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We de ne a complex R=J of graded modules on a d-dimensional simplicial complex , so that the top homology module of this complex consists of piecewise polynomial functions (splines) of smoothness r(More)
Algebra Primer A.1 Groups Let G be a set of elements endowed with a binary operation G×G −→ G. We will write · for this operation. By definition, G is closed under the operation. G is a group if: 1.(More)