Proof verification: Prove that a tree with n vertices has n-1 edges
Mar 20, 2015 · What you are fundamentally saying is that if you have a tree with n vertex and n-1 edges, you can obtain a tree with …Read more
linear algebra - Showing that $l_2$ norm is smaller than $l_1 ...
Nov 27, 2012 · You really have to specify your context here. What is x x? Ell-p p spaces can be considered in different settings (n n …
一个最大值大于1的概率密度函数的意义是什么？ - 知乎
Oct 27, 2014 · 题主应该是把 概率质量函数 （probability mass function）和 概率密度函数 （probability density function）搞混了。 概 …
1-1+1-1+1-1+1... 这个无穷数列的值是什么？如何证明？ - 知乎
知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见 …
Inverse of the sum of matrices - Mathematics Stack Exchange
May 24, 2015 · The technique is useful in computation, because if the values in A and B can be very different in size then calculating …
complex analysis - Contour integral for $x^3/(e^x-1)$? - Mathematics ...
What contour and integrand do we use to evaluate $$ \\int_0^\\infty \\frac{x^3}{e^x-1} dx $$ Or is this going to need some other …
Why is $1/i$ equal to $-i$? - Mathematics Stack Exchange
May 11, 2015 · Why is 1/i 1 / i $1/i$ equal to −i i $-i$? Ask Question Asked 11 years, 5 months ago Modified 1 year, 9 months ago …
Product of inverse matrices $ (AB)^{-1}$
I am unsure how to go about doing this inverse product problem: The question says to find the value of each matrix expression …
"Normalize" values to sum 1 but keeping their weights
40 10 I need to format these numbers so that they form the sum 1, but they should keep their "weight". In this specific case: 40 would …
Why Markov matrices always have 1 as an eigenvalue
Apr 4, 2013 · qp=q where p is prob state transition matrix this means Y = 1 as an eigen vector of P' which also means There is an …