For help with mathematical questions arising from software such as Maple, MATLAB, Mathcad, Pari/GP, R, and so on. Consider posting questions about Mathematica and WolframAlpha onto Mathematica StackExchange instead. For GAP, SAGE, and MAGMA, use computer-algebra-systems.

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6
votes
2answers
145 views

Software or tool for investigating groups

I'm interested in software that has the ability to investigate finite groups. In particular, I'd like to be able to ask it questions like "What are the solutions to $x^3 = 1$?" (i.e. find cube roots ...
2
votes
0answers
48 views

What kind of structures can I count using Alg?

I'm interested in counting structures that satisfy certain constraints up to isomorphism. For example, I might want to know how many clutters there are on $n$ vertices. The only way I can think to ...
1
vote
1answer
69 views

Programming PARI/GP to do a sum

I'm trying to compute the following sum in PARI/GP $C=\sum_{n=1}^{\infty} \frac{g(n)}{n^2}$ where $g(n)$ defined as $$g(n)=(-1)^r, \qquad r=\text{number of even indexed prime factors of $n$}$$ By ...
3
votes
0answers
69 views

Program for writing a Bachelor Thesis. [closed]

Hello Im prolly going to start writing my bachelor thesis really soon (on geometric ergodicidy). It will obviously contain lots of mathematical formulas and symbols. Does anyone know a really good ...
1
vote
1answer
93 views

Implementing a function in PARI/GP

I want to define a function: $$g(n)= \begin{cases} +1 & \text{if $n=1$},\\ +1 & \text{if $n$ is an odd indexed prime}, \\ -1 & \text{if $n$ is an even indexed prime},\\ (-1)^r & ...
0
votes
1answer
53 views

How to represent R function dexp mathematically?

I need help representing this line of code mathematically. exp(sum(dexp(x,prop_theta,log=TRUE)) - sum(dexp(x,cur_theta,log=TRUE))) Thanks for your help in ...
0
votes
0answers
54 views

Can a Computer Algebra System 'experiment' with expressions?

I have recently been reading about software for symbolic manipulation, and I can see its use as a tool for performing large calculations that would be unfeasible otherwise. Given that these systems ...
0
votes
0answers
32 views

Tool for differentiating a matrix and solving a matrix equation (in closed-form)?

Is there any software or online tool that can analytically solve a complex matrix equation, such as the following one in closed form (not numerically)? $$\frac{\partial \; ...
1
vote
0answers
71 views

Any complex analysis book with programming assignment and exercises?

All: I had studied complex analysis long time ago. Now, I would like to review some material, particularly about Analytic function, Riemann zeta and Analytic function. I have been a software ...
5
votes
0answers
135 views

Any abstract algebra book with programming (homework) assignment?

All: I had studied abstract algebra long time ago. Now, I would like to review some material, particularly about Galois theory (and its application). Can anyone recommend an abstract algebra book ...
3
votes
2answers
113 views
1
vote
2answers
85 views

Free solvers in C/C++ for convex integer programming

I need to solve the following integer program: $\text{minimize } \sum_{i=1}^n(a_{i0} x_i + \sum_{k=1}^3 a_{ik}w_i^k + \sum_{j=1}^m d_{ij}y_{ij})$ $\text{subject to}$ $$ \sum_{i=1}^n y_{ij}=1, \quad ...
0
votes
0answers
37 views

Subject to in equation

I have the formula below: $$\hat x_2=\arg\min\lVert x\rVert_2\quad\text{subject to}\quad A{x}=y.$$ But I didn't understand what was meant by "subject to" ? does $x$ is replaced by $x_2$? please can ...
1
vote
1answer
87 views

Software to easily draw 3d plots from functions

my problem is that I need a way to quickly check results of my, that is to say, homework. I think that the best way to do this is to draw a plot of a function to quickly see whether my solution is ...
2
votes
1answer
85 views

Possibilities of calculate the determinant of an $168\times168$ matrix

Sincerely I've zero knowledge of this kind of math, but I've recently come to work in a friend's project to calculate a matrix of this size. This friend of mine has tried to do this with excel, with ...
1
vote
1answer
115 views

total number of combinations?

Patient Age ---> Avg Visits / Year <1 year ---> 7.5 1-4 years ---> 3.0 5-14 years ---> 1.8 15-24 years ---> 1.7 25-44 years ...
0
votes
0answers
38 views

How to reduce a graph via decomposition?

Is there a Java / C# library that can be used to reduce a graph via decomposition? Or could someone point me to a good tutorial where I can learn all these? E.g.
1
vote
1answer
69 views

What's the best software for primality tests of huge numbers? (check if an integer is prime or not)

I just read an article about huge prime numbers (some with more than 10millions digits!) that are discovered using software that check if an integer is prime or not (primality test sofwares). What is ...
-1
votes
3answers
33 views

point on a line and distance from a point [closed]

I have point(x1,y1) and point(x2,y2) these are end point of line and point(m,n) is a point. How can i find Point(a,b) which lies on the line ,that is the shortest path from point(m,n) to the line
0
votes
1answer
40 views

Solve a system of equations.

I have a system of equations: \begin{align} & x_{21} (\frac{\partial}{\partial x_{11}}f_{1111})( x_{11} , x_{21}, y_{11} , y_{21} ) + \frac{y_{21}}{x_{11}^2} (\frac{\partial}{\partial ...
0
votes
1answer
43 views

Aleks buttons that aren't needed? [closed]

I'm solving a problem on it, and to the side it gives me the button for fraction formatting. The buttons it gives are different for each problem. Does the fact the it's there mean that the answer has ...
4
votes
2answers
193 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 ...
1
vote
3answers
65 views

Creating fractals through computers

What are some beginner softwares for creating fractals on computers?
1
vote
0answers
20 views

Draw and compare the likelihood using R

The following shows the heart rate (in beats/minute) of a person, measured throughout the day: 73, 75, 84, 76, 93, 79, 85, 80, 76, 78, 80. Assume the data are an iid sample from ...
4
votes
1answer
107 views

Computer Algebra Systems for Experimental Mathematics (especially Integer Relations with PSLQ)

I would like to use a computer algebra system to do some experimental mathematics, particularly Integer Relation problems using the PSLQ algorithm. I know that Maple has a PSLQ implementation, but ...
86
votes
5answers
10k views

How were 'old-school' mathematics graphics created?

I really enjoy the style of technical diagrams in many mathematics books published in the mid-to-late 20th century. For example, and as a starting point, here is a picture that I just saw today: ...
1
vote
0answers
44 views

Writing math for pc and ipad

I have searched many times on softwares and apps for pc and ipad that are suitable for writing math up to advanced level, and support all mathematical scripts, symbols, formulas and operators. Can you ...
0
votes
2answers
66 views

Looking for a function calculator

I am looking for a calculator which can calculate functions like $f(x) = x+2$ at $x=a$ etc; but I am unable to do so. Can you recommend any online calculator?
5
votes
0answers
80 views

Tool that draws Venn diagram from subset relation

Is there a tool (LaTeX, JavaScript, Mathematica..) that allows one to draw Venn diagram automatically from subsets relations, e.g. $$A\subset A+B$$ $$A\subset C$$ $$C\subset C+D$$ $$B \not\subset ...
1
vote
1answer
32 views

Is there some function in Maple which can compute the number of monomials in a polynomial?

Is there some function $f$ in Maple which can compute the number of monomials in a polynomial? For example, $f(x_{1,2})=1, f(x_{1,2}+3x_{3,2}x_{2,5})=2$. Thank you very much.
1
vote
2answers
40 views

How to find number of variables in a monomial in Maple?

Given a monomial $m$. How to find number of variables in $m$ in Maple? For example, let $m=2*x*x$. Then the output to be $2$ (two same variable $x$ in $m$). Let $m=-2*x*y*y$. The output is $3$ ...
1
vote
2answers
71 views

Does anyone know of any open source software for drawing/calculating the area of intersection of different shapes?

I would like to be able to draw any number of different shapes and determine the area of their intersections. I'm looking for free, open source software. I thought about trying to code something up ...
0
votes
1answer
29 views

Take the index of a variable in Maple.

Are there some functions in Maple which can take the index of a variable. For example, we define are there some functions f in Maple such that f(x[2,3]) = [2,3]? Thank you very much.
3
votes
3answers
161 views

Do all mathematical symbols in LaTeX have a meaning?

I debated whether I should post this on the TeX forum or here. Mathematics seemed more appropriate. LaTeX has a ridiculous amount of symbols, including countless variations of the integral sign and ...
0
votes
2answers
207 views

software to solve system of nonlinear equations

I am looking for a software to solve system of nonlinear equations. It would be great if the software can satisfy the following requirements It can support symbolic computation. It deals well with ...
1
vote
1answer
91 views

Interactive Equation editor with Latex syntax

I was using the built in equation editor used by Pearson's "MyLab and Mastering" physics course, and I really like how it's both interactive and uses Latex syntax to insert equation elements. ...
3
votes
1answer
53 views

How to evaluate the quotient of Dedekind eta function in Pari/Gp

This expression I found in some research paper, which connects quotient of Dedekind eta function and ray class field of conductor N, which in turn gives the value of j-invariants. For $K=\mathbb ...
1
vote
0answers
11 views

Evaluating the quotient of Dedekind Eta function [duplicate]

This expression I found in some research paper, which connects quotient of Dedekind eta function and ray class field of conductor N, which in turn gives the value of j-invariants. For $K=\mathbb ...
0
votes
0answers
34 views

calculation of an integral via PARI/GP

I just started to use PARI/GP and I have a question that's been so strange to me. Here are the codes: intnum(x=1,2,frac(x)) = 0.50000... intnum(x=2,3,frac(x)) = 0.50000... intnum(x=1,3,frac(x)) = ...
16
votes
6answers
3k views

Best Math books or apps for adults to learn math from the beginning

I lost a possible job because I didn't know how to multiply and subtract negative valued integers. I also don't know how fraction manipulation works. What reference books can I read that can help for ...
2
votes
1answer
36 views

Evaluating $j$-invariant in PARI/GP.

Is there any command to evaluate $j$-invariant in PARI/GP? In Pari/Gp reference card there is $\operatorname{ellj}(x)$ function; but I am not understanding how to evaluate $j(i)$ or ...
5
votes
0answers
146 views

Note-taking software which is capable of representing mathematical relation

After quite a few studying experiences (both alone and following a class, studying topology, algebra, analysis, measure theory, differential geometry) I have acquired a lot of notes that I have either ...
1
vote
1answer
51 views

Calculating massive definite integral

I'm struggling with some integrals which one of them looks like THIS: $\displaystyle{\int_0^{3.8}\frac{\pi^4 x y (a+9 c+8 b \cos(\frac{\pi z}{l})+18 c \cos(\frac{2 \pi z}{l})) \sin^2(\frac{\pi ...
1
vote
1answer
146 views

inverse Laplace transfor by using maple or matlab

I want to use inverse Laplace transform to F function by using maple or matlab. However I cannot get any answer. I know the answer from table but I want to use one of softwares. from table: ...
3
votes
1answer
101 views

On Hilbert Class Polynomial

Is there any open source software which computes Hilbert Class polynomial of an imaginary quadratic fields? Thank you in advance
3
votes
0answers
47 views

Efficient software for producing (expression) trees “on the fly,” with good editing (e.g. cut/copy/paste) facilities?

A formula like $\forall x \exists y(x+y=0)$ can be represented as a tree. Something like so: ...
0
votes
0answers
22 views

Detect distance balance in graph

does exsist any software to detect distance balance in graph? I see gephi I wan't to know can this application do this work? thank you!
0
votes
0answers
44 views

Computer-aided study of elementary geometry

As a beginning student of elementary (euclidean plane) geometry, so far, I have gotten the impression that there are two major approaches to geometries: naive vs axiomatic. Being a humanities student ...
0
votes
1answer
36 views

BIBO stable system

I would like to ask if this system is Bounded Input Bounded Output stable : $$y[n] = r^nx[n],\quad r\in \mathbb{R}$$ And why? I think this system is stable because $$| x[n] | ≤ B,\quad B < ...
0
votes
1answer
273 views

Graphing a triple integral, software and the actual integral

What software can be used to graph a triple integral? I tried to use wolfram alpha, but it wouldn't work. I am trying to graph:$ \int_0^1 \int_\sqrt{z}^1 \int_0^{2-y-z} f(x,y,z) \; \mathrm{dx\; dy\; ...