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3
votes
0answers
19 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 ...
5
votes
1answer
71 views

Import of data from ODS

With SetDirectory["~/Downloads"]; ifile = "test.xls"; TimeConstrained[idata = Import[ifile, {"Data", 1}], 5]; I can achieve the desired result of importing the ...
10
votes
1answer
309 views

Why is this infinite series wrongly computed by Mathematica?

Could you let me know if Mathematica (newer versions) is able to correctly compute this one? Sum[(-1)^(n + 1) Cos[3^n x]^3/3^n, {n, 1, Infinity}]
17
votes
0answers
127 views

Hyperlinks not preserved when saving in PDF format in MMA V10

I usually create my course contracts in Mathematica and then save them in PDF format. The notebooks include hyperlinks and these have transferred to PDF without problem over the last several versions ...
3
votes
1answer
163 views

Exporting multiple arrays in a single HDF5 file in Mathematica 7

I am using Mathematica 7 and I need to export a table of data and the corresponding x and y arrays. I would like to format them ...
14
votes
2answers
274 views

SaveDefinitions->True changes the displayed image

Bug introduced in 9.0.1 or earlier and persisting through 10.1.0 or later I have a Manipulate[ ] that displays an image with a superimposed ...
7
votes
1answer
57 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 ...
14
votes
0answers
154 views

Default behaviour of Hash[expr] and hashing in different versions of Mathematica

In different versions of Mathematica, Wolfram silently changed the behaviour of Hash when the algorithm is not specified explicitly ...
5
votes
1answer
98 views

Why do certain fractional values in TriangleWave not evaluate?

While answering another question I discovered that TriangleWave does not automatically evaluate when given certain fractional values, specifically fractions with a ...
5
votes
0answers
66 views

FullSimplify Produces Result that Includes Hold

In the course of developing a solution to Question 79183, I solved the equation ...
6
votes
2answers
325 views

Convolve does not get the correct answer

Convolve[Sinc[x], Exp[-x^2], x, X] (* E^-X^2 π *) is obviously false, but why? Any suggestions ?
15
votes
0answers
211 views

Compile not correctly initializing a variable defined inside Module

Bug introduced in 8.0 and persisting through 10.1.0 or later In the following example, inside the minimumX's Module, ...
5
votes
0answers
116 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 ...
18
votes
4answers
754 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
111 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 ...
19
votes
2answers
1k views

Why does Mathematica give the wrong answer when integrating?

I integrate Integrate[Exp[I Cos[b - c]] Cos[b], {b, 0, 2 Pi}] Mathematica gives: 2 I Pi BesselJ[1, 1] Which is indepedent ...
5
votes
0answers
119 views

Why don't products of Dirac deltas integrate correctly?

The integral $\int \int \ \delta(x) \delta(y) \ dx dy=1$ evaluates to 0 in Mathematica ...
21
votes
1answer
787 views

Bug in Solve (Mathematica 9)

The issue seems to be fixed as of Version 10.1. Just came across the strangest bug under both Mathematica 9.0.0 and 9.0.1. If one enters: ...
12
votes
1answer
375 views

Greek variables in 10.0.1

Bug introduced in 10.0.1 and fixed in 10.0.2 10.0.1 under Ubuntu 12.04 x64 .... Does everybody get greek variables emboldened? Is anybody aware of how to revert to previous normal display? The ...
5
votes
0answers
61 views

LogisticSigmoid residue bug?

On version 10.0 for arm: Residue[LogisticSigmoid[z],{z,I Pi}] gives 0 not 1. Can anyone reproduce this?
14
votes
1answer
188 views

Major slowdown when using a ColorFunction with more than one named scheme

Problem remains in 10.1 Earlier Kuba noted a major slowdown with code Simon Woods posted. Here is a simplified example. First a color function using two different named gradient schemes: ...
13
votes
3answers
225 views
7
votes
0answers
86 views

MoonPosition and TimeZone support

With this question, I noticed some some weird results of MoonPosition. Consider the following code: ...
9
votes
0answers
159 views

More Ticks::ticks errors in AbsoluteOptions in v10

Bug introduced in 7.0 or earlier and persisting through 10.1 or later While the specific bug affecting Plot described in AbsoluteOptions prints error messages in ...
12
votes
1answer
274 views

Bug in handling backslashed Cyrillic symbols in v.10.0.0?

UPDATE: In version 10.1.0 the described bugs are fixed. Now both the inputs "\б" and "\\б" are interpreted as ...
12
votes
2answers
964 views

Failure to export graphics by right-click when Notebook magnification is changed

Bug introduced in 9.0.1 or earlier and persisting through 10.1.0 or later When I try to export graphics as PNG, JPG and other rasterized formats using the right-click and choosing ...
4
votes
2answers
82 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... ...
16
votes
1answer
226 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: ...
1
vote
0answers
170 views

Annoying window. How to remove it?

Bug introduced in 10.0 and persisting through 10.1.0 or later How do I remove this window from my Mathematica? Unchecking the Debugger menu item as described in How to close the (local) Debug ...
5
votes
1answer
127 views

Why does Nintegrate keep unevaluated?

It's no surprise that the "MonteCarlo" Method works well: ...
2
votes
2answers
100 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 ...
3
votes
1answer
82 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 ...
5
votes
1answer
53 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: ...
29
votes
1answer
752 views

What calendar is Mathematica using for dates in the distant past?

It appears that Mathematica treats all dates as proleptic Gregorian dates by default, a hypothesis that can be easily tested by using AbsoluteTime to compute the ...
5
votes
1answer
56 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? ...
5
votes
2answers
138 views

Using MovingMap to calculate percentage changes

MovingMap (new in version 10) applies a function to discrete data over a moving window. This is very convenient for calculating the percentage change of a series. ...
5
votes
2answers
106 views

SetOptions for CoordinatesToolOptions for DateListPlot?

Bug introduced in 10.0 and persisting through 10.1.0 or later DateListPlot does not respect my Options setting for ...
11
votes
5answers
434 views

TableAlignments -> Left not working

Bug introduced in 7.0 or earlier and persisting through 10.1.0 or later For a very simple dataset TableAlignments->Left does not work: ...
21
votes
0answers
177 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 ...
0
votes
0answers
39 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 ...
9
votes
1answer
254 views

Menu commands on Palettes and other windows without menu bars?

Bug introduced in 10.0.0 and persisting through 10.1.0 or later In the Version 10 interface, at least by default, there is no longer a common menu bar in a separate window, and menus appear to be ...
11
votes
0answers
113 views
5
votes
0answers
88 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. ...
9
votes
1answer
118 views

FullSimplify wrongly reduces expression to zero

I get the following output with a fresh Mathematica (ver 10.0.2.0 on Mac) session ...
11
votes
1answer
441 views

WSTP broken by upgrade to 10.0.1?

Bug introduced v10.0.1, fixed 10.0.2 Everything was working fine with WSTP (the successor to MathLink) in 10.0.0. But I upgraded to 10.0.1 today and now I can't compile either my programs (I've ...
7
votes
1answer
137 views

Compiled function crashes kernel when trying to list over different length arguments

I'm trying to speed up a tally/binning operation that I have to run many times. I have many lists of between 1 and 10 numbers from the range [1,5] and I want to ...
18
votes
1answer
524 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: ...
29
votes
2answers
1k views

Mathematica 10 Notebook Fonts Look Bad

Bug introduced in 10.0.0 and persisting through 10.1.0 or later I've upgraded my home installation of Mathematica from version 9 to 10 today on a Windows 8.1 machine, and I'm getting a weird font ...
19
votes
2answers
721 views

How accurate is GeoDistance?

Two years ago I tried an evaluation copy of Mathematica. I reported various inaccuracies in the GeoDistance routine to which I never received any fix. Could ...