Reputation
2,466
Next privilege 2,500 Rep.
Create tag synonyms
Badges
5 31
Newest
 Revival
Impact
~52k people reached

Apr
10
revised Applications of resolution of singularities
edited tags
Mar
29
comment Algorithmic computing kernel of a graded homomorpism
@CaptainLama for example consider a hommorphism between two polynomial ring, for computing its kernel one can use Groebner basis and elimination which is a nice application of Groebner basis and one can see in many books about computational algebraic geometry or commutative algebra. Or the one I mentioned about SyZyGies. By computing I mean finding a generator explicitly.
Mar
29
asked Algorithmic computing kernel of a graded homomorpism
Jan
31
awarded  Revival
Jan
30
accepted Non-linear optimization programming
Jan
30
comment Non-linear optimization programming
So please check if my conclusion from your answer is right or not. If my constrains and target functions be twice differential which polynomials are, and I be in a box for my variables then "global optimization using interval analysis" is always working for my problem whether they be linear or not or whether they are convex or not. So just being in a box and twice differentiablity is enough for this method, yes?
Jan
29
asked Non-linear optimization programming
Jan
23
answered Matroid Direct Sum
Jan
9
revised Depolarizing channel
edited body
Jan
9
comment Relation between ranks of submatrices of a matrix.
In fact you only need to write the two computations for s_i,j and then using association of multiplication and distribution of multiplication on summation. It is easy to write it. ^_^
Jan
9
revised Relation between ranks of submatrices of a matrix.
edited title
Jan
9
comment Relation between ranks of submatrices of a matrix.
The answer is too easy, but it seems they closed your question so I answer it here. By assuming '9', all s_k,j (k from 1 to i-1) is a linear combination of other columns and same but maybe different linear combination for s_i,k, now for the matrix S(i,j) you only don't know value of one entry which is S_i,j, S_i,j should satisfy the two linear relations using entries added in steps S(i-1,j) and S(i,j-1), obviously you can have at most one possible values conditioning to have a same results starting from linear relation of row or column, which is true..
Jan
9
revised Relation between ranks of submatrices of a matrix.
deleted 34 characters in body
Jan
4
revised Depolarizing channel
added 30 characters in body; edited tags
Dec
28
asked A reference containing computational examples for Quantum information
Dec
21
comment limit of a simple complex function
ِYou've missed "$-3i$" in nominator of the second fraction for $-f(i)$. And in sequel of your limit computation you can multiple complex conjugate of denominator to denom and nomin of your fraction, then following using lHopital.
Dec
17
comment Prove That If $(x^{2}+y^{2})\cos^{2}\psi+z^{2}\cot^{2}\psi=A^2$ then $\nabla ^2 \psi=0$.
@GiuseppeNegro really? So you checked and this equation failed to satisfy Laplacian? I'll try later when I found time, as I answered to Shushao Cao, this question was asked from me by a Physics student.
Dec
13
awarded  Revival
Dec
13
revised How does one get this equation?
added 1 character in body
Dec
11
answered limit of a simple complex function