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visits member for 2 years, 5 months
seen Jun 19 '12 at 2:52

Apr
8
awarded  Notable Question
Sep
13
awarded  Popular Question
Jun
9
revised a question on general conditional probability
added 84 characters in body
Jun
9
asked a question on general conditional probability
Jun
9
revised expectation of product of independent random variable
edited title
Jun
9
asked expectation of product of independent random variable
Jun
9
accepted probability question on characteristic function
Jun
9
asked How to use joint characteristic function to calculate characteristic function for single variables?
Jun
9
revised probability question on characteristic function
added 3 characters in body
Jun
9
asked probability question on characteristic function
May
30
accepted existence of Lebesgue integral
May
30
accepted Example that the Lebesgue integral of a function can take any value between $[0,c]$
May
30
accepted Prove that $f_n$ converges to $f$ in $L_1$ norm given $\int f_n \to \int f$
May
30
revised How to find irreducible polynomials over $\mathbb{Q}(i)$ with prescribed Galois group?
added 273 characters in body
May
30
comment How to find irreducible polynomials over $\mathbb{Q}(i)$ with prescribed Galois group?
@Lubin : I found I made mistakes in looking for polynomial in Q[x] whose galois group isormorphic to C2xc2 , C5 . For isomorphic to C2xC2, the only polynomial I can think of is of(X^2 - D1)(x^2 -D2) form , where D1 , D2 are not square in Q . However , this should be reducible in Q .. For C5 , the polynomial I found is reducible too.. Some of my classmates think there is no such irreducible polynomial over Q in C2xC2 and C5 case .. Is that correct ? I am wondering if there is some systematic way to find these polynomials .
May
29
asked How to find irreducible polynomials over $\mathbb{Q}(i)$ with prescribed Galois group?
May
29
asked An elementary graph theory problem
May
26
comment existence of Lebesgue integral
i havent learnt laytex... Can any one help me to edit it ?
May
26
asked existence of Lebesgue integral
May
25
revised Prove that $f_n$ converges to $f$ in $L_1$ norm given $\int f_n \to \int f$
added 50 characters in body; edited tags