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Re:Ask HN: Projects that don't make you money but you're doi... by jimhefferon on Thursday August 10, 2017 @05:03PM (#14984251)
I write math texts that are Free. It is my creative outlet. My Linear Algebra (http://joshua.smcvt.edu/linearalgebra) has gotten some traction (and I get a small amount of money from Amazon). I also have an Introduction to Proofs: an Inquiry-Based Approach (http://joshua.smcvt.edu/proofs) that I find helps my students, but is in quite a niche area. And I'm working on a Theory of Computation.

If I didn't have some creative work I would be much less happy.

Re:Ask HN: Projects that don't make you money but you're doi... by Buttons840 on Thursday August 10, 2017 @11:56PM (#14986486)
Didn't expect to see you on HN. I also read your book for self study (not for a class) and really appreciated all the exercises with solutions. Thank you.
Re:Ask HN: Projects that don't make you money but you're doi... by cthulhu0 on Thursday August 10, 2017 @09:24PM (#14985929)
I'm sure I read your linear algebra book in my undergrad to help me get a grasp on it. I probably still have it on my computer. Thanks for all your work.
Re:Ask HN: Projects that don't make you money but you're doi... by ciro_langone on Thursday August 10, 2017 @05:17PM (#14984377)
This is awesome! You should keep up with this - maybe develop a curriculum and host it all in one place one day?