629 reputation
628
bio website
location Unknow Galaxy
age
visits member for 2 years, 4 months
seen Dec 20 '13 at 18:33

A student in Philosophy but also curious in many fields.


I don't know,

But I want to know.


Apr
15
asked Can we conclude $\prod_{\kappa \in Crd, \kappa=1}^{\kappa<\aleph_\alpha}\kappa=2^{\aleph_\alpha}$ in ZFC?
Apr
12
comment Entropy: Is $H(X_{1},X_{2}) = H(X_{1})$ true?
You are welcome.
Apr
12
answered Entropy: Is $H(X_{1},X_{2}) = H(X_{1})$ true?
Apr
10
answered How can $\mathbb{N}$ have an upper bound?
Apr
10
comment Given a relation $R$, is it reflexive? Symmetric? Transitive?
$R$ is not transitive. Let $a=6,b=15,c=35$, you can easily check them.
Apr
7
comment Difference between “Live” and “Define”
@suissidle The word let sometimes used as define but informally. What's more, it sometimes used as assign, e.g. let $x=0,y=1$.
Apr
7
reviewed Reviewed Show the steps from step 1 to step 2 (2D Potential - Physics + Maths)(Really Urgent)
Apr
7
accepted How to deal with infinite continued fractions in formal language?
Apr
6
comment What's the remainder of a natual number divided by lcm(m,n)?
Thank you, I have improved my question.
Apr
6
revised What's the remainder of a natual number divided by lcm(m,n)?
added 37 characters in body
Apr
6
comment How to deal with infinite continued fractions in formal language?
I see, generally infinite continued fraction $[x_0;x_1,\dots]$ is a (partial) function in ${\mathbb R}^{{\mathbb R}^{\omega}}$, which maps some infinite sequences $\langle x_0,x_1,\dots\rangle$ of reals to a real number.
Apr
5
accepted What's the remainder of a natual number divided by lcm(m,n)?
Apr
5
comment What's the remainder of a natual number divided by lcm(m,n)?
Yes, I understand. Thank you.
Apr
5
asked What's the remainder of a natual number divided by lcm(m,n)?
Apr
5
comment How to deal with infinite continued fractions in formal language?
@MarianoSuárez-Alvarez I found it is hard to express limits in first-order language either... We need to express supremum and infimum of sets(possibly infinite), so does it require higher-order language?
Apr
5
revised How to deal with infinite continued fractions in formal language?
added 40 characters in body; edited title
Apr
5
asked How to deal with infinite continued fractions in formal language?
Apr
4
revised Why don't we study algebraic objects with more than two operations?
correctify
Apr
4
comment Why don't we study algebraic objects with more than two operations?
@ChrisEagle Okay, I see.
Apr
4
comment Why don't we study algebraic objects with more than two operations?
@ChrisEagle Why fields can not be treated as universal algebras?