0
0
Landau logarithm code-golf math number-theory integer-partitions
Related: Landau's function (OEIS A000793)
Background
Landau's function \$g(n)\$ is defined as the largest order of permutation of \$n\$ elements, which is equal to \$\max(\operatorname{lcm}(a_1,a_2,\cdots,a_i))\$ where \$a_1,a_2,\cd...
1
Related: Ellipse circumference
Introduction
An ellipsoid (Wikipedia / MathWorld) is a 3D object analogous to an ellipse on 2D. Its shape is defined by three principal semi-axes \$a,b,c\$:
$$ \frac{x^2}{a^2} + \frac{y^2}{b^2} + \frac{z^2}{c^2} = 1 $$
Just like an ellipse, the volume of an ellipsoi...
-1
I have the following code. Help me make it code shorter.
new Promise(r=>r(URL.createObjectURL(new Blob(['<h1>Example</h1>'],{type:'text/html'})))).then(u=>open(u)&&setTimeout(t=>URL.revokeObjectURL(u),2e3))
The Catch:
This has to be in JavaScript
It cannot contain semicolons
It must be a "one-l...
1
Given a binary sequence of finite length, find the starting position where this sequence first appears in the binary digits of π (after the decimal).
The binary digits of π start with
11.001001000011111101101010100010001000010110100011...
and digits will be counted such that the first one after ...
0
Interval notation is a way to write complicated range bounds more conveniently and concisely than writing an inequality. The challenge, should you choose to accept it, is to write a program or function that interprets a subset of interval notation. In this subset, intervals are a comma-separated ...
0
Your Challenge
Find out if a function returns its input.
Input Format
Input is a math expression as a string with operators + - * /.
Whitespace can be ignored.
For more info, check the examples.
Example Input/Output
Input: n /3 + 2*n/3 + 175 - 175x(n+ 1-n)
Output: true
Explain: Simplifies to "n"...
0
1
Inspired by a recent challenge involving Fibonacci numbers in which OEIS was mentioned, I would like to present a challenge of creating a function that generates a wide array of different linear integer sequences, depending on user input.
Specifically, the user should provide three inputs:
the k...
