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.
2,003
questions
0
votes
0
answers
29
views
Contour plot unit Bug?
I have a strange issue where if I try to perform a ContourPlot, Mathematica (13.0.0.0) looks up all the units and quantities terms. This takes several minutes upon the first run, although once terms ...
- 1,031
1
vote
0
answers
29
views
NCAlgebra 6.0.2 fails to compute the gradient of the trace of a simple quadratic product
NCAlgebra version 6.0.2 fails to compute the gradient of the trace of a quadratic product. Works fine in version ...
- 111
3
votes
1
answer
60
views
Percent symbol with FontFamily setting looks weird in Dendrogram
Bug introduced in 12.3.1 or earlier, persisting through 13.3.1.
...
- 425
1
vote
0
answers
72
views
How to resolve the following problem with DialogInput/PopupMenu?
Consider the following DialogInput:
...
- 4,984
1
vote
0
answers
22
views
Python external evaluator missing first print
Can you confirm this bug when evaluating Python code in Mathmatica?
Type > select Python by clicking on the icon on the left then paste the following code and ...
- 7,094
7
votes
0
answers
78
views
Unexpected behavior of `Exponent`
According to Exponent:
Exponent[expr, form] gives the maximum power with which form appears ...
- 385
6
votes
1
answer
236
views
6
votes
0
answers
93
views
SetOptions[Plot, FIlling -> Axis] breaks SmoothHistogram of a CDF
Bug introduced in 12.1 or earlier and persists through 13.3 .
UPDATE: I reached out to Wolfram, and they confirmed that it's a bug.
I am using version 12.3. Here's a simple plot of some randomly ...
- 133
2
votes
0
answers
87
views
Does VertexChromaticNumber return the optimal value?
The following code is meant to make a graph where each node represents a bitstring of length d and two nodes are connected if and only if the Hamming distance between their bitstrings is exactly 2. It ...
- 1,109
3
votes
2
answers
276
views
A possible bug about ParametricPlot in version 13.3
example 1
ParametricPlot3D[{x, y, 0}, {x, y} ∈ MengerMesh[2, 2]] // AbsoluteTiming
example 2
...
- 410
1
vote
0
answers
70
views
Missing frame ticks after removing tick labels
In this solution by @Mr.Wizard, some of the ticks along the bottom edge of the frame are clearly missing. This happens every time I use Charting`ScaledFrameTicks. Is there a fix?
For reference, here ...
- 1,670
10
votes
0
answers
261
views
Mathematica 13.3 breaks old socket code
Edit 1: A support case with the identification [CASE:5059026] was created.
Edit 2: This has just been confirmed as a bug by Wolfram Research.
I have just heard back from Wolfram Research. They have ...
- 5,097
3
votes
2
answers
141
views
VectorDisplacementPlot is stuck in certain geometries
I want to plot some deformation fields on some geometries with two holes. I do it using VectorDisplacementPlot. In some of the cases the distance between the holes is very small (for example: ...
9
votes
3
answers
366
views
Why do error messages show up when mouse hovers over ListLinePlot in V 13.3?
New bug in V 13.3
Wolfram support: A support case was created with the ID [CASE:5057959]
Why in V 13.3 on windows 10, when moving the mouse on top of a plot, it says there is an error? In V 13.2.1 ...
- 135k
12
votes
1
answer
422
views
Strange behaviour of an association
This an almost MWE of a problem I encountered when working with associations.
asc1 = <| |>;
asc1[1] = Range[0, 9];
asc1[2] = Range[0, 9];
asc1
Out[150]= <|...
- 10.1k
7
votes
1
answer
173
views
VectorPlot "Part 1 of {} does not exist" error
Bug introduced in 7.0, persisting through 13.2.
I am looking to plot the Magnetic Vector potential, A, as a function of position along the edge of a density plot. The density plot is fine, and I ...
- 135
2
votes
1
answer
85
views
Spurious output from SliceDensityPlot3D with CenterCutBox
Bug introduced in 12.2 or earlier, persisting through 13.2.
I am modeling a simple system: the potential from a sphere of charge Q as a function of position. SliceDensityPlot3D with the "...
- 135
7
votes
2
answers
470
views
Why can't NSolve solve for the obvious zeros?
Bug introduced in 13.2 or earlier and persisting through 13.2.1 or later
...
- 525
1
vote
0
answers
111
views
Incorrect line thickness in the exported PDF
The code below plots and exports to a PDF file. As one can see, there is a clear difference between the plotted line thickness in the notebook (left) and in the PDF snapshot (right). This is a sister ...
- 4,688
8
votes
2
answers
185
views
Why is `k` in the output of `Sum[Log[k]^2/k^k, {k,1,Infinity}]`?
The following sum converges to a constant. It would be much better to return unevaluated than to return something incorrect.
...
- 2,656
3
votes
2
answers
104
views
Inset disappears once PlotLegends is moved
The following code shows three positions for placing the PlotLegends. Weirdly, only in the first case can we see the Inset '...
- 4,688
2
votes
0
answers
59
views
Unexpected `LinearRecurrence` behavior in 13.2
From the definitions, I expect LinearRecurrence[{1}, {k}, 10] to be a constant array.
...
- 7,851
1
vote
0
answers
44
views
How to join common dates on a TemporalData set with TimeSeriesThread (possible Bug)
Bug introduced in version 13.2 or earlier
WRI have forwarded the problem to their developers. Case Number 5029803
I am trying to join TemporalData with many paths ...
4
votes
1
answer
151
views
ConjugateTranspose[#] vs Conjugate[Transpose[#]] for lists [duplicate]
Bug introduced in 12.3 or earlier, fixed in 13.0.
I'm getting contradictory behavior for eigenvectors of a matrix when using Conjugate, Transpose and ConjugateTranspose. I'll demonstrate using an ...
- 431
4
votes
2
answers
446
views
Using DSolve for integro-differential equation $\frac{\partial}{\partial t} f =hf+ \int \mathrm {d} i\, h f$?
Edit Apr 28 Wolfram Support confirmed that DSolve behavior is unexpected and escalated to developers, Case 5025062. Meanwhile, I'm interested in a work-around or an ...
- 8,059
2
votes
1
answer
120
views
Where to find SolidMechanicsExtendedStrain and SolidMechanicsExtendedStress?
The introduction to solid mechanics from Wolfram:
https://reference.wolfram.com/language/PDEModels/tutorial/StructuralMechanics/SolidMechanics.html#775646651
mentions two functions:
PDEModels`...
- 45.4k
0
votes
0
answers
44
views
Exporting plots containing special characters using MMA 13.2 on Ubuntu
Is there any way to export plots as pdfs correctly on Ubuntu?
An example of the problem:
...
- 4,137
3
votes
1
answer
61
views
Work-around for copy bug on Linux
Using multiple versions of Mathematica and Linux I have encountered a bug that extra spaces are introduced when copying parts of strings containing for example underscores. For example, selecting <...
- 4,137
4
votes
4
answers
254
views
Incorrect results of Mean and Variance of TransformedDistribution
I am solving a problem from 17th Kolmogorov competition.
Let $(x,y)$ be a Gaussian random vector with mean $(0,0)$ and a covariance matrix $$\left(\begin{array}{cc} 1&r\\r&1\end{array} \right),...
- 23.2k
4
votes
1
answer
118
views
Solving matrix equations over a finite field
I'm afraid this question is trivial, but I have spent the last couple of hours trying to figure out what goes wrong without any luck.
Given the following:
...
- 143
2
votes
0
answers
71
views
One more incorrect result of FunctionMeromorphic and FunctionAnalytic
Two years ago I submitted a bug in FunctionMeromorphic (That bug still persists in 13.2.). Here is one more incorrect result in it and ...
- 23.2k
5
votes
2
answers
98
views
Bug of ChoiceDialog
I am using Mathematica 13.1 on Windows 11.
I have the following bug with ChoiceDialog:
...
- 4,984
3
votes
1
answer
153
views
Is this a bug in IntegrateChangeVariables?
Bug introduced in 13.1, persisting through 13.2.1.
...
- 8,059
3
votes
1
answer
178
views
Transparency affects anti-aliasing in version 13.2?
Retrogression in version 12.2 or 12.1
I am making an animation with transparency, antialiasing fails when the transparency reaches certain values, which brings a jitter. A minimalist example:
...
- 6,744
0
votes
0
answers
50
views
Piecewise Boundary Condition for axisymmetric heat equation [duplicate]
I'm trying to solve the 2D axisymmetric heat equation, where only one section of the tube is being heated up. I have written the following code below:
...
- 103
10
votes
5
answers
718
views
The region and polygon don't match. Is it a bug?
Bug introduced in 12.3, and persisting through 13.2.1 or later.
Is this a bug? The region and polygon don't match. How can I fix this?
I would prefer to continue using "Implicit", as it is ...
- 2,678
2
votes
2
answers
467
views
Bug in integrate in in 13.1.0?
Bug introduced in 13.1, and fixed in 13.2.
I'm trying the following locally (13.1.0 for Mac) and getting incorrect result
...
- 8,059
1
vote
1
answer
59
views
Code involves WhenEvent and DiscreteVariables no longer works [duplicate]
Bug introduced after 10.0, in or before 10.3, persisting through 13.2.1
The exact problem I am dealing with has already been asked and answered here.
Unfortunately the solution no longer seems to ...
- 11
4
votes
1
answer
148
views
DSolve solution for 1st order PDE involving complex number does not match initial condition
Bug introduced in 11.3 or earlier, persisting through 13.2.1.
[Mathematica 12.0.0.0, MacOS X x86 (64bit)]
Trying to solve
...
- 175
3
votes
2
answers
120
views
Why does introducing value of variable for NDSolve via function not work for this problem?
I am very confused and even restarted Kernel several times (Mathematica 13.1 Windows 10). However, I fail to understand why one evaluation of NDSolve works while a ...
- 8,860
2
votes
1
answer
110
views
Is this a bug in Reduce for x/Sin[x] == x? [duplicate]
The output of
Reduce[x/Sin[x] == x]
is
(C[1] \[Element] Integers && x == \[Pi]/2 + 2 \[Pi] C[1]) || x == 0
but x ...
- 319
4
votes
0
answers
83
views
TrainImageContentDetector example aborts on GPU
I'm running v13.2.1 on Ubuntu and trying to run the built-in examples. But I see a "GPU memory exhausted" error on the first one in the docs for ...
- 3,561
5
votes
2
answers
254
views
2
votes
0
answers
62
views
Bug in VectorDensityPlot assigning variables
Bug introduced in 12.0 or earlier and fixed in 13.2 or earlier
I notice that after a call to VectorDensityPlot the variables used are assigned to random real values. This doesn't seem to happen with ...
- 121
4
votes
0
answers
134
views
InverseSeries giving incorrect result
Somehow in Mathematica 13.2.0.0, InverSeries generates incorrect results.
Let's look at the following two series that differs from each other by a constant number &...
- 591
3
votes
1
answer
118
views
Running of mesh generator DistMesh under version Mathematica 13.2
I am trying to run the element mesh generator DistMeshfrom FEMAddOns package by using version Mathematica 13.2 under Ubuntu 20.04.
...
- 1,187
1
vote
1
answer
138
views
How to calculate the double integral with e and imaginary number? [closed]
How do I write the code for mathmatica to integrate the below function.
it contains e and imaginary i so it is very confusing to me
- 11
0
votes
0
answers
53
views
Cells stuck at running after running after finding symbolic eigenvalues of a 4x4 matrix
I used the code below to calculate the eigenvalues of a 4x4 matrix symbolically.
...
- 15
7
votes
0
answers
145
views
Buggy behavior of EllipticE[0,k] with arbitrary precision input
I am having an issue where if I provide the EllipticE function with a first argument of zero and a second argument with a precision lower than that of machine precision, the kernel crashes.
For ...
- 71
1
vote
1
answer
46
views
Combination of RowBox and SuperscriptBox create a new line "\n"?
Given the following code:
...
- 1,335