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Given a set of vectors $ V = \{ \mathbf{v}_1, \ldots, \mathbf{v}_n \} \subset \mathbb{R}^d$ , I want to project a point $ \mathbf{x}_0 \in \mathbb{R}^d$ onto the convex hull $ \text{conv}(V)$ of the vectors in $ V$ . I know this is a quadratic program, to find $ \mathbf{z}^*$ that minimizes $ \frac{1}{2}\|\mathbf{x}_0 –Read more

My friend just booked some tickets for a mini cruise from Hull, UK to Rotterdam, Netherlands. He used the short version of my name on the booking ‘Sam’ instead of my real name ‘Samuel’ which is on my passport. Will the booking need to be amended to match my passport? Had a quick look onRead more

This was an interesting point brought up on the Facebook group wherein Alan Bahr was invoked to rule upon it. By the book, weapons capable of doing Hull damage will simply obliterate anything they go up against that doesn’t have Hull Points (something generally restricted to spaceships). However, some armor has at least 1 HullRead more

Let $ (X,d)$ be a Cat(0) space of dimension 2. Following the notation of “Metric spaces of non-positive curvature” by Bridson and Haefliger, I define: a geodesic triangle $ \Delta\subset X$ consists of three points $ p,q,r\in X$ , its vertices, and a choice of three geodesic segments joining them, its sides. A subset $Read more