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visits | member for | 5 years |
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Sep 27 |
comment |
what-if.xkcd.com: stabbing (simply connected) regions on the 2-sphere with few geodesics
In the case of the US, which fits in a hemisphere, it might simplify things slightly to use gnomonic projection to reduce to the analogous problem with lines and plane regions. |
Jan 10 |
answered | Is there a similar theorem in the partially hyperbolic case? |
Nov 25 |
reviewed | Reject suggested edit on Degeneration of riemannian metrics with curvature bounds |
Nov 9 |
awarded | Custodian |
Nov 3 |
awarded | Custodian |
Nov 3 |
reviewed | Approve suggested edit on Elementary Embeddings and Relative Constructibility |
Oct 28 |
comment |
Dynamical properties of injective continuous functions on $\mathbb{R}^d$
Thanks! In light of your comment, I added your good point about a stronger downward component and made the wording overall a bit less tentative. |
Oct 28 |
revised |
Dynamical properties of injective continuous functions on $\mathbb{R}^d$
added 264 characters in body |
Oct 28 |
answered | Dynamical properties of injective continuous functions on $\mathbb{R}^d$ |
Oct 27 |
awarded | Yearling |
Sep 22 |
awarded | Informed |
Sep 2 |
answered | How to understand a solenoid? |
Jul 9 |
answered | Force-directed graph drawing in 1D? |
Oct 27 |
awarded | Yearling |
Oct 28 |
awarded | Yearling |
Oct 26 |
awarded | Enlightened |
Oct 26 |
awarded | Nice Answer |
Oct 15 |
comment |
When is a submanifold of $\mathbf R^n$ given by global equations?
For $S^1$, what about $f(x, y, z) = (x^2 + y^2 - 1, z)$? But is it possible to do a knot? |
Jul 23 |
comment |
Fixed points which are not locally attractive can have distant basins of attraction?
Under one interpretation of your terms, here's an example. The flow defined by $x' = x^2$ has a non-locally-attracting fixed point at 0, but any open set of negative numbers is attracted to it. But perhaps you mean something else? |
Apr 25 |
comment |
Orthogonal foliations
+1. This is really nicely written--it's an excellent example of how to give a helpful expository (as opposed to problem-solving) answer. |