This paper is a study of several problems of best approximation to a given function in a normed linear space from a convex subset of a finite-dimensional subspace. Specific problems treated are ...

Reduced rank approximation of matrices has hitherto been possible only by unweighted least squares. This paper presents iterative techniques for obtaining such approximations when weights are ...

Pi Approximation Day 2025: Pi is a special number in mathematics. It shows the relationship between a circle’s circumference (the distance around the circle) and its diameter (the distance across the ...

Around 250 B.C., the Greek mathematician Archimedes calculated the ratio of a circle's circumference to its diameter. A precise determination of pi, as we know this ratio today, had long been of ...

Can long-standing methods in circuit analysis be in need of some refinement? When it comes to circuit dynamics, many engineers are quick to invoke their computer circuit simulation programs and let ...

The questions in this quiz are suitable for GCSE maths students studying approximation, rounding to decimal places, rounding to significant figures, truncation, estimating calculations, limits of ...

Every year on 22 July, math lovers around the world take a moment to celebrate something special—Pi Approximation Day. This day is dedicated to the mathematical constant π (pi), one of the most ...