char (*)[n]: Pointing to an Entire Array in C

How is the sum of squares formula derived?

A Tour Inside the Oriental Pearl Tower at Shanghai, China - Summer 2026 Vacation

Introduction to Randomized Algorithms: Randomized 3-SAT, Randomized Sorting, Randomized Selection

Introduction to Matrix Calculus: Derivative of a Scalar-Valued Function with Respect to a Matrix

AllGather Bruck Algorithm (8 nodes, 1 port, 32 MiB total data)

AllGather Swing Algorithm (8 nodes, 1 port, 32 MiB total data)

AllGather Pairwise Recursive Doubling (8 nodes, 1 port, 32MiB total data)

AllGather Cyclic Recursive Doubling (8 nodes, 1 port, 32MiB total data)

Father (父亲) – Chopstick Brothers | Chinese & English Lyrics

Proving Integer Programming is NP-Complete | Reduction from 3-SAT

Understanding %rax and XMM Registers in x86-64 printf Calls

Happy Chinese New Year of the Horse!

Happy Valentine’s Day!

Proving any Linear Transformation can be represented by a Matrix

A Complete Proof of the Singular Value Decomposition

Geometric Proof of the Cauchy-Schwarz Inequality

Did you know that there exists a bijection from [0,1] to (0,1)?

Proving the Subset Sum Problem is NP-Complete | 3-SAT to Subset Sum Reduction

A Demo of Manim Animations Beyond CS/Math

Linear Regression Analysis of Socioeconomic Factors and Crime Rates

Understanding the Binomial Expansion

Proof of Fermat’s Little Theorem and a Note of its Generalization

Solving Summations Cleverly: Finite Geometric Series and Finite Arithmetic-Geometric Series

Proof by Contradiction: Galileo’s Law of Free Fall and Proving √3 is Irrational

x86-64 Assembly Programming: Global Variables and Conditional Set/Move Instructions

Network Flow: Max Flow Problem, Ford-Fulkerson Algorithm, max-flow min-cut theorem

x86-64 Assembly Arithmetic and Bitwise Operations Explained

Explanation of Basic x86-64 Assembly Programming Techniques

Binary Search Trees Explained: Search, Insertion, Deletion

Graphs Explained: Undirected and directed graphs, Euler and Hamiltonian paths, handshaking theorem

Tree Data Structure: Binary trees, expression trees, in-order, pre-order, post-order traversals

Introduction to Data Structures and Algorithms

Greedy Algorithms: Proof of Correctness for Kruskal’s Algorithm

Merge Sort in x86-64 Assembly language

Dynamic Programming: The Knapsack Problem, DP table, implementation in Python

Bipartite Matching. Is there a perfect matching?

Proving the Vertex Cover Problem is NP-Complete | 3-SAT to Vertex Cover Reduction

The SAT Problem: First problem proven to be NP-Complete

Divide and Conquer Algorithms Introduction

Introduction to NP-Complete Problems

What is a B-tree? Properties, Insertion, Deletion.

Red-Black Tree | Properties, Insertion, Deletion, Elementary Operations.

Heap Sort Explained | Pseudocode and Example

Quicksort Explained | Pseudocode and Example

Merge Sort Explained | Pseudocode and Example

Radix Sort Explained | Pseudocode and Example

Counting Sort Explained | Pseudocode and Example

What is the Gaussian Integral?

What is 1 + cos t + cos 2t + … + cos Nt equal to?

Induction and Invariants | Definitions and Examples

Big O Notation, Big Omega Notation, and Big Theta Notation | Definitions and Examples

3D Parametric Heart 💗| Happy Valentine’s Day!

Dijkstra’s Algorithm Explained | Pseudocode and Example

Heap Data Structure | Definition and Example

Deque (Double-ended queue) Data Structure | Definition and Example

Queue Data Structure | Definition and Example

Stack Data Structure | Definition and Example

Linked List Data Structure | Definition and Example

Kruskal’s Algorithm Explained | Pseudocode and Example