Stack Exchange

Martin Argerami

Regina, Canada

http://www.uregina.ca/science/mathstat/faculty-staff/faculty/argerami-martin.html

I'm an Operator Algebraist (which interestingly makes me an analyst!)

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Top Questions
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113
Can I travel back to my homeland after being granted German refugee status?
travel.stackexchange.com

103
In plain English, why does conversion from hexadecimal to binary work so cleanly?
math.stackexchange.com

92
Zero divided by zero must be equal to zero
math.stackexchange.com

69
Are there any flights which fly above the Bermuda Triangle?
travel.stackexchange.com

68
How can I argue against: "System is unhackable so why patch vulnerabilities?"
security.stackexchange.com

65
Why do academics frequently write very short email replies?
academia.stackexchange.com

62
Solving $(z+1)^5 = z^5$
math.stackexchange.com

50
$1/i=i$. I must be wrong but why?
math.stackexchange.com

49
Prove that a polynomial has at least one nonreal complex root
math.stackexchange.com

48
How to respond to 17 year old daughter going out with a 25 year old man?
parenting.stackexchange.com

45
Have any large aeroplanes been landed — safely and without damage — in locations that they could not be flown away from?
aviation.stackexchange.com

43
Is it necessary to pay extra for navigation when renting a car in the US?
travel.stackexchange.com

43
Direct voting on every issue (referendum) - new political system
politics.stackexchange.com

41
How can I prove an airline ticket is fake?
travel.stackexchange.com

41
Volterra Operator is compact but has no eigenvalue
math.stackexchange.com

40
Why is the Frobenius norm of a matrix greater than or equal to the spectral norm?
math.stackexchange.com

40
Evaluating definite integrals using Fundamental Theorem of Calculus
math.stackexchange.com

40
Diagonalizable matrices with complex values are dense in set of $n\times n$ complex matrices.
math.stackexchange.com

40
Why does the Hilbert curve fill the whole square?
math.stackexchange.com

38
Stay in academia or become professor without overworking, is it possible?
academia.stackexchange.com

37
What made you choose your research field?
math.stackexchange.com

36
Why didn't Western countries boycott the 2018 World Cup?
politics.stackexchange.com

35
Proof of when is $A=X^TX$ invertible?
math.stackexchange.com

35
If gravity isn't a force, then why do we learn in school that it is?
physics.stackexchange.com

35
If $A$ and $B$ are positive definite, then is $B^{-1} - A^{-1}$ positive semidefinite?
math.stackexchange.com

35
Was a professor correct to chastise me for writing "Prof. X" rather than "Professor X"?
academia.stackexchange.com

35
How can I pull back an email that has already been sent?
superuser.com

35
What will be the value of the following determinant without expanding it?
math.stackexchange.com

34
Examples of mathematical results discovered "late"
math.stackexchange.com

34
3-4 months infant travel: 1 long trip (13 hours) or 3 medium trips (6+6+4 hours)
travel.stackexchange.com

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