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 Apr 10 awarded Yearling Apr 10 awarded Yearling May 19 comment Simplifying a certain bound Is $i$ some natural number and $C>0$? May 19 answered Simplifying a certain bound Apr 10 awarded Yearling Mar 28 comment Does $s(0) = s(1)$ define a vector subspace in $\mathbb C[X]$? I believe you are asking whether the set $\{ s \in \mathbb{C}[x] : s(0) = s(1) \}$ is a vector space. Is that correct? Dec 11 comment An Example of Abelian Group with exactly one maximal subgroup. Very nice and complete answer. I enjoyed reading it. :) Dec 10 revised An Example of Abelian Group with exactly one maximal subgroup. deleted 86 characters in body Dec 10 revised An Example of Abelian Group with exactly one maximal subgroup. deleted 346 characters in body Dec 10 revised An Example of Abelian Group with exactly one maximal subgroup. added 45 characters in body Dec 10 comment An Example of Abelian Group with exactly one maximal subgroup. @Babgen: Yeah, I had a feeling there had to be a mistake in there. You are right, my point does not hold. I should get more sleep. Will try to fix it, if I can't do so I will delete this answer. I don't see what you are getting at with $\mathbb{Z}_{p^k},$ though. For finite groups, clearly every subgroup is contained in a maximal subgroup. Dec 10 answered An Example of Abelian Group with exactly one maximal subgroup. Nov 13 comment How many permutations (bijections) are there on the set B = {0,1}^(8) of bytes? How can there be permutations if there is no function? @user108471 Yes. On a set of $n$ elements there are $n!$ permutations. Nov 10 comment Group classification generated by two elements He did, but the question very much seemed like a homework problem. This is why I did not write a detailed answer that can just be copied without giving it some thought. That being said, my answer really doesn't leave much to be done. Edit: I just noted a downvote on the answer. Is there anything wrong with it? Nov 8 answered Group classification generated by two elements Nov 8 comment Proving that a greedy algorithm yields the optimal solution for a problem Also note that the easier problem obtained by setting $B=\emptyset$ is the bin packing problem which is known to be NP-hard. Nov 8 comment Group classification generated by two elements @user43418 Which have you seen, dihedral groups or Coxeter groups in general? Have you seen finite presentations for dihedral groups? Nov 8 comment Group classification generated by two elements Hint in the spirit of DonAntonio's comment: Think about the generators' product $xy$. Also, if you know finitely presented groups, they might help. Oct 29 comment Color adjustment with reference pixel values I see. Thanks for the explanation, I will think about it and maybe post something later (no time right now). Any answer I may offer will necessarily be heuristic, though. Basically you are asking for an appropriate distance function in your colour space so you can choose the predefined colour closest to your measured colours. Of course, you can always construct examples where such a method fails. Oct 29 comment Color adjustment with reference pixel values I think the colour space isn't terribly important for the question. As far as I am concerned it is just a $3$-dimensional space (a vector space over $\mathbb{F}_{256}$ or even just a set of $256^3$ elements). I'm still not sure what you want, though. Sorry. :( Why can't you just fix the colour by setting fixed := original? As I understand up to now, you want to take the values in the last three columns and compute something close to the first column. Perhaps the question is: What operations are we allowed to use for this?
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