2
votes
1answer
97 views

The J programming language: is it useful for mathematics?

I just stumbled upon the J programming language, which has the description: J is particularly strong in the mathematical, statistical, and logical analysis of data. It is a powerful tool in ...
0
votes
2answers
36 views

Inverse Percentage.

Sorry for asking this foolish question. Here is the data i have. I purchased the product as $5 and additional fee is 2%. So Here is the total dollor ...
5
votes
2answers
459 views

What free software can I use to solve a system of linear equations containing an unknown?

Question: What free software can I use to solve a system of linear equations $M\mathbf{x}=\mathbf{y}$ where the entries of $\mathbf{y}$ vary with an unknown quantity $n$? Presumably I could do ...
2
votes
1answer
234 views

Using sympy im Python to substitute values into a 10x10 matrix

'm using the symbolic package sympy to store a 10X10 antisymmetric matrix in terms of 10 variables. and then at every iteration step, i substitute numerical values into the entries of the matrix. ...
3
votes
2answers
335 views

Graphical-entry knot theory program for Mac?

Is there a good program that runs on Mac OSX, which has a graphical interface for inputting knot or link diagrams, and calculates standard invariants like the Conway and Jones polynomials? I have ...
9
votes
1answer
617 views

How else can we be nauty?

The graph canonical labelling package nauty is widely regarded as one of the best (if not the best) around. Unfortunately, it's quite a large package, and making a GPU version seems to be a highly ...