# All Questions

122 views

### Bug in PositiveDefiniteMatrixQ?

Fixed in 10.1.0. Exists in at least 9.0.1 -- 10.0.2. This seems like a bug in PositiveDefiniteMatrixQ to me: ...
172 views

### TableView displays negative numbers incorrectly

I'm trying to substitute TableForm with TableView because TableView is more handy with big data . But on my Mathematica 9.0.1 (ubuntu 14.04_64bit) there is a problem with negative numbers: ...
116 views

### What are the possible security breaches in CDF content?

It has been noted on this site before that the free CDF player is notoriously trigger-happy in declaring dynamic content to be "potentially unsafe", and forcing the user to enable dynamic content ...
264 views

### How can I find the source of a memory leak?

I found a really weird issue using NDSolve`ProcessEquations inside module. We start by setting HistoryLength to 0. After this we define a function which takes in an integer and creates a Table of ...
165 views

### Fourier transform over a custom dimension

I have a multidimensional array A. Fourier[A] finds the discrete Fourier transform over all dimensions. How to find discrete ...
194 views

### Improving the performance of a package for working with rational functions

As Mathematica gets slow for large symbolic calculations, the cost of putting terms over a common denominator (Together), in particular, gets too high. It occurred ...
117 views

### Detect when InputField gets keyboard focus

How might I detect when an InputField comes into focus? For example ideally something like this would work. ...
833 views

### Resources on Mathematica and strong AI (a.k.a. AGI)

David Deutsch (physicist / quantum computing theorist) wrote an article for Aeon Magazine last year: On Artificial Intelligence that got me thinking. The article assesses and critiques the ...
158 views

### How to add big data into a CDF file, without it being loaded into memory

I have 1 GB of data that I would like to add to a CDF file, but I would like to avoid it being loaded into memory when someone opens the file (Free Player). One gigabyte of info takes a lot of ...
479 views

### Creating and using an explicit piecewise function in a convenient way

I have a set of data points that define a function in the form curvePts = {data1,data2,...} where ...
619 views

### Inverse Laplace transform not obtained

I can't seem to be able to compute the inverse Laplace transform of a Laplace transform: ...
48 views

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### Implementation of Partial Least Squares (PLS)?

I'm looking for a PLS implementation for Wolfram Mathematica. I just cant seem to find any implementation for it - do you know one? In general, I'm a bit confused that there exist only so few ...
40 views

### What system functions use VertexWeights?

EdgeWeights -> are used by a lot of functions, but I can't find any exposed usage for VertexWeights ->. I'm not asking ...