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An expert is a man who has made all the mistakes, which can be made, in a very narrow field. (Niels Bohr)


16h
reviewed Close Prove that theorems about trace of matrix:
1d
reviewed No Action Needed Is the ring of entire functions coherent?
1d
reviewed Close How do i solve this equation?
1d
reviewed Leave Open Finding supremum in $S=\{q\in\Bbb Q:q<x\}$
1d
reviewed Close Probability exercise easy
1d
revised Stokes theorem problem
added 98 characters in body; edited tags
1d
reviewed Leave Open Stokes theorem problem
1d
reviewed Leave Open Combination and Permutation
1d
reviewed Leave Open Integral Contest
1d
reviewed Close Real analytic methods for the following integral
1d
reviewed Leave Open Prove using anxioms that $1 \neq 0$ - checking
1d
reviewed Close How do irrational numbers lie on the number line?
1d
reviewed Approve suggested edit on Prove by mathematical induction that exponentials grow faster than polynomials
Oct
20
revised What distinguishes the Measure Theory and Probability Theory?
added 79 characters in body
Oct
15
revised $ d(x,y)^2 \le d(x,z)^2 - d(y,z)^2\color{}{+\varphi\big(x,y,z,d(x,y),d(y,z) \big)}? $
Add expression "one sharp inequality" in may question.
Oct
15
reviewed Close Excel Problem-Correlation
Oct
15
reviewed Close Find a point C on line segment AB such that line segment DC is perpendicular to AB. D is a point outside the line segent
Oct
15
reviewed Close Beautiful problem about polyhedrons
Oct
10
reviewed Approve suggested edit on Circle and two points
Oct
10
reviewed Approve suggested edit on Notation For Complex Numbers