As an outgrowth of the previously-mentioned session at the Baltimore Joint Meetings on open textbooks, Albert Schueller has started a new blog, Open Mathbook, to offer “a place to promote, discuss, and develop free and open source mathematics texts.” There’s already a bunch of great posts there, including a trove of interesting developments from a range of people deeply involved with the free and open math text movement.
Ironically, while I haven’t had time to post here recently, I was honored to have Albert ask me for a contribution, and I have a new post over at OpenMathBook, based on the talk I gave at the JMM.
Soon I’ll follow up here with some exciting news we have regarding plans for a multivariable addition to Active Calculus.