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5h
awarded  Yearling
14h
revised What is the common term of this series?
edited tags
14h
comment How can I convert four dimensions into two?
It cannot be done. The set $A+B+C +D = 1$ is three dimensional. You are asking to make it into a 2 dimensional figure with some linear transformations. That cannot be done (in a one-to-one way).
14h
revised How can I convert four dimensions into two?
edited tags
14h
revised Strange question about magnetic dipole in a plane at infinite distance
edited tags; edited tags
14h
revised How do component wavelengths *add* to wavelength of light color?
edited tags
14h
revised Calculate forward direction vector using 2 vectors
edited tags
14h
revised If $G\simeq H$ and $d||G|$ then both $G$ and $H$ have the same number of elements of order $d$?
edited tags
15h
comment At the instant of release of an object from rest. Is the only force that can act its weight?
I am closing this question as there is an exact duplicate at physics.SE with an accepted answer. physics.stackexchange.com/questions/132633/…
16h
comment Riemann's sum inequality problem
Welcome to MSE: please pay attention to this FAQ item concerning the asking of literally homework questions. (I write this because of some of the language specified in your linked document.)
16h
revised What is the average of no numbers?
edited tags
16h
comment Collision resistant hash function
I am closing this question as the version over as CS cs.stackexchange.com/questions/7928/… has received an answer. Please continue all discussion on that site.
16h
revised Prove $\sum_{cyc} \frac{\sqrt{xy}}{\sqrt{xy+z}}\le\frac{3}{2}$ if $x+y+z=1$
added 85 characters in body
20h
answered Relation between different forms of Cauchy-Kovalevskaya Theorem
1d
comment Relation between different forms of Cauchy-Kovalevskaya Theorem
There's in fact a very simple thing you can do. Artificially add to your list of unknowns the coordinate functions $x,y$. $x$ solve $\partial_x x = 1$ and $y$ solves $\partial_x y = 0$, both are first order PDEs.
1d
comment Does there exists a finitely presented group with Dehn function > n^3 and all asymptotic cones simply connected
I am closing the question as the question was cross-posted to MathOverflow where it got an answer in the comments. See mathoverflow.net/questions/162259/… Interested readers should visit the MO page to continue the discussion there.
1d
comment Can we rotate a 3D lattice of deformed spheres?
@AlistairRiddoch: (1) You cannot summon other members like that. Please read this document on how comment-replies work. You are lucky that I am telepathic (not really). (2) I have no comment to your question, mostly because I don't see how EricStucky got his interpretation of your question and also that I don't understand what you are trying to ask. Sorry.
1d
comment delete post, figured it out
If someone knows what the original question reads, please comment on the meta thread linked in the comment one above.
1d
comment delete post, figured it out
Meta discussion meta.math.stackexchange.com/questions/16652/…
1d
answered That for a polynomial of degree $n$ , $\displaystyle\frac{M(r)}{r^n}$ is non-increasing function of r .