And then I’m going to run a test command here to make sure everything is up and running. As you can see this is the version of R I’m running and the connection succeeded. Note that the free version of Mathematica, the evaluation version, doesn’t come with support for R, so if ...
Remark: Note that we “cheat” by adding 1 before taking the logarithms. We obtain the tables of correlations plots using the newly introduced, experimental PairwiseListPlot. If we remove the rows with zeroes some of the correlations become more obvious. Here is the corresponding tab view of...
Not quite 32-bit characters, but given the way computers work, the approach now is to allow characters to be represented by 32-bit objects. It’s far from trivial to do that uniformly and efficiently. And for us it’s been a long process to upgrade everything in our system—from string...
And at the time there were a number of research systems for doing algebra and things by computer. And I started using them—and managed to do some pretty interesting physics with them. But it didn’t take long for me outgrow the systems that existed....
to make a bifurcation diagram. Notice how the combination of high-level functions makes the program short. For example,Unionremoves duplicates from a list of values, taking into account that rounding errors require that floating-point numbers should be compared using a tolerance to allow for ...
Some of this is due to a limitation within MATLAB itself. MATLAB’s ODE solver requires taking in a user-defined function, and since this function is defined in MATLAB its function calls are very inefficient and expensive. Thus MATLAB’s ODE solver suite can become more efficient by using me...
This monograph is almost entirely devoted to the flexion structure generated by a flexion unit $\boldsymbol {\mathfrak {E}}$ or the conjugate unit $\boldsy
-modules. the construction can be easily adapted to include the framing and the doubling of the quiver, and also the operation of taking the fiber of zero through the moment map. in other words it is possible to write the scheme \(\mu ^{-1}(0)\) as a representation scheme for the ...
Optimising the code a little Before I could investigate convergence any further, I had a problem to solve: Sometimes the Manipulate would completely freeze and a message eventually popped up saying “One or more dynamic objects are taking excessively long to finish evaluating……” What was causing...
In Version 12.0 we’re taking a major step forward, and we’re releasing the first version of a new, much more powerful compiler that we’ve been working on for several years. This compiler is both able to handle a much broader range of programs (including complex functiona...