Nathan Reed
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 Dec15 awarded Caucus Sep30 awarded Explainer Sep21 awarded Popular Question Aug3 comment How to numerically solve a complex equation? This is impossible to answer without being more specific. Numerical root-finding (which is what this is) is a huge topic. Jul10 accepted Maximum number of vertices in intersection of triangle with box Jul10 answered Maximum number of vertices in intersection of triangle with box Jul8 awarded Commentator Jul8 comment Maximum number of vertices in intersection of triangle with box @HaoYe That's a good point. Would you mind posting that as an answer? Jul8 comment Maximum number of vertices in intersection of triangle with box @HaoYe By "0 vertices" I just mean that the intersection could be empty. No, I don't mean original vertices of the triangle and box, I just mean the corners of the polygon created by intersecting them. Jul7 asked Maximum number of vertices in intersection of triangle with box Feb11 comment Intersection between a cylinder and an axis-aligned bounding box I think you could construct $P$ more simply as $P = 1 - \vec v \vec v^T$. The matrix $\vec v \vec v^T$ (the outer product of $\vec v$ with itself) maps a vector to its projection on $\vec v$, assuming that $\vec v$ is unit length. Then $1 - \vec v \vec v^T$ projects onto the plane perpendicular to $\vec v$. Jul18 awarded Yearling Jun30 comment Euler's formula for triangle mesh @BRabbit27 Fixed. Jun30 revised Euler's formula for triangle mesh typo in formula Jun21 answered Euler's formula for triangle mesh Jun21 awarded Editor Jun21 awarded Organizer Jun21 revised Euler's formula for triangle mesh math formatting, tags Jun21 suggested approved edit on Euler's formula for triangle mesh Apr4 comment Least square solution based on the pseudoinverse solved efficiently with singular value decomposition You can start by reading the Wikipedia article on SVD. Calculating the Moore-Penrose pseudoinverse is the first thing listed in the applications section.