmarkReport[],see here for example. I noticed this loooong time ago after 11.3 was released, but never reported it. I wonder if ...
6
votes
0answers
137 views

DSolve Returns Incorrect Solutions for First-Order ODE

Bug introduced in 10.4 or earlier and persisting through 11.3. Reported to Wolfram Technical Support as CASE:4150361. Fifty-one DSolve questions on this site are ...
12
votes
1answer
156 views

Exporting graph object for later use

We are planning to analyze geometry of artery branch pattern. We convert the binarized image into graph object using MorphologicalGraph[]. To avoid the complexity ...
7
votes
1answer
312 views

What does the syntax C[1][x][y] mean?

I am examining an integrability condition, $$u_{3,122}=u_{3,123}.$$ Typing DSolve[D[u3[x1,x2,x3],x1,x2,x2]==D[u3[x1,x2,x3],x1,x2,x3],u3,{x1,x2,x3}] it into MMA ...
8
votes
2answers
264 views

Confused about the solution obtained from vector linearization

I am trying to linearize a vector expression $$\frac{(\mathbf{u}+d\mathbf{u})\times(\mathbf{v}+d\mathbf{v})}{\vert(\mathbf{u}+d\mathbf{u})\times(\mathbf{v}+d\mathbf{v})\vert}$$ Here is my code ...
10
votes
3answers
199 views

RegionMember[ ] in polygon

I am seeing a difference in RegionMember[ ] testing a point inside a 3-vertex polygon and testing a point inside a more complex polygon: ...
4
votes
1answer
98 views

3D arrow head not at the end of the shaft

Why when I use: Graphics3D[{Red, Arrowheads[0.1],Arrow[Tube[{{1, 1, -1}, {2, 2, 0}, {3, 3, -1}, {4, 4, 0}}, 0.05]]}] which I copied from the wolfram website the ...
5
votes
2answers
113 views

Unable to evaluate Eigenvalues and Eigenvectors for a matrix

I have the following 3X3 matrix M and I wish to find its eigenvectors and eigenvalues ...
4
votes
1answer
117 views

How to use Glow in ParametricPlot3D

I get the output that I need from ...
2
votes
1answer
61 views

When PlotRangePadding is provided with Scaled[] and the lower limit is non-negative, xmin for the tick mark function is wrong

For things like Plot, tick marks can be provided as a function (see Ticks), which will be given the values of the minimum and maximum ends of the respective axis or ...
6
votes
1answer
91 views

Bug in ListPlot: Duplicate markers (one list containing ``Infinity``)

simple plot of two lists, of which one contains infinity (markers are slightly shifted): ...
3
votes
1answer
130 views

Log transformed histogram distribution

Bug introduced in 11.0.1 or earlier and persisting through 11.3.0 or later I try to get a Log transformed histogram data I get from a different program ...
2
votes
2answers
81 views

Incorrect result for the region of convergence of a simple integral

Bug persisting at least through version 11.3.0 The standard Gaussian integral Integrate[Exp[-a x^2], {x,-Infinity,Infinity}] returns ...
4
votes
0answers
71 views

Problems with Failure in Testing Notebooks

This always fails the test: Failure["General", <|"MessageTemplate" -> "`1`", "MessageParameters" -> {foo}|>] While this passes as expected: ...
7
votes
2answers
152 views

Issue with FrameTick marks in Mathematica 11.3

Bug introduced in 11.3 or earlier For a while I have been using the same code to make figures with tickmarks pointing out from the axes away from the center of the figure. Recently I noticed that in ...
4
votes
1answer
100 views

possible bug with Limit

Evaluate this limit analytically Limit[Sum[Sqrt[1 + i^2/n^2]/n, {i, n}], n -> Infinity] Mathematica 11.3 gives 0. But ...
12
votes
4answers
201 views

Set pixel aspect ratio?

Bug probably present through all versions of Mathematica [CASE:4081592] Does Mathematica have a feature to set the pixel aspect ratio of 2D images? For example, ...
5
votes
1answer
70 views

Weird Export of .M4A format

When Exporting .M4A format audio, the duration is always 1. It seems that the audio is fast-forward played... Is that a bug and how can I fix it? Sample code: ...
3
votes
0answers
100 views

Issues with the series expansion of Nielsen generalized polylogarithms in Mathematica 11.3

In Mathematica 9, 10.3 and 11.0 I can easily expand PolyLog[2, 2, x] around $x=1$ using ...
3
votes
1answer
183 views

Bug: Wrong limit in Mathematica 11.1.1 and current WolframAlpha

Bug introduced around 11.1.1 and fixed in 11.2 ...
9
votes
0answers
93 views

'Visibility' of Dynamics in TabView with respect to SynchronousUpdating

Bug introduced in V11 or earlier and persisting through 11.3 CASE:4076464 Here is a code example: ...
5
votes
1answer
67 views

Precision-related error in Audio

Bug introduced in 11.3 or earlier CASE:4075745 I have been experimenting with using Audio and associated functions for data acquisition using an external sound ...
12
votes
1answer
138 views

“Boundary” thickness in HighlightImage

Bug introduced in 11 or earlier and persisting through 11.3 CASE:4076121 I'm having a hard time to understand how I can use HighlightImage and only draw the ...
10
votes
0answers
126 views

PatternSequence, Optional and _Symbol

Bug introduced in 9.0 or earlier, partially fixed in 10.1 and persisting through 11.3 [CASE: 4075992] confirmed Note: See (72290) for the fixed part of the bug. Consider the following example: <...
18
votes
2answers
246 views

Why this weird return value from `N`?

Bug introduced in 11.3. Why does N just return the exact number below? I want a 2000 digit approximation... ...
14
votes
1answer
249 views

Nested Table + GetElement in C-compiled function crashes kernel

Bug introduced in 8.0. [CASE:4075198] Using a nested Table and then Compile`GetElement crashes my kernel when I run a function ...
8
votes
0answers
143 views

FindShortestTour causes kernel crash

I have contacted support, CASE:4075709 UPDATE I have received reply from wolfram support. They have confirmed that this is indeed a bug. There are lots of sets of data that can cause the Kernel to ...
3
votes
3answers
1k views

How to solve this trigonometric system? [closed]

Namely, $$\left\{\left(\tan ^2\left(x-\frac{\pi }{3}\right)+\tan ^2\left(y+\frac{\pi }{6}\right)\right) (\sin (x)+\cos (y)-1)=0,\\ (\sin (y)-\sin (2 y)+2) (\sin (x)-\cos (y))=0,\\x\geq 0,x<2 \pi ,...