Gerry Myerson
Reputation
123,129
99/100 score
 3h comment Example for $(a,b,n,k) \in \mathbb{N}^4$, $r(a^n) = b^k$, where $r$ is the reverse of a number See also oeis.org/A035123 "Roots of 'non-palindromic squares remaining square when written backwards'." 12, 13, 21, 31, 33, 99, 102, 103, 112, 113, 122,.... and the less interesting list at oeis.org/A035125, Roots of 'non-palindromic cubes remaining cubic when written backwards', where all 24 entries listed have only zeros and ones for digits. 1d comment My supervisor blocks me from submitting my co-authored paper to a journal But there is no mathematics in your question. Please, try the academia site – the question is wildly off-topic here at m.se. Alternatively, is there someone else in your department you can talk to? 1d comment Out of curiosity, which numbers are necessary? Do you want to have circumferences of ellipses? Then you'll need all the numbers that come up as elliptic integrals. 2d comment Trace 0 and Norm 1 elements in Finite fields You should edit your question, then, so it asks what you actually want to ask. 2d comment Trace 0 and Norm 1 elements in Finite fields Are you still here? 2d comment Is $G/N$ isomorphic to $\mathbb R ?$ Are you still here? 2d comment Proof that theorem M- is center of gravity Center of gravity of what? Apr 27 comment Is there an algebraic solution for this rootfinding problem? Depends on $\gamma$. Yes for $\gamma=0$, $\gamma=1$, $\gamma=2$, $\gamma=3$, $\gamma=4$, $\gamma=1/2$, a few others, false for most values of $\gamma$. Apr 27 comment Proof that theorem M- is center of gravity What are $A$, $B$, $C$, and $M$? What is the question? Why the pythagorean-triples tag? This is about as bad as it's possible for a question to get! Apr 27 comment Trace 0 and Norm 1 elements in Finite fields Are you asking whether there always exists such an element? There certainly can exist such an element – if $q$ is 3 mod 4, and $\ell=2$, and $\alpha$ satisfies $x^2+1=0$. But if $q$ is 1 mod 4, and $\ell=2$, then there can't be any such element. Apr 27 comment How many pairs $(a,b)$ of integers such that , $a^2b^2=4a^5+b^3$ @Young, is that an ongoing competition? Apr 27 comment Is $G/N$ isomorphic to $\mathbb R ?$ What made you decide $N$ is not isomorphic to {the reals under addition}? Did you try multiplying two elements of $N$ to see what you get? Apr 27 comment What is the maximum number of triangles in a planar graph with n vertices? Have you gotten home from work yet? Apr 27 comment The equation $x^3 + y^3 = z^3$ has no integer solutions - A short proof Currently 21 upvotes and 18 downvotes. Must be one of the more divisive answers on m.se. Apr 27 comment How do display matrix A,b,c when using AMPL for a Linear Optimization's problem? This seems to be a coding problem, off-topic here on math.stackexchange. Apr 27 comment How many pairs $(a,b)$ of integers such that , $a^2b^2=4a^5+b^3$ Can you tell us where you came across this problem? Apr 27 comment Vectors and tractors Not a good idea to just dump a problem here, with no indication of what you know about the problem, where it comes from, how far you got on it, where you got stuck, and so on. Apr 27 comment Two normal operators are similar if and only if they are unitarily similar @Martin, the question has been reopened. Apr 27 comment Galois group of a quartic which is also a quadratic in $x^2$ And as @Ryan notes in a comment, even if $f(x)=g(x^2)$, the degree of $E_f$ over $E_g$ may be 4, not 2. Apr 27 comment Find a polynomial such that f(T)=T* of a given linear operator Good. If you get the problem worked out, I encourage you to write it up and post an answer.