7,942 reputation
21154
bio website tetori.blog.me
location South Korea
age 19
visits member for 1 year, 7 months
seen 13 hours ago

I am not good at English, so any correction of grammatical error would be welcomed.

Pushup is too hard :(


Jul
20
reviewed Approve suggested edit on How to prove $\int_0^\pi \frac{dx}{2+2\sin x+\cos x}=\log3$?
Jul
20
answered How to prove $\int_0^\pi \frac{dx}{2+2\sin x+\cos x}=\log3$?
Jul
19
comment Logic Inference Challenge
@KijdjASD Yes. This `inference rule' has a counterexample, and I show that there is a such counterexample.
Jul
19
revised The Continuum Hypothesis & The Axiom of Choice
Modify link.
Jul
19
reviewed Close why is algebraic multiplicity always equal to the geometric multiplicity of distinct eigen values corresponding to Symmetric matrices?
Jul
19
reviewed Close The slope of a line and it's angle their relation to a difference
Jul
19
revised Logic Inference Challenge
added 8 characters in body
Jul
19
revised Montgomery&Vaughan's Multiplicative number theory theorem 13.3
minor modification
Jul
19
answered Logic Inference Challenge
Jul
15
reviewed Close Degree of a single extension of a field.
Jul
15
reviewed Leave Open How to integrate these integrals? $\int{\frac{1}{(x^x-x^{-x})}} dx$
Jul
15
reviewed Leave Open Entropy of matrix vector product
Jul
15
reviewed Leave Open The dimensions for Lie Groups
Jul
15
reviewed Close Show that this PDE can be reduced to the heat equation
Jul
12
reviewed Close to prove partial derivative of a function f is bounded
Jul
12
reviewed Close Five apples, three pears and two bananas cost £3.18. Four apples, eight pears and three bananas cost £4.49.
Jul
12
reviewed Close Prove that $n<(3/2)^n$ for any $n$ with induction
Jul
12
reviewed Close Simple method the show that a group of order 15 is cyclic
Jul
9
comment Does Vitali set imply the axiom of choice
@StrangerLoop As I know, Vitali set and a nonmeasurable set is somewhat different concept - Vitali set is nonmeasurable, but every nonmeasurable set is not Vitali set. Vitali set is a set constructed by specific way.
Jul
9
comment Can one talk about equivalences classes in a class(which might not be a set).
As I see, Scott's trick is helpful your attempt.