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Fermat's Last Theorem Proof: Computers Tackle a Math Challenge

2024-12-12

A team is attempting to prove Fermat's Last Theorem using Lean, encountering unexpected challenges along the way. Instead of relying on the original proof, they're using a modern, more generalized approach. While formalizing crystalline cohomology, they discovered an error in a key lemma, leading to a re-examination of the theory's foundations. They ultimately found a workaround using an alternative proof. This experience highlights potential errors in modern mathematical literature and underscores the need for formalized proofs.

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(xenaproject.wordpress.com)
Development Fermat's Last Theorem Formalized Mathematics

Google Unveils Android XR: A New Platform for Headsets and Glasses

2024-12-12

Google, in partnership with Samsung and Qualcomm, announced Android XR, a platform designed to extend reality for exploration, connection, and creation. Leveraging AI advancements, Android XR enables headsets and glasses to understand user intent and context, facilitating more natural interactions. The first device, codenamed Project Moohan and built by Samsung, will launch next year and features integration with Gemini AI, pre-installed apps like YouTube and Google TV, and seamless transitions between virtual and real environments. Future plans include support for glasses offering everyday assistance.

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(blog.google)
Tech Extended Reality Artificial Intelligence

From New Grad to Meta Staff Engineer in 3 Years: Evan King's Success Story

2024-12-14

Evan King shares his journey of rapidly advancing from a new graduate to a Staff Engineer at Meta in just three years. His six key principles for success include: prioritizing speed and efficiency to free up time for growth; broadening perspective to think strategically like a higher-level engineer; embracing uncertainty and sharing ideas freely; focusing on problem-solving over technical complexity; building goodwill and strong relationships; and maintaining a positive attitude. While acknowledging the role of luck and timing, Evan emphasizes the importance of cultivating sustainable habits that compound over time, focusing on core competencies and strategically utilizing the extra bandwidth created by efficiency.

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(www.developing.dev)
Development career growth promotion software engineering

Fujitsu's Monaka CPU: An ARMv9 Datacenter Beast with SVE2 and 3D Stacking

2024-12-14

Fujitsu is set to launch Monaka, a new datacenter CPU slated for a 2027 release. This ARMv9-based processor boasts SVE2 extensions and utilizes 3D stacking, resembling AMD's EPYC architecture with a central IO die and disaggregated SRAM and compute units. Each Monaka CPU will pack up to 144 cores across four 36-core chiplets, all built on a 2nm process. The IO boasts 12 channels of DDR5 (potentially exceeding 600GB/s bandwidth), PCIe 6.0 with CXL 3.0 support, and air-cooling capability. Unlike its predecessor, A64FX, Monaka omits HBM support and targets the general datacenter market.

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(chipsandcheese.com)
Hardware 3D Stacking

Italian Town Solves Winter Darkness with Giant Mirror

2024-12-13

Nestled in a valley between Italy and Switzerland, the town of Viganella suffers from three months of winter darkness each year. To combat this, in 2006, residents ingeniously installed a massive mirror on a nearby mountain peak. This mirror reflects sunlight into the town square, providing much-needed light and warmth during the long winter. The project, a testament to human ingenuity and community spirit, has since inspired similar initiatives worldwide.

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(www.vice.com)
Tech innovation community

QEMU Gains Vulkan Acceleration with VirtIO GPU Driver Update

2024-12-12

QEMU version 9.2.0 and later now supports Vulkan acceleration for VirtIO-GPU thanks to the Venus patches. This represents a significant advancement in Vulkan graphics rendering for QEMU virtual machines. The article details the setup process, including installing necessary packages (Linux kernel 6.13+, QEMU 9.2.0+, Vulkan drivers, etc.), building QEMU from source, and creating a VM image. While virt-manager currently lacks Vulkan configuration support, command-line parameters offer a workaround. Troubleshooting tips are provided, along with notes on current limitations in virt-manager and libvirt.

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(gist.github.com)
Development

Novel Link Between Cell Nutrition and Identity Could Improve Immunotherapies

2024-12-12

Scientists at the Salk Institute have discovered a nutritional switch from acetate to citrate is key in determining T cell fate, shifting them from active effector cells to exhausted ones. Published in Science, the findings reveal that different nutrients alter a cell's gene expression, function, and identity. This groundbreaking research offers new therapeutic targets for immunotherapies, potentially keeping T cells active against chronic diseases. The discovery highlights a direct link between cellular function and nutrition, opening new avenues for treating chronic illness.

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(www.genengnews.com)
AI Immunotherapy T cells Cellular Metabolism

Bonscore: Independent Credit Scoring for Businesses

2024-12-12

Bonscore offers an independent and transparent credit scoring service for businesses. Data is sourced directly from the company register, ensuring objectivity and preventing manipulation. Unlike traditional credit agencies, Bonscore uses proprietary algorithms to assess the probability of default, providing industry benchmarks for comparison. This empowers businesses to evaluate the creditworthiness of potential and existing clients, competitors, and suppliers, leading to more informed business decisions such as: vetting new clients, analyzing existing client payment behavior, participating in tenders, assessing supplier reliability, analyzing competitor financial health, and making credit decisions.

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(bonscore.org)
Startup business credit scoring risk assessment business decisions

Four's Company: The Ideal Number for Engaging Conversations

2024-12-14

Research by Professor Robin Dunbar of Oxford University suggests that four is the magic number for enjoyable conversations. In groups of five or more, the likelihood of shared laughter decreases significantly, with conversations often devolving into a lecture-style dynamic. While known for 'Dunbar's number' – the theory that most people can maintain around 150 social connections – his latest research focuses on smaller group dynamics, concluding that groups of four optimize engaging and enjoyable social interactions.

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(www.thetimes.com)
Misc social interaction group size conversation

SCCS: The Source Code Motel After 50 Years

2024-12-13

This article retrospectively examines the influence of the Source Code Control System (SCCS) over the past 50 years. Author Larry McVoy details SCCS's unique weave format, which allows for merging by reference, avoiding the inefficiencies of patch-based copying found in other systems. He explains how SCCS leverages this weave to retrieve any file version in constant time and preserves authorship across versions. While acknowledging shortcomings like long-term locks and file-orientation, McVoy highlights the efficiency of the weave format and its preservation of authorship as groundbreaking, laying the groundwork for later systems like BitKeeper.

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(www.tuhs.org)
Development Source Code Management

Mastering Ruby Debugging: From puts to Professional Tools

2024-12-13

This JetBrains RubyMine blog post delves into various approaches to debugging Ruby code, ranging from basic `puts` statements to interactive consoles (IRB and Pry) and powerful debuggers (byebug, debug, and the RubyMine debugger). Using a real-world bug example, it highlights the strengths and weaknesses of each tool, guiding developers in selecting the most appropriate debugger for improved efficiency. The article emphasizes that effective debugging isn't just about fixing errors; it's about gaining a fundamental understanding of the code to write more robust Ruby applications.

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(blog.jetbrains.com)
Development Ruby debugging debugging tools

Hexagonal Architecture in Rails: A Path to Decoupling

2024-12-13

This article explores implementing Hexagonal Architecture (Ports and Adapters pattern) in Rails applications. The author initially struggled with the pattern until realizing that 'adapter' directly refers to the Gang of Four Adapter Pattern. The article details inbound and outbound ports, and how adapters decouple application logic from external services (databases, logging, email, etc.). Rails controllers can serve as HTTP adapters, but the author stresses avoiding direct ActiveRecord usage. Instead, custom repositories access data, improving decoupling and maintainability. The article concludes by encouraging Rails developers to adopt Hexagonal Architecture for more robust and maintainable applications.

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(the.codegardener.com)
Development Hexagonal Architecture

US Health Insurers Hiding a Dirty Secret: Soaring Denial Rates

2024-12-13

This article exposes a dark secret within the US health insurance industry: claim denial rates have skyrocketed tenfold in the last decade. Insurers are no longer selling insurance, but a gamble. Government agencies have failed to fulfill their oversight responsibilities, allowing denial rates to soar, severely harming consumers. Some insurers deny up to 42% of claims, sparking public outrage and even leading to the murder of UnitedHealthcare's CEO. The article calls for government transparency on denial rates to protect consumers.

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(nypost.com)
Misc health insurance denial rates consumer protection

$800 Emotional Support Robot for Kids Bricked, No Refunds

2024-12-12

Embodied, the maker of the $800 Moxie robot for kids, is shutting down, leaving thousands of children without their robotic companions. The company blamed a failed funding round for its closure, and announced that Moxie's cloud connectivity will be severed, rendering the robots inoperable. While Embodied expressed some willingness to refund recent purchases, they offer no guarantees, leaving many parents facing significant financial losses alongside their children's emotional distress. This incident highlights concerns about the lack of long-term support for smart devices and the potential for significant consumer disappointment.

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(arstechnica.com)
Tech robot children refund

C++ Compiler Errors: Nonsensical Errors from a Function Declaration

2024-12-12

A developer adding XAML support to a C++ application encountered a series of compiler errors simply by including the winrt/Windows.UI.Xaml.h header file. The errors stemmed from what appeared to be a normal function declaration: `template struct consume_Windows_UI_Xaml_IExceptionRoutedEventArgs { [[nodiscard]] auto ErrorMessage() const; };` The root cause was a pre-existing macro named ErrorMessage in the developer's project, conflicting with the function name. This macro created an ErrorMessageString object and returned a pointer to an error message string. The macro's lack of boundaries caused the compiler to misinterpret the function declaration as a macro invocation, resulting in errors like "not enough arguments." The solution involved disabling the macro using #pragma undef before including the header or removing the macro entirely and replacing it with an inline function.

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(devblogs.microsoft.com)
Development compiler errors macro conflict Compiler Errors Macro Definition macro

Mullvad VPN App's 2024 Security Audit Report Released

2024-12-12

Mullvad VPN has released the report for its 2024 third-party security audit of its VPN app. The audit uncovered six vulnerabilities, ranging in severity from low to high, all of which have been addressed. Three high-severity vulnerabilities involved signal handlers and a virtual IP address leak and have been fixed in the latest version. The audit also noted some non-security issues that Mullvad is actively working to resolve. Overall, the Mullvad VPN app is deemed highly secure, but users are still advised to upgrade to the latest version.

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(mullvad.net)
Tech VPN security security audit vulnerability fixes

Great Question (YC) Hiring People Operations Manager

2024-12-12

Great Question, a YC-backed startup simplifying customer research, is seeking an experienced People Operations Manager. This role will focus on streamlining recruitment, onboarding, compensation standardization, and enhancing company culture to boost employee engagement and retention. The ideal candidate will have 3+ years of experience in people operations, expertise in compensation and performance management, excellent communication skills, and a proven ability to thrive in a remote work environment. This is a crucial opportunity to contribute to a rapidly growing startup.

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(www.ycombinator.com)
Startup Hiring People Operations YC Startup

Hanami Core Team Member Peter Solnica Announces Retirement

2024-12-12

Peter Solnica, a core developer of the Hanami framework, recently announced his retirement from the core team. After two years of reflection, he decided to dedicate more time to his family and pursue a better work-life balance. Solnica expressed gratitude to numerous individuals and organizations that significantly impacted his career, including Lunar Logic, the DataMapper team, and Hanami team members. He stated that while no longer a core team member, he will continue to support Hanami's development and maintain contact with the community. Solnica's retirement doesn't reflect a loss of faith in Hanami, but rather a personal adjustment in time management and life priorities, shifting his focus to family and Elixir development.

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(solnic.dev)
Development Open Source Retirement

Scheduled Reboots: A Preventative Approach

2024-12-13

A university research team faced a challenging sysadmin problem: their servers had been running for too long and needed rebooting, but frequent reboots disrupt user experience. Their default was to avoid reboots, but a recent large-scale reboot due to prolonged uptime forced a change. To prevent similar issues, they've decided on a yearly reboot schedule—at least three times a year, aligning with the university's teaching schedule—balancing preventative maintenance with user experience.

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(utcc.utoronto.ca)
Development server maintenance system administration scheduled reboots

Concurrent Cycle Collection: Garbage-Collected Smart Pointers in Rust for Scheme

2024-12-13

This article details the implementation of a concurrent cycle collector in Rust for garbage-collected smart pointers (Gc) within a Scheme interpreter. Gc functions similarly to Arc>, supporting interior mutability, cloning, and sending across threads. The article thoroughly explains the implementation of Gc, including thread-safe interior mutability using semaphores and read/write locks, and the implementation details of concurrent cycle collection based on the Bacon and Rajan algorithm. This includes the Trace trait, cycle detection, and mechanisms for handling concurrent modifications.

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(maplant.com)
Development Garbage Collection Concurrency

Caves of Qud's Gigantic World Map: A 13.8 Gigapixel Adventure

2024-12-13

The upcoming sci-fi roguelike Caves of Qud, launching December 5th, boasts a massive world map totaling an astounding 13.8 gigapixels! This immense map consists of 240 x 75 zones, each zone containing 25 x 80 tiles, with each tile being 16 x 24 pixels. A web viewer allows exploration of the surface and even the first underground level (the remaining 2 billion+ levels are omitted due to data size). This breathtaking scale promises an epic, fantastical adventure, ripe with exploration possibilities.

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(kernelmethod.org)
Game Caves of Qud World Map

Mirror Bacteria Research Raises Significant Risks, Scientists Warn

2024-12-13

Synthetic biologists have achieved remarkable breakthroughs, such as creating bacteria with chemically synthesized genomes. However, two synthetic biologists recently joined other scientists in calling for a halt to research that could lead to the creation of "mirror bacteria." These bacteria are composed of the same components as natural cells but with opposite stereochemistry in all biopolymers. Because mirror bacteria might lack natural predators and evade immune systems, they pose a catastrophic risk. The article emphasizes that while scientific research should be open, certain research, like mirror bacteria research, is too risky given the potential for devastating consequences. Therefore, it should be stopped.

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(www.the-scientist.com)
Tech synthetic biology mirror bacteria biosafety

Ultralytics Suffers Supply Chain Attack: A PyPI Security Incident Analysis

2024-12-14

The Python project Ultralytics recently suffered a supply chain attack. Attackers compromised the project's GitHub Actions workflows and stole a PyPI API token, resulting in tainted versions 8.3.41, 8.3.42, 8.3.45, and 8.3.46. The attack didn't exploit a PyPI vulnerability but targeted the GitHub Actions cache. PyPI, leveraging Trusted Publishing and Sigstore transparency logs, quickly identified and removed the malicious software. The incident highlighted shortcomings in API token and GitHub environment configurations. The article stresses securing software forges and build/publish workflows, providing developers with security recommendations: using Trusted Publishers, locking dependencies, avoiding insecure patterns, and enabling multi-factor authentication.

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(blog.pypi.org)
Development supply chain attack PyPI security software security

Building a Simple Object System from Scratch in Ruby

2024-12-15

This blog post details building a basic object system in Ruby without using classes. The author cleverly uses anonymous functions and hash tables to implement core OOP concepts like method lookup, prototypal inheritance, mixins, and metaprogramming. Starting with a constructor function, the post demonstrates simulating private variables and public interfaces, effectively recreating class-like behavior and inheritance. Through clear code examples, readers learn to create objects, define methods, implement inheritance and mixins, and even build a rudimentary `attr_accessor`-like metaprogramming feature. It's a practical guide to understanding object system fundamentals.

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(metacircu1ar.github.io)
Development Object-Oriented Programming Metaprogramming

MIT Develops Noninvasive Imaging Method for Deeper Tissue Penetration

2024-12-13

MIT researchers have developed a novel noninvasive imaging technique that more than doubles the depth limit of metabolic imaging. Using high-powered lasers and a specialized fiber shaper, the method minimizes light scattering, allowing for clearer and faster imaging of living tissue. This label-free approach avoids tissue preprocessing, providing a more natural representation of cellular structures and functions. The increased depth penetration and speed promise significant advancements in cancer research, tissue engineering, drug discovery, and immunology.

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(news.mit.edu)
Tech biomedical imaging laser technology in vivo imaging

Breakthrough in Reachability Analysis of the Domain Name System

2024-12-12

Researchers have presented the first decision procedure for verifying the Domain Name System (DNS), establishing its complexity as 2ExpTime. The study formalizes DNS semantics and uses a novel abstraction based on positive prefix-testable languages, reducing the DNS verification problem to the verification problem for pushdown systems. This approach effectively models attack vectors in DNS, such as amplification attacks and rewrite blackholing, providing a new theoretical foundation for ensuring DNS security and reliability.

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(arxiv.org)
Development DNS security formal verification reachability analysis

High-Resolution Bitmap Graphics with Commodore 64 BASIC 2.0: A Fast Screen Clearing Routine

2024-12-12

This article demonstrates efficient high-resolution bitmap graphics handling in Commodore 64 BASIC 2.0, focusing on a fast screen clearing routine. The author points out that native BASIC lacks direct bitmap manipulation commands, making conventional clearing slow. A clever solution utilizes the BASIC string storage mechanism: long strings filled with CHR$(0) overwrite the bitmap memory, achieving fast clearing. The technique is illustrated with a cosine function plotting example.

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(retro64.altervista.org)
Development Bitmap Graphics
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