几年前，“数学之美”系列文章原刊载于谷歌黑板报，获得上百万次点击，并被热情的读者广为传播，得到高度评价。读者说，读了“数学之美”，才发现大学时学的数学知识，比如马尔科夫链、矩阵计算，甚至余弦函数原来都如此亲切，并且栩栩如生，才发现自然语言和信息处理这么有趣，才真正明白“数学是科学的皇后”这句名言。

今年，作者吴军博士几乎把所有的文章都重写了一遍，为的是能把高深的原理讲得更加通俗易懂，让非专业读者也能领略数学的魅力。经过改写和重构后，《数学之美》在整体和细节的度上控制得更好。希望读者通过具体的例子学到的是思考问题的方式，学会如何化繁为简，如何用数学去解决工程问题，如何跳出固有思维不断去思考创新。同时书中也留了很多问题给愿意钻研的人做进一步深入思考。-A few years ago,　the beauty of mathematics　series of articles published in Google blackboard newspaper, get millions of hits, and was widely spread enthusiastic readers and get high praise. Reader said, read　the beauty of mathematics , only to find that university learn mathematics knowledge, such as a markov chain, matrix calculation, even the cosine function are so kind, and lifelike, only to find that natural language and information processing so interesting, really understand the famous words　mathematics is the queen of science . This year, the author Dr Wu jun, almost all the articles to rewrite again, so that I can speaks more easy to understand the principle of integrating advanced, make the reader can appreciate the charm of mathematics. After rewriting and reconstruction,　the beauty of mathematics in the overall and details on the degree of control better. Want readers to think through concrete examples to learn is the way, learn how to change numerous for brief, how to