Reputation
533
Top tag
Next privilege 1,000 Rep.
Create new tags
Badges
3 15
Newest
 Custodian
Impact
~8k people reached

  • 0 posts edited
  • 0 helpful flags
  • 194 votes cast
Jul
31
comment How to find the point in convex set $C$ that is closest to $y\notin C$?
Why do we divide it by the norm?
Jul
31
comment How to find the point in convex set $C$ that is closest to $y\notin C$?
okay. $(x_1,x_2)$ is the center. thanks.
Jul
31
comment How to find the point in convex set $C$ that is closest to $y\notin C$?
Could you please explain it a bit?
Jul
31
revised How to find the point in convex set $C$ that is closest to $y\notin C$?
edited body
Jul
31
revised What condition do I have set to have $x_j$ for $j=1,…,n$ to be non-negative?
added 37 characters in body
Jul
31
asked How to find the point in convex set $C$ that is closest to $y\notin C$?
Jul
31
accepted inner product of positive semi definite symmetric matrices
Jul
31
asked inner product of positive semi definite symmetric matrices
Jul
31
accepted What condition do I have set to have $x_j$ for $j=1,…,n$ to be non-negative?
Jul
31
comment What condition do I have set to have $x_j$ for $j=1,…,n$ to be non-negative?
thanks a lot. Could you please explain why half of the length of the axeas are $1/\sqrt{q_{jj}}$.
Jul
31
asked What condition do I have set to have $x_j$ for $j=1,…,n$ to be non-negative?
Jul
31
comment Finding matrix representation of an Ellipsoid
after calculations $b=c=-3/16$ ($Q$is symmetric) but $a+d=5/8$. I guess a=d. But is this related to the info about axes?
Jul
30
comment Finding matrix representation of an Ellipsoid
What does the axes being parallel to y=x and y=-x mean?
Jul
30
awarded  Custodian
Jul
30
reviewed Edit Finding matrix representation of an Ellipsoid
Jul
30
asked Finding matrix representation of an Ellipsoid
Jul
30
accepted matrix multiplication manipulation
Jul
28
asked matrix multiplication manipulation
Jul
6
accepted How come $Ax\le b$ and $c^Tx\ge \alpha +\epsilon$ has NO nonnegative solution.
Jul
6
revised How come $Ax\le b$ and $c^Tx\ge \alpha +\epsilon$ has NO nonnegative solution.
added 64 characters in body