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11
votes
1answer
116 views

What's wrong with Simplify and FullSimplify?

I have a quite complex list of equations and inequalities I combine to a boundary condition for my cost function. After investigation of two days I found the bug (I really name it a bug!). One of my ...
0
votes
0answers
24 views

Undo (CTRL Z as well as under edit) bug after pressing contol shift

As some of you might know, if you press control + shift on windows, you change your keyboard layout. For example, : becomes ±. This happens sometimes in Mathematica, and it results in a weird bug: ...
6
votes
1answer
89 views

Manipulate code crashes V10.1

This code is working with Mathematica 9, but Mathematica 10.1 is becomes unresponsive when I try to evaluate it. ...
10
votes
1answer
138 views

Using Simplify on a consistent system returns False

Bug introduced in 8.0 and persisting through 10.1.0 or later It's late, but am I missing something here? Why should two independent equations, which together are consistent, ...
13
votes
2answers
191 views

Exporting Dataset to WDX format fails

I reported this to WRI support. Tracking number is CASE:3368636 Official answer is: Thank you for contacting Wolfram Technical Support. This is a known issue and our developers are working on a ...
7
votes
0answers
59 views

Floating highlighting bug [duplicate]

At some random point in time the highlighting does not disappear any more. By highlighting I mean transparent boxes appearing for find feature indicating found object, cursor highlighting once you ...
1
vote
1answer
112 views
4
votes
1answer
53 views
4
votes
2answers
111 views

ToElementMesh problem on Ball defined by ImplicitRegion?

Could any one please confirm the following bug in mathematica 10.0.2 ? If I define this ball Ω = ImplicitRegion[0 <= x^2 + y^2 + z^2 <= 1, {x, y, z}]; and ...
2
votes
0answers
61 views

Transparent bitmaps in controllers. Problem with initial appearance

Bug reproduced in V10.1 on Win7 I have a problem with images with alpha channel which I want to use as labels on Button etc. Unless I scroll or move cursor over ...
3
votes
1answer
71 views

ConvexHullMesh sometimes excludes valid points from convex hull

I have a sequence of polytopes that I am trying to visualize, and I find that ConvexHullMesh sometimes excludes points from the convex hull, and it does so inconsistently. In particular, notice these ...
2
votes
2answers
162 views

Solving coupled first-order autonomous differential equations

I am trying to run a simulation of a circuit to observe chaotic behavior, and have obtained a set of differential equations from an analysis of the circuit. I thought perhaps I could produce a plot ...
5
votes
0answers
66 views

Kernel Crash while using “ValuesOnGrid” method of InterpolatingFunction

I was experiencing some kernel crash while using "ValuesOnGrid" method of an InterpolatingFunction returned by ...
6
votes
1answer
125 views

Comparing exact expressions for equality — is it really OK if I get wrong answer?

I found an unexpected behavior (that I think of as a bug) in evaluation of the equality operator applied to mathematical functions with exact arguments (i.e. not containing any approximate ...
3
votes
1answer
124 views

How to make sure polygon is drawn flat in 3D?

I'm working on this SE question about pentagrams on top of dodecahedron for exercising. Both solutions are basically connecting different sets of vertices of existing dodecahedron. They don't really ...
14
votes
2answers
332 views

Error “Throw::nocatch: Uncaught Throw[False] returned to top level” given each time I open a new Mathematica 10.1 session

From a few days now each time I open a new Mathematica session I get the small error messages window with the error ...
3
votes
0answers
73 views

Unknown (internal?) function with `DSolve`

I am solving With Mathematica 10 the following ODE system: DSolve[{B'[x] == -f[x]*Cos[l]*G[x], G'[x] == +f[x]*Sin[l]*B[x]}, {B,G}, x] The solution is almost ...
4
votes
2answers
115 views

Problem About TimelinePlot

I have some data from wikipedia. ...
3
votes
0answers
30 views

VertexDelete not working on graph with VertexWeight

Good afternoon, I have observed an "unexpected behaviour" with VertexDelete and a graph with vertex weights. This is a minimal working example: OK ...
4
votes
2answers
141 views

Transpose can't handle fractions

Related to this question, why can't Transpose handle fractions? (Note the doc pages for Transpose hasn't been updated for v10) ...
18
votes
4answers
812 views

A bug in Integrate

Integrate[(1 + 16 Tan[2 x - y]^2)/(1 + 4 Tan[2 x - y]^2), {x, 0, 2 π}] Mathematica (wrong) output is (tested under versions 8 and 10.0, took ~ 1 minute of CPU ...
5
votes
0answers
127 views

Wrong Limit in Mathematica 10.0.0

Limit[(Log[(3+Sqrt[5])/2]/(2*Log[(1+Sqrt[5])/2]))^(-1-2*n), n -> Infinity] Mathematica (wrong) output: 0 But this is ...
7
votes
1answer
146 views

Wrong Limit with LaguerreL

Limit[(n! LaguerreL[n,-1]/(n^(n+1/4)/Sqrt[2]/E^(n-2 Sqrt[n]+1/2))-1) Sqrt[n], n->∞] Mathematica (wrong) output ...
5
votes
0answers
72 views

LogisticSigmoid residue bug?

On version 10.0 for arm: Residue[LogisticSigmoid[z],{z,I Pi}] gives 0 not 1. Can anyone reproduce this?
7
votes
1answer
68 views

Question about TransitiveReductionGraph

In Mathematica 10.0 and 10.1, according to the documentation of TransitiveReductionGraph: The transitive reduction h of a graph g is a graph that has the same ...
2
votes
0answers
59 views
5
votes
1answer
62 views

Integrate gives Simplify::infd “simplified to Indeterminate” message

Using version 10.1 on windows 7 Integrate gives this Simplify::infd Kernel message. What causes it, is this a bug? ...
16
votes
1answer
253 views

In 10.1.0 BenchmarkPlot doesn't work?

In Mathematica 10.1.0 BenchmarkPlot from the GeneralUtilities package doesn't work; copying Taliesin Beynon's initial use of the function on this site: ...
2
votes
2answers
117 views

Bug: Export sometimes adds unwanted background to PDF files

Update: WRI confirmed that this is a known issue with Export on 2015-05-14. I am trying to export the outputs of some Plot expressions as PDF files for inclusion ...
5
votes
1answer
140 views

Why does Nintegrate keep unevaluated?

It's no surprise that the "MonteCarlo" Method works well: ...
3
votes
1answer
113 views

Initializing Manipulator value within DialogInput (version 10.1 only)

Bug introduced in 10.1.0 I've confirmed, with WRI, that an issue was introduced in version 10.1 with regard to initializing Manipulator Dynamic values when the ...
0
votes
0answers
51 views

problem of re-open the .nb file of Mathematica

This probably is a newbie question, but I cannot figure out it. I have a Mathematica 10. Every time when I re-open a .nb file, either by double clicking or by using the software interface, all cells ...
21
votes
0answers
199 views

Does Mathematica store hidden information for matrix objects?

Bug introduced in 10.0.0 and persisting through 10.1.0 or later I found a case where calling one built-in function (HermitianMatrixQ) for a given matrix changes ...
9
votes
1answer
127 views

FullSimplify wrongly reduces expression to zero

I get the following output with a fresh Mathematica (ver 10.0.2.0 on Mac) session ...
2
votes
0answers
81 views

Arrowhead becomes unattached to line in a Graphics3D Manipulate

I'm trying to Manipulate a Graphics3D figure, and am seeing some errors. If I execute the following code, and move the slider, ...
3
votes
0answers
47 views

Using indexed array elements as integration dummy variables with EvaluationMonitor. Bug?

As part of a routine that must cope with integration of varying numbers of dimensions, I would like to use indexed variable names (e.g., x[0], x[1],...) as dummy integration variables. However, it ...
0
votes
0answers
31 views

Possible bug of Exporting as HTMLFragment at Linux

This is the result of Mathematica 10.0.2 of Linux Version. There are two style inside one tag, and this fragment cannot be Imported as XML by Mathematica. This is the result of Mathematica 10.1 of ...
5
votes
0answers
97 views

Trouble understanding TrackedSymbols

While developing a relatively complex demonstration for Manipulate I encountered the problem that my output was unintentionally self-updating in an endless loop. ...
5
votes
2answers
183 views
13
votes
3answers
243 views

Can't inject EncryptedObject

Here are minimal examples: ...
0
votes
0answers
86 views

Benchmarking in V10.1.0 not showing the correct verision of Mathematica?

This was done in V10.1.0, but it's showing that as if it was done in V10.0.0? Computer Specs:(for those who are interested) ...
3
votes
2answers
141 views

Strange results from evaluating a simple integral

I am trying to do a seemingly simple integral in Mathematica 10 and am getting strange results: ...
19
votes
1answer
711 views

Mathematica 10.1.0.0 (OS X) high CPU usage even for empty notebook

Since update to 10.1.0.0 Mathematica has a high CPU usage even when no evaluation is running (even for empty notebook opened). I am running OS X Yosemite 10.10.3 on the following configuration: ...
4
votes
0answers
49 views

Mathematica doesn't italicise a function's argument in the function's body if it appears in the denominator and the denominator is edited. A bug?

Bug introduced in 10.0.0 and persisting through 10.1.0 or later I'm using Mathematica 10.0.2 for Mac. On a fresh kernel, I type this: a is not italicised ...
4
votes
0answers
91 views

Memory leak when looping over FindInstance in version 10.0.0

When I run the following (simplified) code with FindInstance, my MemoryInUse is constantly increasing: ...
2
votes
1answer
40 views

upper limit with `PlotStyle` in `GeoListPlot` in v10.1

Confirmed bug in v10.1 Let's start with the code below: ...
5
votes
2answers
175 views

Kernel quits without error in NDSolveValue

I am using the latest 10.1. The following single line command makes the kernel quit without error message (just a beep): ...
7
votes
0answers
92 views

MoonPosition and TimeZone support

With this question, I noticed some some weird results of MoonPosition. Consider the following code: ...
5
votes
1answer
57 views

DateObject for current date skips a day when crossing the date line with TimeZone

The DateObject was introduced in version 10 of Mathematica. One can call it to fetch the current local date and time: ...
5
votes
2answers
100 views

Dataset Query using Composition fails but RightComposition works - why?

V10.1 on Win764 Enterprise. In this (CORRECTED) example the two Queries may be compounded into one using RightComposition sucessfully... ...