# Questions tagged [math]

The challenge involves mathematics. Also consider using more specific tags: [number] [number-theory] [arithmetic] [combinatorics] [graph-theory] [geometry] [abstract-algebra] [integer] [primes].

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Sandbox Finding radicals of arbitrary ideals in rings is hard! However, it's a doable task in polynomial rings, since they are Noetherian (all ideals are finitely generated) Background A quick ...
564 views

### Fraction Frenzy!

EDIT: I'm getting a lot of comments about this not terminating - I will give the "correct answer" tag to either the first person who gives me FF(3) (as in provides ...
468 views

### Write a FAST word equation solver

This question is similar to Write a word equation solver by David Frank but different in three important ways: (1) David asked for just the first solution found, and I am asking for all the solutions. ...
326 views

### What is the simplest reversible circuit that computes conjugacy of transpositions?

Reversible computation refers to computation in which little or no information is deleted. Reversible computation a major component of quantum computation, and reversible computation is potentially ...
252 views

### Yet another digit insertion problem

Given a positive number $n$ we call another (not same as n) positive number $m$ good if we insert same digits in both n and m and the resulting fractional value is same. m/n = m_{\text{...
342 views

### Find the pattern

I feel tired to do "find the pattern" exercise such as 1 2 3 4 (5) 1 2 4 8 (16) 1 2 3 5 8 (13) Please write a program that finds the pattern for me. Here, we ...
210 views

### Compute the Three Dimensional Discrete Cosine Transform

Challenge I've checked that there is a question Compute the Discrete Cosine Transform which is a competition for implementing a shortest solution to compute the one dimensional discrete cosine ...
Given the equation of a non-parabolic conic section, output its characteristics. Spec Some info on conic sections: for more info visit Wikipedia From an equation of the form $ax^2+bx+cy^2+dy+E=0$, ...