janmr.com

BLAS is was announced on this day in 1979: Basic Linear Algebra Subprograms for Fortran Usage

2026-09-01T11:47:00Z

BLAS is was announced on this day in 1979: Basic Linear Algebra Subprograms for Fortran Usage https://dl.acm.org/doi/10.1145/355841.355847 https://netlib.org/blas/

Parallel Computing from Stanford — a free YouTube playlist covering parallel programming concepts, GPU computing, and performance optimization

2026-08-30T11:28:00Z

Parallel Computing from Stanford — a free YouTube playlist covering parallel programming concepts, GPU computing, and performance optimization https://www.youtube.com/playlist?list=PLoROMvodv4rMp7MTFr4hQsDEcX7Bx6Odp

SciPy 0.1 was released on this day in 2001

2026-08-19T10:38:00Z

SciPy 0.1 was released on this day in 2001 https://mail.python.org/pipermail/python-list/2001-August/106419.html

Introduction to the Finite Element Method: Weak Formulation of Elliptic PDEs

2026-08-16T14:08:00Z

Introduction to the Finite Element Method: Weak Formulation of Elliptic PDEs https://janmr.com/posts/finite-element-method/continuous/elliptic-weak-form/

TheoremDB — A public workspace for machine mathematics: open problems, permanent records of proofs and attempts, evidence and credit

2026-08-09T14:34:00Z

TheoremDB — A public workspace for machine mathematics: open problems, permanent records of proofs and attempts, evidence and credit https://theoremdb.org

Introduction to the Finite Element Method: Example of Weak Solution to the Poisson Problem

2026-08-06T13:01:00Z

Introduction to the Finite Element Method: Example of Weak Solution to the Poisson Problem https://janmr.com/posts/finite-element-method/continuous/poisson-weak-example/

A peer-reviewed video journal for mathematical research talks

2026-08-03T13:11:00Z

A peer-reviewed video journal for mathematical research talks https://www.mathematicaldiscourse.org

Introduction to the Finite Element Method: Weak Formulation of the Poisson Problem

2026-08-01T14:30:00Z

Introduction to the Finite Element Method: Weak Formulation of the Poisson Problem https://janmr.com/posts/finite-element-method/continuous/poisson-weak-form/

Given n people, you can arrange n(n−1)/2 matches between them. If n is even, you can do n−1 rounds of n/2 matches; if n is odd, n rounds of (n−1)/2 matches.

2026-07-30T10:56:00Z

Given n people, you can arrange n(n−1)/2 matches between them. If n is even, you can do n−1 rounds of n/2 matches; if n is odd, n rounds of (n−1)/2 matches. https://en.wikipedia.org/wiki/Round-robin_tournament#Scheduling_algorithm

Introduction to the Finite Element Method: General Elliptic PDEs

2026-07-28T13:43:00Z

Introduction to the Finite Element Method: General Elliptic PDEs https://janmr.com/posts/finite-element-method/continuous/elliptic-pdes/

Freely available programming books, a large, community-curated list of free learning resources in many languages and topics

2026-07-26T10:08:00Z

Freely available programming books, a large, community-curated list of free learning resources in many languages and topics https://ebookfoundation.github.io/free-programming-books/

Introduction to the Finite Element Method: The Poisson Problem

2026-07-24T12:07:00Z

Introduction to the Finite Element Method: The Poisson Problem https://janmr.com/posts/finite-element-method/continuous/poisson-problem/

Dictionary of Algorithms and Data Structures from NIST — a free online reference for algorithm and data structure terminology

2026-07-22T09:46:00Z

Dictionary of Algorithms and Data Structures from NIST — a free online reference for algorithm and data structure terminology https://xlinux.nist.gov/dads/

Linus Torvalds on using AI for Linux: "I realize that some people really dislike AI, but this is an area where I'm willing to absolutely put my foot down as the top-level maintainer."

2026-07-20T09:11:00Z

Linus Torvalds on using AI for Linux: "I realize that some people really dislike AI, but this is an area where I'm willing to absolutely put my foot down as the top-level maintainer." https://lore.kernel.org/linux-media/CAHk-=wi4zC+Ze8e+p3tMv8TtG_80KzsZ1syL9anBtmEh5Z40vg@mail.gmail.com/

Neural Networks - The Optimization Problem

2026-07-19T11:35:00Z

Neural Networks - The Optimization Problem http://janmr.com/posts/neural-networks/04-the-optimization-problem/

Introduction to the Theory of Programming Languages by Bertrand Meyer — free book covering formal foundations of programming languages

2026-07-17T11:08:00Z

Introduction to the Theory of Programming Languages by Bertrand Meyer — free book covering formal foundations of programming languages https://bertrandmeyer.com/itpl/

A Mathematical Theory of Communication by C. E. Shannon (1948) — the foundational paper that established information theory

2026-07-15T12:31:00Z

A Mathematical Theory of Communication by C. E. Shannon (1948) — the foundational paper that established information theory https://people.math.harvard.edu/~ctm/home/text/others/shannon/entropy/entropy.pdf

Maximum Overhang: How far can a stack of n identical blocks be made to hang over the edge of a table?

2026-07-05T14:25:00Z

Maximum Overhang: How far can a stack of n identical blocks be made to hang over the edge of a table? https://arxiv.org/abs/0707.0093

Introduction to Neural Networks, part 3: Multiple Inputs

2026-06-28T13:28:00Z

Introduction to Neural Networks, part 3: Multiple Inputs http://janmr.com/posts/neural-networks/03-multiple-inputs/

Today marks the June solstice, the longest day in the Northern Hemisphere and the shortest day in the Southern Hemisphere. At 08:24 UTC the North Pole is tilted maximally (about 23.4°) towards the Sun.

2026-06-21T08:24:00Z

Today marks the June solstice, the longest day in the Northern Hemisphere and the shortest day in the Southern Hemisphere. At 08:24 UTC the North Pole is tilted maximally (about 23.4°) towards the Sun. https://janmr.com/posts/equinoxes-and-solstices/

Stanford Engineering Everywhere — includes the three-course Introduction to Computer Science, taken by the majority of Stanford’s undergraduates, as well as more advanced courses in artificial intelligence and electrical engineering

2026-06-19T11:58:00Z

Stanford Engineering Everywhere — includes the three-course Introduction to Computer Science, taken by the majority of Stanford’s undergraduates, as well as more advanced courses in artificial intelligence and electrical engineering https://see.stanford.edu

The Joy of Cryptography — an undergraduate-level textbook introducing the fundamentals of provable security

2026-06-16T12:19:00Z

The Joy of Cryptography — an undergraduate-level textbook introducing the fundamentals of provable security https://joyofcryptography.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/