Mathematics for Computer Science (2018) [pdf]
from courses.csail.mit.edu
232
by
vismit2000
8h ago
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Article:
1d 22h 40m
This text explains the concept of proofs in mathematics and computer science. It covers topics such as propositions, logical formulas (including NOT, AND, OR, IF-THEN, IFF), proof techniques like direct proof, proof by contradiction, and well ordering principle. The text also discusses the algebra of propositional logic, validity, satisfiability, and introduces predicate logic with quantifiers (FOR ALL, THERE EXISTS). It touches on the SAT problem, its relation to computational complexity, and the P vs NP question.
The discussion of the SAT problem and P vs NP question highlights the importance of computational complexity theory and its potential impact on various fields such as cryptography, security, and algorithm design.
- Propositions are statements that can be either true or false.
- Logical formulas combine propositions using operators like AND, OR, NOT, IMPLIES.
- Quantifiers specify the scope of variables in logical expressions (FOR ALL, THERE EXISTS).
- Algebraic methods can prove equivalences between logical formulas.
- Validity and satisfiability determine whether a formula is always true or sometimes true.
- Predicate logic extends propositional logic with quantifiers over domains.
Quality:
The text provides a clear and comprehensive overview of proofs in mathematics and computer science, with a focus on logical formulas and predicate logic.
Discussion (36):
Comment analysis in progress.
Computer Science
Theoretical Computer Science, Formal Methods
Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
from hackster.io
70
by
walterbell
5d ago
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Article:
4 min
Developer Jesse Taube successfully bootstraps a minimal Linux distribution on Raspberry Pi Pico 2's RP2350 microcontroller, utilizing its Hazard3 RISC-V cores.
Enhances the versatility of microcontrollers in computing tasks, potentially leading to more innovative applications and projects.
- Jesse Taube's achievement in bootstrapping Linux
- Use of Hazard3 RISC-V cores
- Availability on SparkFun Pro Micro RP2350
Discussion (21):
Comment analysis in progress.
Computer Science
Hardware, Software Development
Sorted string tables (SST) from first principles
from bitsxpages.com
21
by
apurvamehta
3d ago
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Article:
43 min
This blog post delves into the intricacies of data layout on disk, specifically focusing on Sorted String Tables (SSTs), and their implications for high-performance data systems. It discusses SSDs, memory management, read amplification, spatial & temporal locality, and the importance of designing keys to optimize storage efficiency.
The optimization of data storage and retrieval can lead to more efficient use of resources, potentially reducing costs for businesses and improving user experience in applications that rely on fast data access.
- Understanding how data is laid out on disk, specifically focusing on SSTs.
- The importance of SSDs in modern cloud instances.
- Reducing read amplification through spatial and temporal locality.
Quality:
The article provides detailed technical insights without overly sensationalizing the information.
Discussion (1):
More comments needed for analysis.
Data
Storage Systems, Database Design
How to Code Claude Code in 200 Lines of Code
from mihaileric.com
616
by
nutellalover
19h ago
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Article:
28 min
This article provides a step-by-step guide on building a functional coding agent using Python and an LLM (Language Model) like OpenAI's Claude. The core of the tool is composed of three main functions: reading files, listing files, and editing files. These functions are implemented to facilitate interactions with the LLM for creating, navigating, and modifying code.
This article could inspire developers to explore AI-assisted coding tools, potentially leading to more efficient code generation and collaboration in the tech industry.
- Three main functions for file operations
- Detailed tool function documentation
- Dynamic tool registry for LLM interaction
Discussion (197):
40 min
The discussion revolves around the complexity and capabilities of coding agents, particularly focusing on tools like Claude Code. Participants debate the necessity of advanced features versus simpler alternatives, discuss technical aspects such as TODO lists and context management, and highlight trends in AI-driven development tools. There is a notable level of agreement among participants but also some intensity in debates about privacy concerns and the role of human oversight.
- Coding agents are complex systems that require a combination of LLMs, tooling, and planning.
- There is ongoing debate about the extent to which these systems can be simplified or made more accessible.
Counterarguments:
- Some argue that the complexity of coding agents is necessary to achieve high performance.
- Others suggest that simpler tools or approaches could be sufficient.
Programming
Python Development, AI Integration, Code Generation
Hacking a Casio F-91W digital watch (2023)
from medium.com
149
by
jollyjerry
4d ago
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Article:
47 min
The article describes a unique project where the author hacks a Casio F-91W digital watch to add NFC contactless payment capability, providing an in-depth analysis of the technology involved, tools used, disassembly process, and custom design for the antenna.
- Explains the workings of NFC technology and its components in contactless payment cards.
- Describes the use of specific tools like NanoVNA, Proxmark3, and RFID-RC522 for analysis and modification.
- Details the disassembly process to access the card's chip and antenna.
- Outlines a custom design approach using 3D printing for an NFC antenna that fits inside the watch.
Quality:
The article provides detailed, step-by-step instructions and technical insights without promoting illegal activities.
Discussion (42):
The thread discusses an article with mixed opinions on its writing style and subject matter, while also highlighting a project related to modifying watches.
- The writing style was distracting
- The subject matter is interesting
Hardware
Computer Hardware, Electronics