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Egyptian Fractions: A Journey Through Ancient Mathematics

2024-12-18

This article explores the fascinating world of Egyptian fractions, a unique mathematical system used by ancient Egyptians. Unlike modern fractions, Egyptian fractions only use unit fractions (fractions with a numerator of 1) and all denominators must be distinct. The article traces the history of Egyptian fractions, focusing on the Rhind Mathematical Papyrus, and examines their practical applications, such as fairly dividing resources. It introduces the greedy algorithm for finding Egyptian fractions and methods for finding the shortest ones, also exploring related unsolved mathematical problems, including the Erdős–Straus conjecture.

(r-knott.surrey.ac.uk)

Misc Egyptian fractions Rhind Mathematical Papyrus Number theory Mathematics history Algorithms

Lessons Learned in Long-Term Software Development

2024-12-22

Lessons Learned in Long-Term Software Development

This article summarizes lessons learned in long-term software development, emphasizing the importance of keeping code simple, carefully choosing dependencies, thorough testing, and strong teamwork. Drawing on interactions with Mastodon users and experiences at the Dutch Electoral Board, the author highlights the significant risks of excessive dependencies, complex code, and frequent team turnover in long-term projects. He advises developers to periodically review dependencies, write extensive test cases, and meticulously document code philosophy and design decisions to address the challenges of long-term maintenance and technological change. The article also underscores the benefits of open source and the importance of simple code, cautioning developers against blindly chasing new technologies and opting instead for time-tested solutions.

(berthub.eu)

Development dependency management code simplicity

Link Rot Investigation: Personal Blogs Face High Risk

2024-12-24

Link Rot Investigation: Personal Blogs Face High Risk

Blogger Wouter Groeneveld conducted a link rot investigation on his blog, Brain Baking. He checked 3179 external links across 453 posts, discovering approximately 7% were broken, with 404 and 403 errors being the most prevalent. Broken links stemmed primarily from personal blogs, followed by corporate sites and other resources. The findings highlight the lower stability of links on personal websites and a high link rot rate in academic papers. The blogger recommends website builders use permalinks, linkers carefully choose their targets, and consider local storage for external resources.

(brainbaking.com)

Misc link rot

LLMs: The Biggest Mistake in Computing?

2024-12-28

The author criticizes Large Language Models (LLMs), arguing they are not the future of computing but a potential setback. For decades, corporations prioritized profit over software quality and user experience, resulting in slow, bloated, and buggy software. LLMs perpetuate this trend, being slow, expensive, and unreliable. The author worries that massive investments will prevent their abandonment, leading to a computing world dominated by a few giants, stifling innovation, and depriving future generations of high-quality software.

(crys.site)

Development Tech Ethics

Generative AI Boosts Productivity: Workers Saving Hours Weekly

2025-02-28

Generative AI Boosts Productivity: Workers Saving Hours Weekly

Research from the Federal Reserve Bank of St. Louis, Vanderbilt University, and Harvard University reveals that generative AI is significantly boosting worker productivity. The study, based on a nationally representative survey, found that users are 33% more productive per hour when using generative AI. More frequent users reported even greater time savings, suggesting a learning curve. Information service workers saw the highest time savings, while leisure and hospitality saw the least. While the widespread adoption of AI is recent, its long-term impact on overall productivity remains uncertain; some workers may use the saved time for leisure rather than increased output.

(www.straitstimes.com)

AI Work Efficiency

Auto-Braking Systems Fail to Detect Pedestrians in Reflective Gear

2025-01-14

Auto-Braking Systems Fail to Detect Pedestrians in Reflective Gear

A new IIHS report reveals that automatic emergency braking (AEB) systems in Honda CR-V and Mazda CX-5 vehicles failed to detect pedestrians wearing reflective strips, even under various lighting conditions. The systems consistently failed to brake, while a Subaru Forester performed better. Researchers urge automakers to improve AEB technology, recommending pedestrians continue to wear reflective gear for increased visibility at night, while acknowledging the limitations of current AEB in some vehicles.

(usa.streetsblog.org)

Tech Automatic Emergency Braking Pedestrian Safety Vehicle Safety

BMW's 'Heart of Joy': Redefining Driving Pleasure in the Electric Era

2025-02-17

BMW's 'Heart of Joy': Redefining Driving Pleasure in the Electric Era

BMW is developing a central computing unit called the "Heart of Joy" to revolutionize the electric driving experience. This small, eight-inch black box integrates driving dynamics and powertrain control, powering BMW's upcoming Neue Klasse electric vehicles. Unlike most manufacturers, BMW developed it in-house, enabling finer control over vehicle performance, improved braking efficiency and stability, faster response times, and lower maintenance costs. The Heart of Joy stems from BMW's reimagining of driving pleasure in an electrified future, aiming to differentiate its EVs and reduce reliance on global supply chains.

(www.theverge.com)

Tech BMW Central Computing Unit

Tenstorrent: An Analysis of the AI Hardware Startup Landscape

2024-12-15

Tenstorrent: An Analysis of the AI Hardware Startup Landscape

This article delves into a deep dive analysis of Tenstorrent, an AI hardware startup. Initially skeptical, the author, after meeting with the Tenstorrent team and gaining a thorough understanding of their architecture (a mesh topology featuring high-performance RISC-V CPU cores and AI cores) and software stack, revised their opinion. The article details Tenstorrent's technical specifications, including its unique Baby RISC-V cores and efforts to reduce latency. The author argues that Tenstorrent's open-source strategy, strong engineering team, and rational business model give it a unique advantage in the competitive AI hardware market, expressing optimism for its future.

(irrationalanalysis.substack.com)

AI AI hardware

Open Source License Dispute: A Fight for Software Freedom

2025-02-13

The Software Freedom Conservancy (SFC) filed an amicus brief supporting a downstream licensee's right to remove “further restrictions” under the Affero General Public License version 3 (AGPLv3) Section 7 in the ongoing Neo4j, Inc. v. PureThink, LLC case. The core issue revolves around whether Neo4j's added “Commons Clause” can be removed. SFC argues that downstream licensees have the right to remove such restrictions under AGPLv3 Section 7, paragraph 4, even if imposed by the original licensor. SFC's brief provides detailed legal analysis of AGPLv3 Sections 7 and 10, arguing that the lower court wrongly sided with Neo4j's interpretation, which could fundamentally alter the community's understanding of adding and removing “further restrictions.” The ruling will have significant implications for software freedom and users' rights.

(sfconservancy.org)

Development legal dispute

Daily Murder Mystery: Solve the Case and Save the Day!

2025-01-15

Daily Murder Mystery: Solve the Case and Save the Day!

Mystery-o-matic is a website offering free daily murder mysteries, created by two passionate individuals. Unlike typical games, its daily mysteries emphasize deductive reasoning and mimic the unpredictability of real-life scenarios, resulting in varied difficulty. Each daily mystery is procedurally generated, offering a fresh twist on traditional deduction games. The website is still in beta, so rules, interface, and design are subject to change.

(mystery-o-matic.com)

Game mystery game daily puzzle deductive reasoning

Elegantly Solving the Problem of Anchor Links on Extremely Long Pages

2025-04-03

Elegantly Solving the Problem of Anchor Links on Extremely Long Pages

This article tackles the problem of anchor links failing to scroll to the correct heading on very long pages. The author explores several solutions, starting with simple padding adjustments, then shifting trigger lines, and finally employing a sophisticated approach involving virtual headings and an optimization algorithm. A cubic polynomial function ensures smooth transitions, addressing issues of layout and user experience. The optimal solution balances maintaining original heading positions with preserving section spacing, resulting in a robust and elegant solution for extremely long pages.

(thirty-five.com)

Development

Zero-Knowledge Proofs Explained: A Deep Dive into the Video

2025-03-21

Zero-Knowledge Proofs Explained: A Deep Dive into the Video

The author released a video explaining zero-knowledge proofs, a complex algorithm that surprisingly requires a lot of work to explain clearly. While the video covers various aspects and applications, it acknowledges the need for more in-depth resources for a complete understanding. The post further details the reduction of satisfiability problems to 3-coloring, discussing the implications for decentralized systems like trustless voting and currency systems. Finally, it introduces non-interactive proofs, showing how cryptographic hash functions can simulate a random beacon to create them, effectively unifying recent video topics.

(vasekrozhon.wordpress.com)

AI zero-knowledge proofs

Best-of-N Jailbreaking: A Novel Attack on AI Systems

2024-12-15

Researchers have developed a new AI attack algorithm called Best-of-N (BoN) Jailbreaking. This black-box algorithm repeatedly modifies prompts—randomly shuffling or capitalizing text, for example—until it elicits a harmful response from the AI system. BoN achieved impressively high attack success rates (ASRs) on closed-source language models like GPT-4o (89%) and Claude 3.5 Sonnet (78%), effectively circumventing existing defenses. Furthermore, BoN seamlessly extends to vision and audio language models, highlighting the vulnerability of even advanced AI systems to seemingly innocuous input variations. This research underscores significant security concerns in the field of AI.

(arxiv.org)

AI AI security AI attack Best-of-N Jailbreaking

True Parallelism with Global Mutable State in Ruby

2025-03-25

This article explores achieving true parallelism with concurrent data structures in Ruby, overcoming the limitation of built-in Ruby primitives that don't support global mutable state for concurrency. The author demonstrates a method to achieve this, requiring familiarity with Ruby, Rust, and C, along with some additional tooling. Code examples are available on GitHub and require a recent Ruby version (master branch recommended for local compilation), Rust, and C compilers.

(iliabylich.github.io)

Development

TypeScript Enums: Use Cases and Alternatives

2025-01-20

This blog post takes a closer look at TypeScript enums: How do they work? What are their use cases? What are the alternatives if we don’t want to use them? The post concludes with recommendations for when to use which approach. It covers enum basics, use cases (e.g., namespace for constants with primitive values, custom type with unique values, namespace for constants with object values), alternatives (e.g., object literals, union of string literal types), and how to perform exhaustiveness checks and enumerate members.

(2ality.com)

Development Enums

Unveiling the Deep Connection Between Maximum Likelihood Estimation and Loss Functions

2024-12-15

Unveiling the Deep Connection Between Maximum Likelihood Estimation and Loss Functions

This article delves into the intrinsic relationship between Maximum Likelihood Estimation (MLE) and commonly used loss functions. Starting with the fundamentals of MLE, the author meticulously explains its close connection to KL divergence. The article then uses Mean Squared Error (MSE) and Cross-Entropy as examples, demonstrating how these functions are naturally derived from MLE rather than being arbitrarily chosen. By assuming data distributions (e.g., Gaussian for linear regression, Bernoulli for logistic regression), maximizing the likelihood function via MLE directly leads to MSE and Cross-Entropy loss functions. This provides a clear path to understanding the theoretical underpinnings of loss functions, moving beyond mere intuition.

(rish-01.github.io)

AI Maximum Likelihood Estimation Loss Functions

Making Metal on Mars: In-Situ Resource Utilization for Martian Settlements

2025-09-07

Making Metal on Mars: In-Situ Resource Utilization for Martian Settlements

Transporting metals from Earth to Mars is prohibitively expensive. Researchers from Swinburne University of Technology and CSIRO are exploring in-situ resource utilization (ISRU) by producing metals from Martian regolith. They've successfully produced iron using a regolith simulant, paving the way for sustainable metal production on Mars and potentially revolutionizing metallurgy on Earth.

(www.csiro.au)

Tech metal production ISRU

LLM Standardization Directory: Enabling AI Website Integration

2024-12-23

A proposed standard, `/llms.txt`, aims to simplify the interaction between large language models (LLMs) and websites. This directory curates companies and products leading the adoption of this standard, spanning AI developer tools, financial products, websites, and more. The goal is to improve the efficiency and accuracy of LLMs interacting with diverse websites.

(directory.llmstxt.cloud)

AI standardization website integration

Python Core Devs Summit: JITs, Virtual Threads, and the Future

2025-06-15

The annual Python core developers' summit showcased exciting discussions. Meta engineers explored pluggable JIT compilers, aiming to simplify development via new APIs. Insights from Java spurred discussions on virtual threads for Python, boosting concurrency. The summit also featured debates on null-coalescing operators, AI-assisted coding tools, and the 'worse is better' philosophy. Finally, developers called for memory benchmark focus and delved into the future evolution of T-strings' type system.

(pyfound.blogspot.com)

Development

AWS Labs MCP Server Suite: Boosting Your Development Workflow

2025-04-03

AWS Labs MCP Server Suite: Boosting Your Development Workflow

AWS Labs has released a suite of specialized MCP servers that bring AWS best practices directly to your development workflow. This suite includes a core server for managing other AWS Labs MCP servers, as well as servers for accessing Amazon Bedrock Knowledge Bases, analyzing AWS CDK projects, performing AWS cost analysis, and generating images using Amazon Nova Canvas. Each server has specific installation instructions, generally involving installing uv, Python 3.10, and configuring AWS credentials. Detailed documentation and API references are available on the official website.

(github.com)

Development MCP Servers Dev Tools

ChatGPT for macOS Now Directly Edits Code

2025-03-06

ChatGPT for macOS Now Directly Edits Code

OpenAI announced that its ChatGPT macOS app now features direct code editing capabilities, supporting developer tools like Xcode, VS Code, and JetBrains. The feature is available to paying users now, with a rollout to free users planned for next week. This builds on the "work with apps" functionality launched in November 2024, minimizing the need for copy-pasting code. This puts ChatGPT in more direct competition with AI coding tools like Cursor and GitHub Copilot, and OpenAI reportedly plans a dedicated software engineering product. While AI coding tools are gaining popularity, concerns remain about security, copyright, and reliability risks, including increased debugging time for AI-generated code.

(techcrunch.com)

Development Code Editing AI Coding

Neutron Star Interior Unveiled: Lattice QCD Breaks Sound Speed Barrier

2025-03-07

Neutron Star Interior Unveiled: Lattice QCD Breaks Sound Speed Barrier

For the first time, researchers used lattice quantum chromodynamics (LQCD) to study neutron star interiors, obtaining a new upper bound for the speed of sound within the star and a better understanding of the relationship between pressure, temperature, and other properties. This research overcame challenges in solving quantum chromodynamics equations under strong interactions. By introducing isospin to simplify calculations, the team concluded that the speed of sound in neutron stars may exceed c/√3, opening new avenues for further research into neutron star properties.

(phys.org)

Tech neutron star quantum chromodynamics speed of sound

Building AI Products: A Backend Architecture Deep Dive

2024-12-27

This article details the journey of an AI team building an AI-powered Chief of Staff for engineering leaders. Initially using simple inference pipelines, they transitioned to a multi-agent system as the application grew. The author explains agent design principles, differences from microservices, and object-oriented implementation. Memory management, including CQRS and event sourcing, and handling natural language events are discussed. Scaling to 10,000 users involved sharding, asynchronous programming, LLM call optimization, and migration to Temporal.

(philcalcado.com)

AI AI Architecture Agent Systems Backend Development

Lisp Interpreter in 99 Lines of C

2025-08-17

Lisp Interpreter in 99 Lines of C

This article presents Tinylisp, a Lisp interpreter implemented in a mere 99 lines of C code. Leveraging NaN boxing and clever C programming techniques, it boasts 21 built-in Lisp primitives, simple garbage collection, and a REPL. The author details its design, implementation, and extension possibilities, even providing examples of running it on a vintage Sharp PC-G850 pocket computer. Tinylisp's concise code is readily understandable and extensible, making it an excellent learning resource for both Lisp and C.

(github.com)

Development

Reprompt: Fast-Track Your AI Career by 3-4 Years

2025-02-01

Reprompt: Fast-Track Your AI Career by 3-4 Years

Reprompt is hiring! Want to accelerate your AI career? Join us and gain 3-4 years of experience in just three. Become a top 0.01% AI expert, collaborate with experienced engineers from Facebook, Robinhood, and Mapbox, and learn fundraising, product management, and team leadership. You'll build cutting-edge AI data extraction systems. A collaborative spirit, adaptability, and a strong work ethic are essential.

(www.ycombinator.com)

Development Career Development

Personal Digital Archives: Unique Data Treasures in the Age of AI

2025-03-19

Personal Digital Archives: Unique Data Treasures in the Age of AI

In her latest bi-weekly newsletter, Linda explores the value of personal digital archives. She argues that in today's age of generative AI tending toward mediocrity, these archives, containing unique personal experiences, preferences, and perspectives, become valuable resources for training AI models and creating more personalized works. The article uses the author's own experience of collecting books, images, and links as an example, and combines the perspectives of historians to illustrate the importance of personal archives in the age of AI. Several examples of personal archives in Finland are also given. Finally, the author calls on readers to share their own collected items and stories, showcasing the richness and unique charm of personal archives.

(helloruby.substack.com)

AI Data Personal Archives

McDonald's: A Microcosm of American Life

2024-12-16

McDonald's: A Microcosm of American Life

Author Chris Arnade offers a unique perspective on American society by observing McDonald's restaurants across the US. From Trump's political stunt at a McDonald's to its role as a refuge for the mentally ill and a de facto community center, Arnade argues that McDonald's transcends its fast-food identity, reflecting the connections between people and the yearning for belonging in American society. He highlights the elite's tendency to overlook the value of these grassroots communities, emphasizing that these organically formed social hubs are a testament to the resilience of American society.

(www.thefp.com)

Misc American Society McDonald's Community

The Ultimate Guide to Setting Your PATH in Bash, Zsh, and Fish

2025-02-17

This guide provides a comprehensive walkthrough of adding directories to your PATH environment variable across different shells like bash, zsh, and fish. It addresses common pitfalls, such as locating the correct configuration file, handling duplicate entries, and configuring PATH within cron jobs. The author uses real-world examples to guide you through the process, ensuring you can successfully run programs after mastering PATH configuration.

(jvns.ca)

Development Environment Variables

The Axiom of Choice: A Century of Debate

2025-06-13

This paper delves into the century-long debate surrounding the Axiom of Choice in mathematics. From Cantor's well-ordering principle to Zermelo's proof and introduction of the Axiom of Choice, the mathematical community engaged in heated discussions. The article deeply analyzes different forms of the Axiom of Choice, including the constructive and extensional versions, highlighting the issue with the extensional version: it violates the principle of 'you cannot get something from nothing'. Through proofs in constructive type theory, the paper reveals the relationship between the extensional Axiom of Choice, Zermelo's Axiom of Choice, and the topos-theoretic Axiom of Choice, concluding that the extensional Axiom of Choice is the correct rendering of Zermelo's Axiom in constructive type theory.

(research.mietek.io)

Misc mathematical foundations axiom of choice constructive mathematics

Mermaid Chart VS Code Plugin: Effortless Mermaid.js Diagramming in Your IDE

2025-04-02

Mermaid Chart VS Code Plugin: Effortless Mermaid.js Diagramming in Your IDE

The Mermaid Chart VS Code plugin empowers developers with a robust diagramming tool, directly within their Visual Studio Code environment. Create and edit Mermaid.js diagrams effortlessly – no account needed for basic features. Enjoy real-time rendering, syntax highlighting, and seamless Markdown integration. The plugin automatically recognizes .mmd files. Advanced capabilities like cloud sync, team collaboration, and AI-powered diagram generation are unlocked by logging into a Mermaid Chart account. Whether visualizing workflows, software architecture, or API flows, this plugin boosts productivity, supports offline editing, and integrates flawlessly with Git version control.

(docs.mermaidchart.com)

Development VS Code Plugin Diagramming Tool

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