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David Zhang's user avatar
David Zhang's user avatar
David Zhang's user avatar
David Zhang
  • Member for 10 years, 1 month
  • Last seen more than a week ago
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Second-year undergraduate student at Vanderbilt University studying math, physics, and computer science.

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Top posts
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52
Is there an explicit formula for the hessian of "Determinant"?
Sep 7, 2016
answer
32
For positive definite $A,B$ why does $AB+BA$ tend to be positive definite?
Aug 4, 2016
question
19
How can I distinguish a genuine solution of polynomial equations from a numerical near miss?
Sep 2, 2018
answer
18
Is the Jaccard distance a distance?
Nov 21, 2018
question
4
How many expressions can be formed with $k$ commutative and associative functions?
Jan 31, 2015
answer
2
Solution of second order differential equation with singularities at 0,1, and ∞
Aug 8, 2015
question
0
Estimating the number of colors in a bucket
Mar 20, 2015
answer
0
Generalized adjoint operation valid?
Jul 29, 2021
Top network posts
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598
How can I tell if a string repeats itself in Python?
118
Am I morally obligated to pursue a career in medicine?
112
Is the derivative the natural logarithm of the left-shift?
82
Besides proving new theorems, how can a person contribute to mathematics?
75
Why does this "miracle method" for matrix inversion work?