Beatrice
Reputation
243
Top tag
Next privilege 250 Rep.
View close votes
Badges
4 13
Newest
Impact
~21k people reached

• 0 helpful flags
• 16 votes cast

# 46 Actions

 Oct30 accepted When is a positive semi-definite matrix A positive definite? Oct30 comment Given $AX = XD$, where $D$ is a diagonal matrix and $A$ is idempotent, is $D$ idempotent as well? no it's not hw, just something i was wondering about Oct29 asked Given $AX = XD$, where $D$ is a diagonal matrix and $A$ is idempotent, is $D$ idempotent as well? Oct12 asked When is a positive semi-definite matrix A positive definite? Jun6 accepted Can a function be homothetic if it's not homogeneous? May26 asked Can a function be homothetic if it's not homogeneous? Apr13 accepted What's the opposite of a cross product? Apr12 asked What's the opposite of a cross product? Apr9 awarded Supporter Apr9 comment Payoffs question I agree that the question is unrealistic as well. Thanks for your answer. Apr9 accepted Payoffs question Apr1 comment Payoffs question Strangely, the answer given by my professor is f= 0.75 while I thought that the answer should be f = 0 like all your answers suggested. I'm gonna think it over again. Apr1 asked Payoffs question Mar29 awarded Autobiographer Mar29 awarded Citizen Patrol Mar25 accepted How is the column space of a matrix A orthogonal to its nullspace? Mar25 asked How is the column space of a matrix A orthogonal to its nullspace? Mar22 accepted If a matrix is negative semidefinite, does it have a local maximum? Mar22 accepted What property of the transition matrix of a Markov process determines that there is a finite, non-zero long-term distribution? Mar22 comment What property of the transition matrix of a Markov process determines that there is a finite, non-zero long-term distribution? Thanks, that was very helpful.