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In 1996, I was about to finish being an undergraduate. What should I become as an adult? I could do real–world work and get rich, or I could be a mathematician and have fun — only where, what, how? At the time, there were no university posts for graduates, at least not in Berlin. In order to come to an end, I planned not to take part in any courses anymore,(More)
This paper establishes properties of discrete orthogonal projections on periodic spline spaces of order r, with knots that are equally spaced and of arbitrary multiplicity M ≤ r. The discrete orthogonal projection is expressed in terms of a quadrature rule formed by mapping a fixed J-point rule to each sub-interval. The results include stability with(More)
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