janmr.com

Introduction to Neural Networks, part 2: The Model

2026-06-14T16:27:00Z

Introduction to Neural Networks, part 2: The Model http://janmr.com/posts/neural-networks/02-the-model/ #neuralnetworks #machinelearning

Attention Is All You Need was published in June 2017 — the paper introduced the Transformer architecture, which laid the foundation for modern large language models

2026-06-12T11:01:00Z

Attention Is All You Need was published in June 2017 — the paper introduced the Transformer architecture, which laid the foundation for modern large language models https://arxiv.org/abs/1706.03762 #paper #llm

Linear Algebra by Gilbert Strang — one of the most popular free linear algebra courses, with video lectures and materials

2026-06-11T13:16:00Z

Linear Algebra by Gilbert Strang — one of the most popular free linear algebra courses, with video lectures and materials https://ocw.mit.edu/courses/18-06-linear-algebra-spring-2010/

Foundations of Computer Science by Alfred Aho and Jeffrey Ullman — a freely available CS textbook covering automata, languages, and computation

2026-06-08T13:57:00Z

Foundations of Computer Science by Alfred Aho and Jeffrey Ullman — a freely available CS textbook covering automata, languages, and computation http://infolab.stanford.edu/~ullman/focs.html

Introducing a series of posts on the basics of Neural Networks

2026-06-07T12:58:00Z

Introducing a series of posts on the basics of Neural Networks https://janmr.com/posts/neural-networks/01-preface/

The Story of C++: The World's Most Consequential Programming Language | The Official Story

2026-06-05T11:22:00Z

The Story of C++: The World's Most Consequential Programming Language | The Official Story https://www.youtube.com/watch?v=lI7tMxzSJ7w

The paper A Universal Algorithm for Sequential Data Compression was published in May of 1977 — it introduced the LZ77 algorithm, which became the foundation for a family of derivative compression algorithms underpinning widely used formats like ZIP, gzip, and PNG

2026-05-31T10:57:00Z

The paper A Universal Algorithm for Sequential Data Compression was published in May of 1977 — it introduced the LZ77 algorithm, which became the foundation for a family of derivative compression algorithms underpinning widely used formats like ZIP, gzip, and PNG https://ieeexplore.ieee.org/document/1055714 https://courses.cs.duke.edu/spring03/cps296.5/papers/ziv_lempel_1977_universal_algorithm.pdf

Rust and Iterator Adapters

2026-05-30T13:52:00Z

Rust and Iterator Adapters http://janmr.com/posts/rust-and-iterator-adapters/

Calculus by Gilbert Strang — an online book that covers single variable and multivariable calculus in depth, and is rich with applications

2026-05-18T14:53:00Z

Calculus by Gilbert Strang — an online book that covers single variable and multivariable calculus in depth, and is rich with applications https://ocw.mit.edu/courses/res-18-001-calculus-fall-2023/

The nth Bit of a Negative Number

2026-05-17T10:07:00Z

The nth Bit of a Negative Number http://janmr.com/posts/nth-bit-of-negative-number/

Algorithms by Jeff Erickson — a free, comprehensive algorithms textbook from the University of Illinois

2026-05-10T14:01:00Z

Algorithms by Jeff Erickson — a free, comprehensive algorithms textbook from the University of Illinois https://jeffe.cs.illinois.edu/teaching/algorithms/

Generating All Permutations

2026-05-09T10:57:00Z

Generating All Permutations http://janmr.com/posts/generating-all-permutations/

The Syntax and Semantics of einsum

2026-05-07T09:05:00Z

The Syntax and Semantics of einsum https://arxiv.org/abs/2509.20020

Full text of the Python Data Science Handbook by Jake VanderPlas

2026-04-30T15:10:00Z

Full text of the Python Data Science Handbook by Jake VanderPlas https://jakevdp.github.io/PythonDataScienceHandbook/

Leap Year Rules

2026-04-29T10:42:00Z

Leap Year Rules http://janmr.com/posts/leap-year-rules/

Readings in Database Systems (commonly known as the "Red Book") has offered readers an opinionated take on both classic and cutting-edge research in the field of data management since 1988

2026-04-26T09:44:00Z

Readings in Database Systems (commonly known as the "Red Book") has offered readers an opinionated take on both classic and cutting-edge research in the field of data management since 1988 http://www.redbook.io

MathNet — a high-quality, large-scale, multimodal, and multilingual dataset of Olympiad-level math problems spanning 47 countries, 17 languages, and two decades

2026-04-22T06:17:00Z

MathNet — a high-quality, large-scale, multimodal, and multilingual dataset of Olympiad-level math problems spanning 47 countries, 17 languages, and two decades https://mathnet.csail.mit.edu #math #problem #collection

Tiling with L-Trominos

2026-04-18T14:50:00Z

Tiling with L-Trominos http://janmr.com/posts/tiling-with-l-trominos/

An algorithm for the machine calculation of complex Fourier series by Cooley and Tukey (1965) — the paper that popularized the Fast Fourier Transform (FFT)

2026-04-12T09:28:00Z

An algorithm for the machine calculation of complex Fourier series by Cooley and Tukey (1965) — the paper that popularized the Fast Fourier Transform (FFT) https://www.ams.org/journals/mcom/1965-19-090/S0025-5718-1965-0178586-1/

The date of Easter can be computed by a number of simple calculations; the earliest possible date for Easter is March 22, and the latest is April 25

2026-04-05T11:03:00Z

The date of Easter can be computed by a number of simple calculations; the earliest possible date for Easter is March 22, and the latest is April 25 https://aa.usno.navy.mil/faq/easter

Comparing Rational Numbers Without Overflow

2026-04-04T15:36:00Z

Comparing Rational Numbers Without Overflow http://janmr.com/posts/comparing-rational-numbers-without-overflow/

Error Detecting and Error Correcting Codes by R. W. Hamming was published on this day in 1950; the paper introduced Hamming codes, a fundamental technique for detecting and correcting errors in digital data

2026-04-02T10:06:00Z

Error Detecting and Error Correcting Codes by R. W. Hamming was published on this day in 1950; the paper introduced Hamming codes, a fundamental technique for detecting and correcting errors in digital data https://archive.org/details/bstj29-2-147

Low-Level Date Algorithms (year/month/day to day epoch and the reverse, among others)

2026-04-01T06:51:00Z

Low-Level Date Algorithms (year/month/day to day epoch and the reverse, among others) https://howardhinnant.github.io/date_algorithms.html

City In A Bottle – A 256 Byte Raycasting System

2026-03-31T13:40:00Z

City In A Bottle – A 256 Byte Raycasting System https://frankforce.com/city-in-a-bottle-a-256-byte-raycasting-system/

Advanced Data Structures from MIT (6.851) — lecture notes and videos covering advanced topics like memory hierarchies, hashing, and geometric data structures

2026-03-28T15:47:00Z

Advanced Data Structures from MIT (6.851) — lecture notes and videos covering advanced topics like memory hierarchies, hashing, and geometric data structures https://courses.csail.mit.edu/6.851/spring21/

Yesterday marked the March equinox, the moment when the Sun crosses the celestial equator moving northward, resulting in nearly equal hours of day and night across the globe and marking the start of astronomical spring in the Northern Hemisphere

2026-03-21T15:38:00Z

Yesterday marked the March equinox, the moment when the Sun crosses the celestial equator moving northward, resulting in nearly equal hours of day and night across the globe and marking the start of astronomical spring in the Northern Hemisphere https://janmr.com/posts/equinoxes-and-solstices/

The XZ Utils backdoor, had it made it into stable versions of major Linux distributions, would have enabled an attacker to silently gain access to any affected system

2026-03-15T10:33:00Z

The XZ Utils backdoor, had it made it into stable versions of major Linux distributions, would have enabled an attacker to silently gain access to any affected system https://www.redhat.com/en/blog/understanding-red-hats-response-xz-security-incident https://www.openwall.com/lists/oss-security/2024/03/29/4 https://www.youtube.com/watch?v=aoag03mSuXQ #linux #security

Bresenham's Line Algorithm

2026-03-10T13:16:00Z

Bresenham's Line Algorithm https://janmr.com/posts/bresenhams-line-algorithm/

Small chess programs

2026-03-08T14:53:00Z

Small chess programs https://nanochess.org/chess.html #chess #programming

The Six Circles Theorem illustrated

2026-03-03T12:50:00Z

The Six Circles Theorem illustrated https://janmr.com/posts/six-circles-theorem-illustrated/

Assignment Expressions was a controversial enhancement to the Python language and played a central role in Guido stepping down as BDFL

2026-03-02T13:57:00Z

Assignment Expressions was a controversial enhancement to the Python language and played a central role in Guido stepping down as BDFL https://peps.python.org/pep-0572/ https://mail.python.org/archives/list/python-committers@python.org/thread/GQONAGWBBFRHVRUPU7RNBM75MHKGUFJN/

Official, Anthropic-managed directory of high quality Claude Code Plugins

2026-03-01T11:08:00Z

Official, Anthropic-managed directory of high quality Claude Code Plugins https://github.com/anthropics/claude-plugins-official https://code.claude.com/docs/en/plugins

Archimedes' Twin Circles Illustrated

2026-02-27T10:34:00Z

Archimedes' Twin Circles Illustrated https://janmr.com/posts/archimedes-twin-circles-illustrated/

The missing semester of your CS education (updated in 2026)

2026-02-23T12:24:00Z

The missing semester of your CS education (updated in 2026) https://missing.csail.mit.edu https://www.youtube.com/playlist?list=PLyzOVJj3bHQunmnnTXrNbZnBaCA-ieK4L

The first release of Python was in February 1991, "Python can be used instead of shell, Awk or Perl scripts, to write prototypes of real applications, or as an extension language of large systems, you name it"

2026-02-20T14:00:00Z

The first release of Python was in February 1991, "Python can be used instead of shell, Awk or Perl scripts, to write prototypes of real applications, or as an extension language of large systems, you name it" https://raw.githubusercontent.com/python/cpython/master/Misc/HISTORY https://www.tuhs.org/Usenet/alt.sources/1991-February/001749.html

Complexity in Computer Science, a book on the fundamental capabilities and limitations of efficient computation

2026-02-16T18:58:00Z

Complexity in Computer Science, a book on the fundamental capabilities and limitations of efficient computation https://complexityincs.com #ComputerScience #complexity #online #book

Thales' Theorem: If A, B and C are points on a circle with the segment AC as a diameter then the angle ∠ABC is a right angle

2026-02-12T06:36:00Z

Thales' Theorem: If A, B and C are points on a circle with the segment AC as a diameter then the angle ∠ABC is a right angle https://janmr.com/posts/thales-theorem-illustrated/

Zig was introduced on this day 10 years ago

2026-02-08T09:57:00Z

Zig was introduced on this day 10 years ago https://andrewkelley.me/post/intro-to-zig.html #zig #programming #language #OnThisDay

An Infinite Series Involving a Sideways Sum

2026-02-05T06:30:00Z

An Infinite Series Involving a Sideways Sum https://janmr.com/posts/infinite-series-involving-sideways-sum/

How does one [easily] calculate , where counts the number of bits '1' in the binary representation of ?

The "RSA Paper" was published on this day in 1978; Rivest, Shamir, and Adleman described the first practical public-key cryptosystem and it is still in wide use today

2026-02-01T15:34:00Z

The "RSA Paper" was published on this day in 1978; Rivest, Shamir, and Adleman described the first practical public-key cryptosystem and it is still in wide use today https://dl.acm.org/doi/10.1145/359340.359342 https://people.csail.mit.edu/rivest/pubs.html

Good Rational Bounds using continued fractions

2026-01-31T15:40:00Z

Good Rational Bounds using continued fractions https://janmr.com/posts/good-rational-bounds/

ANSI101, a visual debugger for ANSI escape sequences

2026-01-29T06:44:00Z

ANSI101, a visual debugger for ANSI escape sequences https://www.ansi101.com https://en.wikipedia.org/wiki/ANSI_escape_code

Basic Multiple-Precision Long Division, sixth post in a series of six on multiple-precision algorithms

2026-01-27T14:54:00Z

Basic Multiple-Precision Long Division, sixth post in a series of six on multiple-precision algorithms https://janmr.com/posts/multiple-precision/06-basic-long-division/

Euclid's algorithm for finding the greatest common divisor of two integers has its worst behavior when the input is consecutive Fibonacci numbers. This result is supposedly the first practical application of Fibonacci's sequence.

2026-01-26T11:27:00Z

Euclid's algorithm for finding the greatest common divisor of two integers has its worst behavior when the input is consecutive Fibonacci numbers. This result is supposedly the first practical application of Fibonacci's sequence. https://en.wikipedia.org/wiki/Euclidean_algorithm#Algorithmic_efficiency

Basic Multiple-Precision Short Division, fifth post in a series of six on multiple-precision algorithms

2026-01-25T11:00:00Z

Basic Multiple-Precision Short Division, fifth post in a series of six on multiple-precision algorithms https://janmr.com/posts/multiple-precision/05-basic-short-division/ #ComputerScience #MultiplePrecision #numbers #algorithms

Java 1.0 was released on this day 30 years ago

2026-01-23T13:29:00Z

Java 1.0 was released on this day 30 years ago https://www.java.com/releases/ https://web.archive.org/web/20070310235103/http://www.sun.com/smi/Press/sunflash/1996-01/sunflash.960123.10561.xml

Basic Multiple-Precision Multiplication, fourth post in a series of six on multiple-precision algorithms

2026-01-21T14:56:00Z

Basic Multiple-Precision Multiplication, fourth post in a series of six on multiple-precision algorithms https://janmr.com/posts/multiple-precision/04-basic-multiplication/

The first Rust compiler was released on this day in 2012

2026-01-20T07:46:00Z

The first Rust compiler was released on this day in 2012 https://web.archive.org/web/20120124160628/https://mail.mozilla.org/pipermail/rust-dev/2012-January/001256.html https://web.archive.org/web/20120111172321/http://www.rust-lang.org/

ASCII characters are not pixels: a deep dive into ASCII rendering

2026-01-18T09:32:00Z

ASCII characters are not pixels: a deep dive into ASCII rendering https://alexharri.com/blog/ascii-rendering

A Simple Sudoku Solver

2026-01-17T15:09:00Z

A Simple Sudoku Solver https://janmr.com/posts/a-simple-sudoku-solver/