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answered Is it possible to solve for $m$ in a linear equation without knowing $b$?
Jul
23
comment Probability of Punctures for a group of cyclists
@EricRichardson Right. The difference is the probability of a single person getting a puncture versus the probability of someone in the group getting a puncture.
Jul
23
answered Probability of Punctures for a group of cyclists
Jul
23
comment Prove there exists a constant $K>0$ such that $|e^z-1-z-\frac{z^2}{2}|<K|z^3|$ as $z \to 0$
What is asymptotics but sexed-up Taylor expansions?
Jul
23
answered What are intuitively the diffeomorphisms $\theta^t(p)=\Theta (t,p)$, associated to the local flux $\Theta$ of the vector field $X$?
Jul
22
comment Integration of exponential functions and cosine function
Power series for the exponential and then integrate each term by parts?
Jul
21
comment Example of a surface where more than one coordinate patch is needed.
Try a hyperbolic surface.
Jul
18
answered Derivation of Euler Equation
Jul
16
comment Is there a Fourier invariant basis?
@TrialAndError that looks like an answer to me.
Jul
16
comment How to express curvature of a level set in terms of derivatives of a function?
Have you looked through do Carmo?
Jul
13
comment Do they have a mistake in this heat equation?
@Julio Is this better? Again, apologies for the inconsiderate initial answer.
Jul
13
revised Do they have a mistake in this heat equation?
added 418 characters in body
Jul
13
revised Do they have a mistake in this heat equation?
added 418 characters in body
Jul
13
comment Do they have a mistake in this heat equation?
@Julio Sorry! I should have thought more about what your background probably is. Editing my answer now ...
Jul
13
reviewed Approve Do they have a mistake in this heat equation?
Jul
13
answered Do they have a mistake in this heat equation?
Jul
13
comment A manifold such that its boundary is a deformation retract of the manifold itself.
How about a Mobius strip, modulo concerns about what the definition of "is" is?
Jul
10
awarded  Sportsmanship
Jul
10
comment Finding a $1$-form on a hyperboloid of one sheet which is closed but not exact
Nitpick: $d\theta$ is a one-form, $\partial_\theta$ is a vector field.
Jul
10
answered Finding a $1$-form on a hyperboloid of one sheet which is closed but not exact