Truong

258 reputation

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visits	member for	1 year, 8 months
	seen	Apr 10 at 20:54
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A Ph.D. student in Electrical Engineering. My work involves Mathematics. And I love Mathematics.

	258 reputation	bio	website		visits	member for	1 year, 8 months
16 badges		location			seen	Apr 10 at 20:54

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Oct 4	awarded	Yearling
Sep 20	asked	Generalization of monotonicity and condition
Aug 29	comment	Any notation for sum of $k$ smallest elements of a vector @DrKW I'm asking for notation that gives the sum of those two entries, i.e. 5. Note that the vector may be unsorted, so [9 3 5 2 8] will give the same answer (5).
Aug 29	asked	Any notation for sum of $k$ smallest elements of a vector
Jul 17	accepted	Closedness of sets under linear transformation
Jul 17	awarded	Nice Question
Jul 16	comment	Closedness of sets under linear transformation $X$ is never the whole space. It's the inverse image of $Y$ under linear operator $x \to C x$.
Jul 16	asked	Closedness of sets under linear transformation
Jul 10	asked	When are attracting sets invariant?
Jun 6	awarded	Commentator
Jun 6	accepted	Prove one set is a convex hull of another set
Jun 6	comment	Prove one set is a convex hull of another set I also believe that I must use polyhedral theory, specifically extreme points. I have been thinking along the same line, but haven't got a proof. Thanks.
Jun 6	comment	Prove one set is a convex hull of another set Incorrect because $k e_i$ is not in $A$. Recall that vectors in $A$ are binary vectors, i.e. elements are only 0 or 1.
Jun 5	comment	Prove one set is a convex hull of another set @hassan: I just edited my question to add that $k$ is an integer.
Jun 5	revised	Prove one set is a convex hull of another set added 26 characters in body
Jun 5	asked	Prove one set is a convex hull of another set
May 1	accepted	Periodicity of calendar
Apr 29	comment	Periodicity of calendar @DougChatham: why don't you make it an answer and I will accept it?
Apr 28	awarded	Editor
Apr 28	comment	Periodicity of calendar @AlexBecker: I've just edited the questions to address your comment.