John Lindsay Orr

John Lindsay Orr

I am a senior software engineer at Google and before that I was a professor and Vice Chair in the Department of Mathematics at the University of Nebraska - Lincoln.

A native of Edinburgh, Scotland, I have lived in England, Canada, Nebraska, and California, and now the Scottish Borders. When I'm not writing software, I like to hike, skate, and read and talk Greek.

Research

My mathematical research is mostly in Operator Theory/Operator Algebras, with a focus on non-selfadjoint operator algebras such as nest algebras and triangular algebras. Click for abstracts of my mathematical publications.

Software

I am passionate about web-based educational software and I have developed a number of web-based educational software products, including Google's Course Builder, Maplesoft's MapleTA, and one of the first on-line textbooks. Click for details of these and other projects.

Teaching

I have taught over sixty university courses, ranging from freshman calculus to graduate research topics. See a full list of courses taught, together with related resources. Also, see my on-line Analysis course, Analysis WebNotes.

Presentations

Click for slides from selected presentations.

Resume

Follow the links for my resume, my academic CV, my Google Scholar listing, and my papers on arXiv. Take a look at a word cloud of my software dev skills.

Social

Reach me on social media through the following sites: