Archives

2026  61

July  14

Data Structure: Note

July 20, 2026 · 8 min · 1593 words · Updated July 21, 2026

Linear Algebra: Review and Exercises (To be continued)

July 12, 2026 · 5 min · 867 words

Meta AI: Segmentation Anything Model 3

July 8, 2026 · 1 min · 176 words

Adjoint Operator

July 5, 2026 · 2 min · 235 words

Laplace Theorem and Applications

July 5, 2026 · 1 min · 21 words

Mollifier and Approximation of Identity

July 5, 2026 · 1 min · 60 words

Qualifying Exam: Analysis and Differential Equations

July 5, 2026 · 6 min · 1209 words

Qualifying Exam: Analysis and Differential Equations

July 5, 2026 · 6 min · 1209 words

Siglip2 modeling_siglip2.py 完整实现解析 — 逐类逐变量逐行

July 5, 2026 · 22 min · 4474 words

Siglip2 损失函数详解 — Sigmoid Loss 如何评估图文对齐

July 5, 2026 · 7 min · 1425 words

Siglip2 测试文件源码分析 — 四文件解构

July 5, 2026 · 23 min · 4899 words

Siglip2: A Vision Language Model

July 5, 2026 · 0 min · 0 words

根子空间

July 5, 2026 · 1 min · 6 words

LLM & VLM

July 3, 2026 · 9 min · 1712 words

June  21

Prompting 控制流图 — AgentSession 消息处理全链路

June 30, 2026 · 12 min · 2433 words

Prompting 源码分析 — AgentSession 消息处理与排队系统

June 30, 2026 · 18 min · 3674 words

AgentSession 源码分析 — Pi Coding Agent 核心生命周期管理

June 27, 2026 · 13 min · 2583 words

Computer Networking — Chapter 1: Computer Networks and the Internet

June 27, 2026 · 5 min · 970 words

Computer Networking — Chapter 2: Application Layer

June 27, 2026 · 6 min · 1105 words

Computer Networking — Chapter 3: Transport Layer

June 27, 2026 · 6 min · 1235 words

Computer Networking — Chapter 4: The Network Layer: Data Plane

June 27, 2026 · 4 min · 832 words

Computer Networking — Chapter 5: The Network Layer: Control Plane

June 27, 2026 · 4 min · 799 words

Computer Networking — Chapter 6: The Link Layer and LANs

June 27, 2026 · 5 min · 965 words

Computer Networking — Chapter 7: Wireless and Mobile Networks

June 27, 2026 · 5 min · 865 words

Computer Networking — Chapter 8: Security in Computer Networks

June 27, 2026 · 4 min · 822 words

Computer Networking — Chapter 9: Multimedia Networking

June 27, 2026 · 4 min · 851 words

Pi Coding Agent 扩展系统源码分析

June 27, 2026 · 22 min · 4566 words

Game of Chess

June 25, 2026 · 2 min · 253 words

复

June 24, 2026 · 1 min · 2 words

Hash Table

June 20, 2026 · 1 min · 2 words

Manifold

June 3, 2026 · 1 min · 114 words

分析力学

June 3, 2026 · 1 min · 152 words

Sobolev 空间和弱导数

June 1, 2026 · 2 min · 292 words

Workshop

June 1, 2026 · 2 min · 237 words

调和函数与极值原理

June 1, 2026 · 1 min · 162 words

May  26

偏微分方程 习题 12

May 31, 2026 · 1 min · 34 words

分析力学 习题 10

May 31, 2026 · 1 min · 129 words

Pi Agent 包源码逐行解读 — agent-loop.ts & agent.ts

May 29, 2026 · 26 min · 5422 words

Pi-Architecture: Agent

May 29, 2026 · 13 min · 2577 words

分析力学 习题 9

May 28, 2026 · 3 min · 577 words

位势方程与 Green 公式

May 27, 2026 · 2 min · 274 words

复旦 2021 推免考试

May 21, 2026 · 1 min · 14 words

复旦 2022 推免考试

May 21, 2026 · 1 min · 45 words

Cayley-Hamilton 定理

May 19, 2026 · 1 min · 116 words

根子空间

May 19, 2026 · 1 min · 7 words

根子空间

May 19, 2026 · 1 min · 99 words

若干分解

May 19, 2026 · 1 min · 108 words

复旦 2023 推免考试

May 18, 2026 · 2 min · 295 words

Pin

May 17, 2026 · 1 min · 130 words

偏微分方程 习题 11

May 17, 2026 · 5 min · 1037 words

复旦 2024 推免考试

May 17, 2026 · 1 min · 174 words

Homework 1

May 16, 2026 · 1 min · 12 words

Homework 3

May 16, 2026 · 2 min · 399 words

Homework 3

May 16, 2026 · 1 min · 14 words

Homework 3

May 16, 2026 · 1 min · 123 words

偏微分方程 习题 10

May 16, 2026 · 3 min · 454 words

分析力学 习题 8

May 16, 2026 · 4 min · 752 words

数列极限

May 16, 2026 · 1 min · 3 words

无界区域的热传导方程

May 16, 2026 · 0 min · 0 words

About Me

May 15, 2026 · 1 min · 51 words

Hello World

May 15, 2026 · 1 min · 13 words

2025  2

August  1

PI05 模型架构与推理流程详解

August 4, 2025 · 25 min · 5206 words

July  1

ZImageControlNetPipeline 工作流详解

July 17, 2025 · 8 min · 1526 words