The Eigenvalue Problem (A Refresher)

One of the most interesting functions in mathematical analysis and calculus is the exponential function, .
For one, this is the only non-trivial function that is it’s own derivative (the trivial function would be ). That is, it is the solution to this very simple differential equation:
, with initial conditions
(Reminder: You solve it [...]

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MathIM and Adium

July, last year, Sum 1 to N said the following:
Someone somewhere should make a Web 2.0-ish collaboration site where people can do math together. Maybe like an IM service meshed with LaTeX capabilities, but without the coding hassle. Point-and-click type stuff. And an ability to save the notes and do projects together. Oh, and some [...]

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