Archive
391 notes, newest first.
2026
- Apr 21加布里埃尔·福雷9 min read
- Apr 19无调性音乐27 min read
- Apr 19Nash Equilibrium3 min read
- Apr 102026 蛤蟆先生去看心理医生50 min read
- Apr 102026 Why Information Grows38 min read
- Apr 3pc_sets_with_same_interval_vectors4 min read
- Mar 1602 循环群 对称群 置换群47 min read
- Mar 131 矩阵与线性方程组34 min read
- Mar 9和声知识整理55 min read
- Mar 9日语的常用语5 min read
- Mar 6作曲方法6 min read
- Feb 2700 什么是概率3 min read
- Feb 2501 Information Entropy44 min read
- Feb 25调性和声原理2 - 调式.md12 min read
- Feb 2401 Information Entropy 248 min read
- Feb 2405 Channel Capacity33 min read
- Feb 232024 罗伯特·弗罗斯特 - 未选择的路3 min read
- Feb 232025 海上钢琴师3 min read
- Feb 232026 Bart Howard - Fly Me to the Moon1 min read
- Feb 11日语词源41 min read
- Feb 11あしたはトゥモロー1 min read
- Feb 11ツギハギスタッカート1 min read
- Feb 92024 夏目漱石 - 草枕 - 摘录31 min read
- Jan 292026 村上春树 - 1Q8491 min read
- Jan 29控制论3 min read
- Jan 29增长的本质11 min read
- Jan 2701 Probabilistic Systems7 min read
- Jan 2501 ZFC Axioms36 min read
- Jan 24Zorn's Lemma11 min read
- Jan 2301 实数系28 min read
- Jan 2302 极限与连续32 min read
- Jan 2303 微分19 min read
- Jan 1101 λ-calculus的语法10 min read
- Jan 1102 λ-calculus与可计算性15 min read
- Jan 1103 λ-calculus的归约13 min read
- Jan 1002 一般的概率空间38 min read
2025
- Dec 31bliss1 min read
- Dec 24Zzz4 min read
- Dec 24ツギハギスタッカート5 min read
- Dec 24ボクらの冒険4 min read
- Dec 2002 Machine-Level Representation of Programs8 min read
- Dec 1700 What is Information26 min read
- Dec 1701 Information Entropy66 min read
- Dec 1601 Representing and Manipulating Information11 min read
- Dec 12变分法20 min read
- Dec 12最小作用量原理4 min read
- Dec 1102 Application Layer11 min read
- Dec 112024 生命3.078 min read
- Dec 11科学的世界观87 min read
- Dec 11模拟游戏假说10 min read
- Dec 5Dies irae 震怒之日5 min read
- Nov 2803 形式化证明25 min read
- Nov 2502 一阶逻辑45 min read
- Nov 24Itô Calculus22 min read
- Nov 2301 命题逻辑34 min read
- Nov 23语言哲学63 min read
- Nov 2202 Asymptotic Equipartition Property15 min read
- Nov 2204 Information Compression46 min read
- Nov 2206 Differential Entropy16 min read
- Nov 2207 Gaussian Channel12 min read
- Nov 152022 萨特 - 恶心 - 摘录17 min read
- Nov 152025 茨威格 - 人类群星闪耀时1 min read
- Nov 152025 经济学的思维方式19 min read
- Nov 152025 卡尼曼 - 思考，快与慢72 min read
- Nov 152025 普鲁斯特 - 追忆似水年华2 min read
- Nov 152025 萨特 - 存在主义是一种人道主义18 min read
- Nov 8后缀自动机34 min read
- Nov 8Concentration不等式16 min read
- Nov 8Multi-Armed Bandit20 min read
- Nov 8Streaming Model15 min read
- Nov 7日语的语气2 min read
- Nov 7KMP & AC自动机13 min read
- Nov 501 范畴4 min read
- Oct 2900 How does Japanese Work14 min read
- Oct 282024 王浩 - 从数学到哲学20 min read
- Oct 282025 Legal High4 min read
- Oct 2201 Supervised Learning42 min read
- Oct 22监督学习46 min read
- Oct 2100 What is Machine Learning13 min read
- Oct 2104 哥德尔完备性定理49 min read
- Oct 2105 一阶逻辑的表达能力74 min read
- Oct 2106 哥德尔不完全性定理107 min read
- Oct 21神っぽいな8 min read
- Oct 18letter song4 min read
- Oct 1402 Syntactic Analysis14 min read
- Oct 1403 Program Semantics23 min read
- Oct 1404 Hoare Logic1 min read
- Oct 142025 How to Do What You Love32 min read
- Oct 14Sorting3 min read
- Oct 52010 曹操 - 短歌行1 min read
- Oct 52014 杨慎 - 临江仙1 min read
- Oct 52017 刘禹锡 - 陋室铭1 min read
- Oct 52017 鲁迅 - 故乡29 min read
- Oct 52017 普希金 - 假如生活欺骗了你1 min read
- Oct 52018 杜甫 - 茅屋为秋风所破歌2 min read
- Oct 52018 范仲淹 - 岳阳楼记3 min read
- Oct 52018 柳宗元 - 小石潭记2 min read
- Oct 52018 欧阳修 - 醉翁亭记3 min read
- Oct 52018 陶渊明 - 桃花源记3 min read
- Oct 52019 白居易 - 琵琶行6 min read
- Oct 52019 杜牧 - 阿房宫赋4 min read
- Oct 52019 李白 - 梦游天姥吟留别2 min read
- Oct 52019 林徽因 - 你是人间的四月天2 min read
- Oct 52019 柳宗元 - 始得西山宴游记3 min read
- Oct 52019 宋濂 - 送东阳马生序4 min read
- Oct 52019 苏轼 - 赤壁赋4 min read
- Oct 52019 张若虚 - 春江花月夜2 min read
- Oct 52019 诸葛亮 - 出师表5 min read
- Oct 52020 归有光 - 项脊轩志5 min read
- Oct 52020 海因里希·伯尔 - 在桥边9 min read
- Oct 52020 李白 - 蜀道难2 min read
- Oct 52020 李密 - 陈情表4 min read
- Oct 52020 李商隐 - 锦瑟1 min read
- Oct 52020 刘禹锡 - 酬乐天扬州初逢席上见赠1 min read
- Oct 52020 罗曼·罗兰 - 约翰·克里斯朵夫9 min read
- Oct 52020 诗经·秦风 - 蒹葭1 min read
- Oct 52020 诗经·卫风 - 氓2 min read
- Oct 52020 司马迁 - 报任安书15 min read
- Oct 52020 王勃 - 滕王阁序6 min read
- Oct 52020 王羲之 - 兰亭集序3 min read
- Oct 52020 文天祥 - 指南录后序7 min read
- Oct 52020 庄子 - 逍遥游5 min read
- Oct 52021 屈原 - 渔父2 min read
- Oct 52021 诗经·周南 - 关雎1 min read
- Oct 52021 苏轼 - 蝶恋花·春景1 min read
- Oct 52022 荷尔德林 - 人，诗意的栖居1 min read
- Oct 52022 诗经·小雅 - 采薇2 min read
- Oct 52022 温庭筠 - 菩萨蛮1 min read
- Oct 52023 木心 - 从前慢1 min read
- Oct 52023 徐志摩 - 雪花的快乐2 min read
- Oct 52024 李商隐 - 无题1 min read
- Oct 52024 秦观 - 鹊桥仙1 min read
- Oct 52024 苏轼 - 水调歌头1 min read
- Oct 52025 曹植 - 洛神赋7 min read
- Oct 52025 李白 - 将进酒2 min read
- Oct 52025 李白 - 清平乐1 min read
- Oct 52025 李白 - 侠客行1 min read
- Oct 52025 李白 - 宣州谢朓楼饯别校书叔云1 min read
- Oct 52025 刘邦 - 大风歌1 min read
- Oct 52025 项羽 - 垓下歌1 min read
- Oct 5勇者5 min read
- Oct 4世界が終わるまでは3 min read
- Oct 32017 杨绛 - 老王11 min read
- Oct 32019 屈原 - 离骚17 min read
- Oct 32021 黑塞 - 德米安22 min read
- Oct 32022 存在主义咖啡馆——自由、存在和杏子鸡尾酒105 min read
- Oct 32022 尼采 - 查拉图斯特拉如是说 - 摘录24 min read
- Oct 32023 史铁生 - 我与地坛79 min read
- Oct 32024 爱因斯坦 - 探索的动机21 min read
- Oct 3笔记1 min read
- Oct 3海阔天空5 min read
- Oct 3傻女5 min read
- Oct 1音读和训读1 min read
- Sep 3001 概率振幅45 min read
- Sep 292023 米兰·昆德拉 - 不能承受的生命之轻 - 摘录19 min read
- Sep 22马勒-第二交响曲2 min read
- Sep 22Context Engineering36 min read
- Sep 21贝多芬-第九小提琴奏鸣曲4 min read
- Sep 21勃拉姆斯-第一小提琴奏鸣曲3 min read
- Sep 21柴可夫斯基-第六交响曲6 min read
- Sep 21柴可夫斯基-第一交响曲3 min read
- Sep 21李斯特-B小调钢琴奏鸣曲5 min read
- Sep 21普罗科菲耶夫-第七钢琴奏鸣曲4 min read
- Sep 21Interpretability9 min read
- Sep 10调性和声原理3 - 和声进行15 min read
- Sep 10和声的功能9 min read
- Sep 6Get Over5 min read
- Aug 3104 大数定律63 min read
- Aug 2901 测度41 min read
- Aug 2802 勒贝格积分40 min read
- Aug 2803 连续随机变量19 min read
- Aug 2804 大数定律27 min read
- Aug 25韦达定理3 min read
- Aug 2400 什么是代数11 min read
- Aug 2401 群68 min read
- Aug 2301 小球装箱问题与组合证明15 min read
- Aug 21Best of All - Classic1 min read
- Aug 1814 傅里叶级数48 min read
- Aug 1701 Bellman Equation24 min read
- Aug 1702 Monte-Carlo Learning18 min read
- Aug 1703 Temporal-Difference Learning33 min read
- Aug 172022 scratch4 min read
- Aug 17君が好きだと叫びたい4 min read
- Aug 17夜色3 min read
- Aug 17銀の龍の背に乗って（TODO）3 min read
- Aug 17英音与美音1 min read
- Aug 17Lemon5 min read
- Aug 17すずめ3 min read
- Aug 1603 Entropy Rate14 min read
- Aug 1505 莫比乌斯反演54 min read
- Aug 1402 容斥原理19 min read
- Aug 112025 陈嘉映 - 何为良好生活28 min read
- Aug 112025 东京爱情故事2 min read
- Aug 112025 菲兹杰拉德 - 了不起的盖茨比23 min read
- Aug 112025 科普兰 - 怎样欣赏音乐12 min read
- Aug 112025 维特根斯坦传47 min read
- Aug 112025 语言·意义·世界11 min read
- Aug 11萨义德 - 音乐的极境6 min read
- Aug 11音乐评论摘记25 min read
- Aug 902 一般的概率空间38 min read
- Aug 601 离散概率36 min read
- Aug 601 离散概率36 min read
- Aug 6离散概率在组合中的使用42 min read
- Aug 6一般的概率空间old16 min read
- Aug 202 时间复杂性23 min read
- Aug 203 认证加密23 min read
- Aug 2文法汇总15 min read
- Aug 2狭义相对论 The Special Theory of Relativity82 min read
- Aug 1狭义相对论old49 min read
- Jul 1401 命题逻辑34 min read
- Jul 14前言17 min read
- Jul 12二十世纪音乐29 min read
- Jul 7调性和声原理4 - 其他3 min read
- Jul 6调性和声原理1 - 音阶 音程 和弦26 min read
- Jun 292022 非理性的人39 min read
- Jun 292022 尼采 - 悲剧的诞生8 min read
- Jun 292023 村上春树 - 挪威的森林 - 摘录6 min read
- Jun 292023 弗洛伊德 - 精神分析引论22 min read
- Jun 292023 侯世达 - GEB47 min read
- Jun 292023 萨特 - 存在与虚无4 min read
- Jun 29我从头开始思考11 min read
- Jun 232025 心流：最优体验心理学60 min read
- Jun 232025 How I Met Your Mother8 min read
- Jun 23浪漫主义音乐2 min read
- Jun 14集合的势7 min read
- Jun 1003 紧性与连通性1 min read
- Jun 1005 拓扑群5 min read
- Jun 904 商拓扑16 min read
- Jun 9拓扑不变量5 min read
- Jun 802 连续性37 min read
- Jun 4存在主义95 min read
- May 3101 拓扑空间36 min read
- May 3003 连续随机变量19 min read
- May 30Concentration不等式16 min read
- May 2502 一阶逻辑：语法与语义51 min read
- May 1602 全同粒子25 min read
- May 1603 自旋16 min read
- May 42024+ 诺顿音乐断代史24 min read
- May 42025 霍金 - 时间简史21 min read
- May 4什么是幸福66 min read
- May 2费曼积分法4 min read
- Apr 252025 刘慈欣 - 球状闪电31 min read
- Apr 212024 ACM 超越6 min read
- Apr 192025 米兰·昆德拉 - 生活在别处17 min read
- Apr 192025 夏目漱石 - 心 - 摘录19 min read
- Apr 52025 From Zero To One2 min read
- Mar 17Deterministic Finite Automaton9 min read
- Mar 17Notes - Andrej Karpathy - Deep dive into LLMs like ChatGPT41 min read
- Mar 1310 多元函数微分学79 min read
- Mar 6一阶微分方程6 min read
- Feb 2703 一阶逻辑：完备性69 min read
- Feb 2704 一阶逻辑：表达能力6 min read
- Feb 24随机向量7 min read
- Feb 23Model Checking3 min read
- Feb 19Schröder-Bernstein Theorem9 min read
- Feb 17Transformer20 min read
- Feb 14Currying1 min read
- Feb 102025 徐志摩 - 再别康桥2 min read
- Feb 3Church Numerals2 min read
- Feb 22 线性空间28 min read
- Feb 23 矩阵的秩24 min read
- Jan 1303 Transport Layer21 min read
- Jan 1305 Link Layer30 min read
- Jan 1204 Network Layer27 min read
- Jan 1001 私钥加密58 min read
- Jan 1002 消息认证码28 min read
- Jan 908 多方安全计算13 min read
- Jan 801 Computer Networks Introduction11 min read
- Jan 705 私钥密码学假设19 min read
- Jan 504 哈希函数22 min read
- Jan 407 数字签名8 min read
- Jan 106 公钥加密32 min read
2024
- Dec 31secretary分析35 min read
- Dec 3001 图灵机模型27 min read
- Dec 3004 问题的难度31 min read
- Dec 3005 多项式谱系17 min read
- Dec 2907 概率图灵机25 min read
- Dec 2908 计数复杂性17 min read
- Dec 28无理数的无理数次方可能是有理数2 min read
- Dec 2706 电路复杂性30 min read
- Dec 20notes10 min read
- Dec 1703 空间复杂性8 min read
- Dec 1703 Cache问题14 min read
- Dec 1704 k-server问题23 min read
- Dec 17在线二分图匹配14 min read
- Dec 1406 Martingale39 min read
- Dec 504 拉格朗日对偶 Lagrange Duality11 min read
- Nov 9三次方程的求解4 min read
- Nov 5斐波那契前后两项的比3 min read
- Oct 26证明正多面体只有五个3 min read
- Oct 23条件期望2 min read
- Oct 2204 正交性26 min read
- Oct 2207 离散概率 original54 min read
- Oct 2209 奇异值分解(SVD)30 min read
- Oct 2008 环48 min read
- Oct 1702 线搜索问题6 min read
- Oct 1300 牛顿力学 Newtonian Mechanics1 min read
- Oct 1303 支持向量机20 min read
- Oct 1305 非监督学习13 min read
- Oct 1306 有限群的结构27 min read
- Oct 1312 曲线积分与曲面积分40 min read
- Oct 132024 The PhD Grind5 min read
- Oct 13钢琴演奏技术4 min read
- Oct 13近似算法18 min read
- Oct 13平衡树31 min read
- Oct 13Smoothed Analysis on Simplex37 min read
- Oct 1201 滑雪板租赁问题16 min read
- Sep 1604 微分中值定理23 min read
- Aug 30一阶逻辑的语法与语义25 min read
- Aug 27英语词根1 min read
- Aug 1005 波 Waves9 min read
- Jul 192024 黑塞 - 精神与爱欲 - 摘录55 min read
- Jun 1209 整环44 min read
- Jun 1210 域51 min read
- Jun 1105 群在集合上的作用26 min read
- Jun 1107 群的直积36 min read
- Jun 1003 陪集与正规子群20 min read
- Jun 1004 群的同态与同构26 min read
- Jun 901 Concurrency11 min read
- Jun 402 Virtualization30 min read
- May 20神经网络26 min read
- May 1802 正则化5 min read
- May 17Zorn's Lemma11 min read
- May 132024 黑塞 - 盖特露德 - 摘录24 min read
- Apr 11哥德尔不完全性定理36 min read
- Feb 8日语的敬语1 min read
- Feb 4语法整理-初级5 min read
- Feb 215 Fourier变换12 min read
- Jan 2905 中心极限定理17 min read
- Jan 801 凸优化 Convex Optimization16 min read
- Jan 701 Lexical Analysis20 min read
- Jan 4随机变量old34 min read
- Jan 305 镜像下降法 Mirror Descent11 min read
- Jan 103 有约束凸优化问题 Constrained Convex Optimization29 min read
2023
- Dec 3102 无约束凸优化问题 Unconstrained Convex Optimization28 min read
- Dec 26哥德尔完备性定理23 min read
- Nov 1310 静磁学 Magnetostatics19 min read
- Nov 1311 麦克斯韦方程组 The Maxwell Equations9 min read
- Oct 30日语的变形规则4 min read
- Oct 22tutu（TODO）5 min read
- Oct 1009 静电学 Electrostatic40 min read
- Sep 27数据类型5 min read
- Aug 1908 电磁辐射 Radiation22 min read
- Aug 1007 几何光学 Geometrical Optics25 min read
- Aug 704 热力学 Thermodynamics41 min read
- Aug 7LOSER（TODO）7 min read
- Jul 24彼女は旅に出る（TODO）1 min read
- Jul 9HTML语言4 min read
- Jul 5日语的细节1 min read
- Jun 302022 爱的艺术11 min read
- Jun 1605 Greedy26 min read
- Jun 1607 Linear Programming57 min read
- Jun 1500 Time Complexity7 min read
- Jun 1501 Algorithms with Numbers28 min read
- Jun 1502 Divide-and-Conquer17 min read
- Jun 1503 Graphs - Connectivity23 min read
- Jun 1504 Graphs - Shortest Paths28 min read
- Jun 15NP完全问题28 min read
- Jun 1402 振动 Vibration dynamics38 min read
- Jun 1403 统计力学 Statistical Mechanics76 min read
- Jun 11场论的基本内容与应用37 min read
- Jun 8Spectral Graph Theory58 min read
- Jun 509 多元函数的极限与连续44 min read
- Jun 511 重积分42 min read
- Jun 513 函数项级数39 min read
- May 27Entropy Method31 min read
- May 26Probability Method27 min read
- May 2208 数项级数48 min read
- May 22Lovász Local Lemma30 min read
- May 17Second-moment Method19 min read
- Apr 2306 Dynamic Programming1 min read
- Apr 1704 偏序集33 min read
- Apr 1201 转动动力学 Rotational Dynamics50 min read
- Apr 803 生成函数26 min read
- Apr 2类 Class11 min read
- Apr 2运算符重载 Operator Overloading7 min read
- Mar 805 行列式22 min read
- Jan 272022 李泽厚 - 美学19 min read
- Jan 906 特征值与特征向量47 min read
- Jan 907 线性映射21 min read
- Jan 4模板 Template2 min read