标签:sum 组合 mat lin limit row math class its
组合恒等式:
\(\sum\limits_{i=0}^n(-1)^i{n\choose i}=[n=0]\)
二项式反演:
\(f(n)=\sum\limits_{i=0}^n{n\choose i}g(i)\Leftrightarrow g(n)=\sum\limits_{i=0}^n(-1)^{n-i}{n\choose i}f(i)\)
标签:sum 组合 mat lin limit row math class its
原文地址:https://www.cnblogs.com/cjoierShiina-Mashiro/p/11625711.html