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seen May 7 '13 at 20:10

Nov
2
revised Transformation of the tetrahedron - translations, rotations
Inserted image.
Oct
20
revised How to solve the differential equation $u_k(z)=-2\cfrac{\partial}{\partial z }(\cfrac{u_{k+1}(z)}{z})$?
deleted 9 characters in body
Oct
14
revised Find a real-valued function of 2 variables satisfying certain positivity constraints
deleted 110 characters in body
Oct
12
revised Find a real-valued function of 2 variables satisfying certain positivity constraints
added 694 characters in body
Oct
8
revised interpreting the power of adjacency matrix
Rephrased more clearly.