Jan Marthedal Rasmussen
@janmr.com
Programmer, amateur mathematician, BJJ brown belt
https://janmr.com
https://janmr.com
Bell numbers, the number of ways to partition a set of labeled elements janmr.com/posts/bell-n... #math #combinatorics #bell #numbers
December 30, 2025 at 3:36 PM
Bell numbers, the number of ways to partition a set of labeled elements janmr.com/posts/bell-n... #math #combinatorics #bell #numbers
The Utah Teapot (also known as the Newell Teapot) is one of the most famous 3D models in computer graphics history. It was originally created by Martin Newell in 1975 and went through a number of modifications over the years. graphics.cs.utah.edu/teapot/ #graphics #modelling
December 29, 2025 at 10:52 AM
The Utah Teapot (also known as the Newell Teapot) is one of the most famous 3D models in computer graphics history. It was originally created by Martin Newell in 1975 and went through a number of modifications over the years. graphics.cs.utah.edu/teapot/ #graphics #modelling
Calculus Made Easy is a book on calculus originally published in 1910 by Silvanus P. Thompson, considered a classic and elegant introduction to the subject calculusmadeeasy.org #math #calculus #online #book
December 28, 2025 at 9:35 AM
Calculus Made Easy is a book on calculus originally published in 1910 by Silvanus P. Thompson, considered a classic and elegant introduction to the subject calculusmadeeasy.org #math #calculus #online #book
The Crossed Ladders Problem janmr.com/posts/crosse... #math #geometry #algebra #problem #nerdsniping
December 27, 2025 at 1:32 PM
The Crossed Ladders Problem janmr.com/posts/crosse... #math #geometry #algebra #problem #nerdsniping
The Zen of Python. A listing of Python design principles and philosophies that are helpful in understanding and using the language. The listing can be found by typing `import this` at the interactive prompt. peps.python.org/pep-0020/ #python #programming
December 26, 2025 at 11:49 AM
The Zen of Python. A listing of Python design principles and philosophies that are helpful in understanding and using the language. The listing can be found by typing `import this` at the interactive prompt. peps.python.org/pep-0020/ #python #programming
Today marks the December solstice, the shortest day in the Northern Hemisphere and the longest day in the Southern Hemisphere. At 15:03 UTC the North Pole is tilted maximally (about 23.4°) away from the Sun. janmr.com/posts/equino... #astronomy #december #solstice
December 21, 2025 at 1:58 PM
Today marks the December solstice, the shortest day in the Northern Hemisphere and the longest day in the Southern Hemisphere. At 15:03 UTC the North Pole is tilted maximally (about 23.4°) away from the Sun. janmr.com/posts/equino... #astronomy #december #solstice
Evaluation of Powers janmr.com/posts/evalua... #programming #algorithm #cpp #exponentiation #optimality
December 20, 2025 at 12:37 PM
Evaluation of Powers janmr.com/posts/evalua... #programming #algorithm #cpp #exponentiation #optimality
The M/o/Vfuscator compiles programs into "mov" instructions, and only "mov" instructions. Arithmetic, comparisons, jumps, function calls, and everything else a program needs are all performed through mov operations 🤯 github.com/xoreaxeaxeax... #programming #compiler #assembler
December 19, 2025 at 7:18 AM
The M/o/Vfuscator compiles programs into "mov" instructions, and only "mov" instructions. Arithmetic, comparisons, jumps, function calls, and everything else a program needs are all performed through mov operations 🤯 github.com/xoreaxeaxeax... #programming #compiler #assembler
December 18, 2025 at 6:37 AM
Every position of Rubik's Cube can be solved in twenty moves or less www.cube20.org #math #combinatorics #rubikscube
December 17, 2025 at 10:31 AM
Every position of Rubik's Cube can be solved in twenty moves or less www.cube20.org #math #combinatorics #rubikscube
Computing the Integer Binary Logarithm janmr.com/posts/comput... #programming #algorithm #integer #binary #logarithm #numbers #cpp
December 16, 2025 at 12:53 PM
Computing the Integer Binary Logarithm janmr.com/posts/comput... #programming #algorithm #integer #binary #logarithm #numbers #cpp
December 14, 2025 at 2:45 PM
December 12, 2025 at 9:25 AM
December 9, 2025 at 6:53 AM
Two Notes on Notation by Donald E. Knuth (Iverson’s convention and Stirling numbers) arxiv.org/abs/math/920... #math #notation
December 8, 2025 at 8:14 AM
Two Notes on Notation by Donald E. Knuth (Iverson’s convention and Stirling numbers) arxiv.org/abs/math/920... #math #notation
December 7, 2025 at 11:45 AM
Langford pairs: Arrange the 2n numbers {1, 1, 2, 2, ..., n, n} such that exactly k numbers occur between the two appearances of each digit k dialectrix.com/langford.html #math #combinatorics
December 6, 2025 at 2:52 PM
Langford pairs: Arrange the 2n numbers {1, 1, 2, 2, ..., n, n} such that exactly k numbers occur between the two appearances of each digit k dialectrix.com/langford.html #math #combinatorics
Continued Fractions and Continuants janmr.com/posts/contin... #math #computerscience #algoritms #continuedfractions
December 5, 2025 at 6:39 AM
Continued Fractions and Continuants janmr.com/posts/contin... #math #computerscience #algoritms #continuedfractions
Computing the Greatest Common Divisor janmr.com/posts/comput... #math #programming #number-theory #algorithm
December 2, 2025 at 1:52 PM
Computing the Greatest Common Divisor janmr.com/posts/comput... #math #programming #number-theory #algorithm
Useful Properties of the Floor and Ceil Functions janmr.com/posts/useful... #floor #ceil #functions #math #programming
November 30, 2025 at 10:15 AM
Useful Properties of the Floor and Ceil Functions janmr.com/posts/useful... #floor #ceil #functions #math #programming
November 28, 2025 at 7:53 AM
Modern Computer Arithmetic, a book about algorithms for performing arithmetic, and their implementation on modern computers maths-people.anu.edu.au/~brent/pub/p... members.loria.fr/PZimmermann/... #multiple-precision #arithmetic #algorithms #online #book
November 27, 2025 at 6:53 AM
Modern Computer Arithmetic, a book about algorithms for performing arithmetic, and their implementation on modern computers maths-people.anu.edu.au/~brent/pub/p... members.loria.fr/PZimmermann/... #multiple-precision #arithmetic #algorithms #online #book
Nice Proof of a Geometric Progression Sum janmr.com/posts/nice-g... #math #visualization #visual-proof
November 26, 2025 at 5:59 AM
Nice Proof of a Geometric Progression Sum janmr.com/posts/nice-g... #math #visualization #visual-proof
A good example of where the phrase "An exception that proves the rule" would be applicable
November 28, 2024 at 1:56 PM
A good example of where the phrase "An exception that proves the rule" would be applicable