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seen Oct 12 at 20:07

I wish, I could close or deactivate my profile here by my own for a very long time!


Sep
3
comment About Rees homomorphism
That you say ...non-singleton kernel class... is the same fact that S is simple iff it consists of a single J-class ? Or I misunderstand the point? Thanks James for the time.
Sep
3
revised Evaluate $ \int_{0}^{1} \ln(x)\ln(1-x)\,dx $
edited tags
Sep
3
comment About Rees homomorphism
@JamesMitchell: Dear James, sorry for bringing up the question inappropriately. I meant "How can that kernel be a Ress con.?" Indeed, $\text{ker}{\phi}$ is a con. on $S$ and if it wanted to be a Ress con. we need an Idwal such that $\text{ker}{\phi}=(I\times I)\cup \Delta_{S}$. I am asking about this possible $I$. Sorry for my bad English.
Aug
31
revised About Rees homomorphism
added 5 characters in body
Aug
31
revised Can injective function has an element that maps to nothing?
edited tags
Aug
31
asked About Rees homomorphism
Aug
31
awarded  laplace-transform
Aug
30
answered A tricky complex numbers if and only if proof
Aug
30
revised Calculating $\text{D}g$ of $g(x,y) = \int_\frac1x^1\frac1t\exp(t^3x^2y)\text{d}t$
added 14 characters in body; edited title
Aug
30
revised Does there exists a homomorphism for any groups $G$ and $H$
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Aug
30
comment Laplace Transform assistance
@IanswereveryquestionIsee: Cs/(s^+4) is assotiated with Ccos(2t) and D/(s^2+4) is assotiated with (D/2)sin(2t).
Aug
30
revised Proving determinants using properties of determinants
edited tags
Aug
30
comment Laplace Transform assistance
@IanswereveryquestionIsee: I meant C/(s^2+4) should be (Cs+D)/(s^2+4). Indeed, you have s^2+4 so you should assume a term like Cs+D in the numerator.
Aug
30
comment Laplace Transform assistance
Regarding to the method of partial fractions (as you can find it in integration) when you have $ax^2+bx+c$ in the denominator so you should assume something like Ax+B in its numerator.
Aug
30
answered Laplace Transform assistance
Aug
30
reviewed Close How to determine whether it is vector space?
Aug
30
reviewed Close Prove a condition for a Banach algebra
Aug
30
revised Examples for infinite Hamiltonian group
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Aug
27
answered Determining if series converges or diverges
Aug
27
revised Alternating group $A_n$ generated by its subgroups $A^{(i)}_{n-1}$
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