What do Mount St. Helens and the rank of a matrix have in common? The answer is the MATLAB functionpeaks。让我解释。请忍受我 - 这是一个长篇小说。read more >>

The rank of a linear transformation is a fundamental concept in linear algebra and matrix factorizations are fundamental concepts in numerical linear algebra. Gil Strang's2020 Vision of Linear Algebra试图在介绍性线性代数课程中引入这些概念。read more >>

My post a few days ago,Gil Strang and the CR Matrix Factorization, generated a lot of email. Here is the resulting follow-up to that post....read more >>

My friend Gil Strang is known for his lectures from MIT course 18.06, Linear Algebra, which are available on MITOpenCourseWare。He is now describing a new approach to the subject with a series of videos,2020年线性代数的视野。This vision is featured in a new book,Linear Algebra for Everyone...read more >>

Recently, I had email from a student in Italy....read more >>

While I was working on my posts aboutPejorative Manifolds, I was pleased to discover the intriguing patterns created by the roundoff error in the computed eigenvalues of triple Kronecker products....read more >>

My colleagues are looking for a matrix to be used in a new benchmark. They've come to the right place....read more >>

QR算法是世界上最成功的算法之一。我们可以使用动画GIF来说明该算法的三种变体，一种用于计算非对称...的特征值...read more >>

我刚从ICIAM2019 conference在西班牙瓦伦西亚。这是一次巨大的会议 - 4,000多个与会者，数十名奖金和邀请的演讲，数百个平行的迷你游戏。我在由尼克·海姆（Nick Higham）和罗布·科尔斯（Rob Corless）组织的两部分小型葡萄酒中发表了演讲。我概述了演讲的第一部分this bloga month ago. This post outlines the second part, which was about Hadamard matrices. Some of it is taken from a post inthis blogfive years ago....read more >>