I'm one of the founders of DataNitro. We're working on integrating Excel with Python.
You can reach me at firstname.lastname@example.org.
10 Continuity of a function at an isolated point dec 27 '10
3 Does infinity and zero really exist? dec 29 '10
2 What are the ramifications of the fact that the first homotopy group can be non-commutative, whilst the higher homotopy groups can't be? mar 4 '11
2 Hermitian operators and commutators may 15 '11
1 Topic for a high school-level math elective? jan 8 '11