Mike Flynn
  • Member for 9 years, 5 months
  • Last seen this week
5 answers
70 votes
38k views
99 bookmarks
What is a covector and what is it used for?
3 answers
10 votes
2k views
7 bookmarks
Exercises to help in the understanding of differential forms?
2 answers
6 votes
1k views
2 bookmarks
Examples of qualities intrinsic vs extrinsic to a surface besides Gaussian Curvature
1 answers
5 votes
105 views
1 bookmarks
Counting the number of roots of a polynomial in each quadrant of the complex plane
1 answers
5 votes
2k views
4 bookmarks
How to properly take derivatives in calculus of variations (Euler-Lagrange formula)
3 answers
5 votes
439 views
A good book that provides context for abstract algebra
2 answers
4 votes
993 views
1 bookmarks
Conditions for a nonnegative Fourier transform
1 answers
2 votes
54 views
Eigenvalue response to perturbation
3 answers
2 votes
44 views
Second order non-linear ode - am I on the right path?
1 answers
2 votes
162 views
How would you define a geodesic in $\operatorname{SO}(2n)$ and $\operatorname{SO}(2n+1)$?
1 answers
2 votes
158 views
2 bookmarks
A method to test for uniform distribution over a convex polytope
1 answers
2 votes
523 views
What is the typical method for sampling uniformly in a convex polytope
2 answers
2 votes
127 views
1 bookmarks
Is there a quick way to compute the matrix whose column space is the basis of the null space of another matrix?
0 answers
2 votes
158 views
Problem generating random vectors with a randomized linear programming with equality constraints (weird clustering)
1 answers
1 votes
56 views
$\frac{d}{dx} \int_{-\infty}^\infty f(x) dx$ is not $f(x)$ right?
1 answers
1 votes
32 views
Root dependence on coefficient terms
1 answers
1 votes
53 views
1 bookmarks
Does there exist a test, or series of tests, to ensure that a polynomial has only one real root, and it's positive?
0 answers
1 votes
38 views
Solving $\mathbf J \times \mathbf B = \mathbf C$, $\mathbf J = \nabla \times \mathbf B$ for $\mathbf J$?
1 answers
1 votes
2k views
1 bookmarks
Dot product with the gradient of a vector
2 answers
1 votes
246 views
1 bookmarks
Second order differential equation: missing degree of freedom
0 answers
1 votes
79 views
Looking for the complete works of Euler and Gauss in full technical detail
1 answers
1 votes
213 views
Understanding detailed balance (crossposted from stats)
1 answers
1 votes
260 views
1 bookmarks
Two different ways to take the derivative on composite functions?
0 answers
1 votes
553 views
What is the diameter of a manifold?
0 answers
0 votes
13 views
$\frac{\partial^2 f}{\partial r^2}$ in terms of gradients (in rectilinear coordinates)
1 answers
0 votes
119 views
Proved that cubic equation w/ real coefficients always has 2 complex conjugate roots but that's clearly not the case.
0 answers
0 votes
32 views
Analyzing behavior around a maximum without explicitly solving a differential equation
1 answers
0 votes
57 views
Contradiction in Fourier analysis of differential equation - what rules did I break?
0 answers
0 votes
51 views
Is it possible to fourier analyze a hill function?
0 answers
0 votes
70 views
2 bookmarks
Bessel function solution check