bio  website  fph.altervista.org 

location  Pisa, Italy  
age  31  
visits  member for  4 years, 10 months 
seen  9 hours ago  
stats  profile views  2,094 
Numerical linear algebra. Mainly matrix equations and their applications (control theory, applied probability).
19h

reviewed  Approve suggested edit on Interactions between (set theory, model theory) and (algebraic geometry, algebraic number theory ,…) 
2d

reviewed  Approve suggested edit on Gradient of the energy functional in $H^{1,2}$norm 
2d

comment 
graphical estimate of convergence rates [looking for textbook reference]
What do you mean exactly with "graphical methods"? A loglog plot? 
Sep 19 
comment 
How many simultaneous polynomial equations of degree 2 can software solve today?
Also, consider scicomp.stackexchange.com  people there are much more focused on scientific computing. 
Sep 19 
comment 
How many simultaneous polynomial equations of degree 2 can software solve today?
You asked MuPAD to return all $2^{100}$ solutions  no wonder it doesn't work. You should probably use a NewtonRaphsontype method instead, if you only want one. I haven't run anything too similar, but my guess would be that $n=100$ is doable with it, and $n=3000$ is not completely hopeless if you can find a good starting point. 
Sep 19 
answered  The set of matrices with same spectral radius 
Sep 19 
reviewed  Approve suggested edit on Integrability of second derivative of conformal mappings 
Sep 19 
comment 
Success Ranking Methodology
This is a modelling problem: you are basically asking to define "better". It's not a question that any amount of mathematics can answer. 
Sep 18 
revised 
Under what conditions the limit process of a sequence of Markov processes is Markov?
added 7 characters in body; edited title 
Sep 17 
answered  Solution to generalized Sylvester equation 
Sep 17 
reviewed  Approve suggested edit on Is there a dense subset of the real plane with all pairwise distances rational? 
Sep 14 
awarded  Popular Question 
Sep 14 
revised 
Another kind of the positivity of matrices
added 19 characters in body 
Sep 10 
comment 
On the solution of a generalized Lyapunov equation
@Suvrit I agree  Both the sumofnorms and the normofsum version are mentioned in the discussion, I must have missed the stronger form when I wrote that comment. 
Sep 9 
revised 
General and generic forms in a vector space
edited body 
Sep 9 
comment 
Cases of Mathematical Fraud
Might be on topic on academia.se, but also less likely to get an answer since there are less mathematicians there. 
Sep 9 
comment 
Bounds on the effect of a matrix product on the Frobenius norm
What does "$S\succeq0$ and is fat" mean? 
Sep 8 
reviewed  Approve suggested edit on Number of points in an intersecting linear hypergraph 
Sep 6 
reviewed  Approve suggested edit on 
Sep 6 
answered  reducing an norder differential equation to a first order system of equations using either sagemath or sympy 