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awarded  Popular Question
May
2
comment How to show $\frac{19}{7}<e$
Use the Taylor expansion of e^x for x=1. The sum will have positive terms therefore the partial sums will be monotonically increasing
Apr
20
awarded  Notable Question
Apr
16
awarded  Yearling
Apr
6
comment Is there a regular hexagon with integral corners?
$$e^{\frac {\pi i}{3}} \notin \mathbb {Q} (i) $$
Mar
30
accepted If $\min(\alpha,F)$ has only one root in $E$, must $\min(p(\alpha),F)$ have only one root in $E$
Mar
24
comment Control high order moments by lower order moment?
Answer is no to both questions when p>1. But the answer is yes when p <1
Mar
24
answered How to show that $max(f,g),min(f,g)$ is continuous for continuous $f,g$
Mar
23
revised If $\min(\alpha,F)$ has only one root in $E$, must $\min(p(\alpha),F)$ have only one root in $E$
added 45 characters in body
Mar
20
comment If $\min(\alpha,F)$ has only one root in $E$, must $\min(p(\alpha),F)$ have only one root in $E$
@wore Hi, Why is that true ? counterexample: consider $\mathbb{Q}<\mathbb{Q}(x,2^{\frac{1}{3}})$
Mar
20
asked If $\min(\alpha,F)$ has only one root in $E$, must $\min(p(\alpha),F)$ have only one root in $E$
Mar
5
asked Can we have a continuous choice in the mean value theorem
Feb
21
comment Stochastic processes book suggestions.
It doesn't seem to be rigorous
Feb
21
asked Stochastic processes book suggestions.
Jan
28
accepted Theorems which are proven by proving the existence of a formal proof without knowing the formal proof
Jan
28
comment If we have events $E_k, k \in \mathbb{R}$ such that $P(E_k) = 0$ for all $k \in \mathbb{R}$, what is $P(\cup_{k \in \mathbb{R}}E_k)$ equal to?
Or as sangchul pointed, the question may even be meaningless
Jan
28
comment Ideas for approaching set theory when you've already studied higher abstractions?
Elementary set theory from munkres topology
Jan
19
revised Showing that $A+\epsilon I$ is non-singular for $0<|\epsilon|<r$
added 38 characters in body
Jan
19
answered Showing that $A+\epsilon I$ is non-singular for $0<|\epsilon|<r$
Jan
19
awarded  Popular Question