Posts
JupyterLab
JupyterLab is a modern, web-based interactive development environment for Python and other languages. It combines notebooks, terminals, file management, and interactive tools into one unified workspace.
Python Setup
To do symbolic calculation safely and high-quality numerical work, the most practical stack is:
Frequently Used Terminal Commands
macOS is built on Unix, which means powerful terminal commands are available for file management, networking, system monitoring, and development tasks.
pyenv
Pyenv is an essential tool for Python developers, especially when working on multiple projects that require different Python versions. It allows you to easily switch between versions and maintain project-specific environments without affecting your system Python. Some key benefits of using pyenv include:
- Manage multiple Python versions (3.8, 3.9, 3.10, 3.11 etc.)
- Maintain project-specific environments
- Avoid breaking system Python
- Ensure team-wide version consistency
Homebrew (brew)
Homebrew (brew) is the most popular package manager for macOS. It simplifies the installation, update, and management of software directly from the terminal. Instead of manually downloading .pkg or .dmg files, developers can install tools using a single command.
Linus Torvalds on AI, GPUs, and Kernel Development
Let’s take a look at Linus Torvalds’ thoughts on the hardware industry shift from CPUs toward GPUs and AI-driven accelerators, what that means for kernel development, and whether AI tools might ever replace real maintainers.
Tongue Twister Challenge Collection
Tongue twisters are powerful tools for improving pronunciation, clarity, confidence, and verbal agility. They are used by actors, teachers, news readers, debaters, podcasters, and language learners across the world. When sounds repeat rapidly, your brain and mouth must coordinate precisely. At first it feels messy. Then it becomes magic.
Complete India Post Route from Booking to Delivery
This is a real operational case study of how a Business Parcel moved across the India Post logistics network from origin to doorstep.
How to Predict Parcel Arrival with India Post Tracking
A parcel moving through the postal network follows structured procedures defined by departmental manuals, transport availability, and accountability rules. When you learn how scanning logic, routing hierarchy, and bag closures work, prediction becomes practical rather than emotional.
Gemini API and How to Use It
Artificial intelligence becomes truly powerful when it moves from a chat window into automation. Instead of manually asking questions, we can build programs that send thousands of requests, generate reports, prepare lecture notes, summarize books, or build datasets while we sleep. The bridge between an idea and such automation is the API key. Understanding how this key works, how it is protected, and how it is used inside real code is the first major step toward becoming an effective AI engineer.
Gemini Models: Pro, Flash, and Flash Lite
Modern releases differ in reasoning depth, speed, and operational price, and these dimensions determine whether a workflow remains experimental or becomes production grade.
Linear Algebra
Following is the detailed chapter-wise outline for the Linear Algebra book focused on physical applications.
Page Contents
Page Content Guide:
Vector Differentiation
Vector differentiation is the mathematical process of determining how vector quantities change with respect to a scalar variable, most commonly time or space, providing a precise language to describe motion, flow, and field variation in physics.
Hooke’s Law
Hooke’s Law is one of the foundational principles of classical mechanics and elasticity theory, describing the linear relationship between the force applied to an elastic body and the resulting deformation, provided the deformation remains within the elastic limit of the material. Formulated in the 17th century by the English scientist Robert Hooke, the law captures the essential behavior of springs, wires, rods, and a wide class of solid materials when subjected to small stresses. In its simplest and most widely used form, Hooke’s Law states that the restoring force developed in an elastic system is directly proportional to the displacement from its equilibrium position and acts in the opposite direction.
Scalar and Vector Products
Scalar (dot) and vector (cross) products are fundamental binary operations between vectors that yield, respectively, a scalar measuring directional alignment and a vector representing oriented area and rotational tendency, forming the mathematical backbone of geometry, mechanics, and field theory.
Vector Algebra
Vector Algebra is the mathematical framework that deals with quantities possessing both magnitude and direction and provides systematic rules for their representation, manipulation, and combination, forming the backbone of physical descriptions of space, motion, and fields.
Structure of Formal Salutation
The first and most crucial stage of any academic lecture or formal speech is the formal salutation. This is the point at which the speaker brings together the stage, the audience, and the occasion into a single coherent frame. A well-crafted salutation not only establishes the seriousness and tone of the speech but also creates a sense of discipline, attentiveness, and expectation among the listeners.
औपचारिक अभिवादन
किसी भी अकादमिक व्याख्यान या औपचारिक भाषण का पहला और सबसे महत्वपूर्ण चरण औपचारिक अभिवादन होता है। यह वह बिंदु है जहाँ वक्ता मंच, श्रोता और अवसर—तीनों को एक सूत्र में बाँधता है। सही ढंग से रचा गया अभिवादन न केवल भाषण की गंभीरता स्थापित करता है, बल्कि श्रोताओं में अनुशासन और अपेक्षा की भावना भी उत्पन्न करता है।
सेवानिवृत्ति भाषण: 2026
निम्नलिखित 31 जनवरी 2026 को इतिहास-कक्ष-1, एसकेएमयू दुमका में आयोजित डॉ. हस्मत अली और डॉ. संजय कुमार सिन्हा के सेवानिवृत्ति समारोह के दौरान प्रस्तुत किए गए सेवानिवृत्ति भाषणों के अंश हैं: