Andrey Rekalo

3,564 reputation

11828

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	3,564 reputation	bio	website		visits	member for	2 years, 9 months
11828 badges		location			seen	17 hours ago

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Dec 27	awarded	Nice Question
Dec 27	comment	Volumes of n-balls: what is so special about n=5? Yes, this is an analytic argument I referred to implicitly. I'd like to know if there is any geometry behind that.
Dec 27	comment	Volumes of n-balls: what is so special about n=5? Well, for an $n$-dimensional ball of radius $R$ we can consider the ratio $$\frac{V_n(R)}{R^n}.$$ This is a "dimensionless" quantity.
Dec 27	awarded	Student
Dec 27	asked	Volumes of n-balls: what is so special about n=5?
Dec 24	awarded	Enlightened
Dec 24	awarded	Nice Answer
Dec 23	revised	Spreading points in the unit interval to maximize the product of pairwise distances added 154 characters in body
Dec 23	revised	Spreading points in the unit interval to maximize the product of pairwise distances added 127 characters in body
Dec 23	answered	Spreading points in the unit interval to maximize the product of pairwise distances
Dec 23	answered	famous space curves in geometry history?
Dec 22	revised	How to check if transformation is affine? added 291 characters in body
Dec 22	answered	How to check if transformation is affine?
Dec 18	answered	Invariant Subspace Problem
Dec 17	awarded	Suffrage
Dec 17	revised	Geometric intuition for the Householder transformation added 802 characters in body
Dec 17	revised	Geometric intuition for the Householder transformation added 34 characters in body
Dec 17	answered	Geometric intuition for the Householder transformation
Dec 16	awarded	Enthusiast
Dec 14	comment	Constructing a Cantor-like set by subtracting closed intervals Alternatively, the measure of the set will not depend on whether you subtract closed or open intervals since the difference is a countable sequence of endpoints, i.e. a measure zero set.