Reputation
1,400
Next privilege 2,000 Rep.
10 32
Impact
~27k people reached

 Sep20 comment Sequence of convex functions @LVK Why are we not considering infinity? Why only real values? Sep16 comment Examples of a strongly continuous function and a weakly continuous function. Welcome to math.SE: since you are new, I wanted to let you know a few things about the site. In order to get the best possible answers, it is helpful if you say in what context you encountered the problem, and what your thoughts on it are; this will prevent people from telling you things you already know, and help them give their answers at the right level. If this is homework, please add the homework tag; people will still help, so don't worry. Sep12 comment Is there a mathematical symbol for unknown? We must know what we are talking about. That is by definition we must be able to express it. Else, we do not talk about the quantities we don't know. However, some things can be expressed in a limited way, and yet cannot be evaluated. For example, we do not talk about infinite sums, we only talk about limits of infinite sums. So, what is the sum of an infinte series? We say we can not evaluate it, however, if you take so and so many finite terms, the series will be withing this range of the "limit". In that case, then we can use $x = \lim_{n \rightarrow \infty} \sum a_{n}$ Sep11 comment Dividing open domains in $\mathbb R^2$ in parts of equal area Okay, thanks. I am just learning the stuff, and hence I am sometimes unsure of the connection between theorems. Sep11 comment Dividing open domains in $\mathbb R^2$ in parts of equal area @t.b. Why did you call the ham sandiwch theorem a variant? Isn't it a more general case of the above theorem? Or is there some difference I am missing? Sep8 comment How many circles are needed to cover a rectangle? @NachiketKarnick I would like to invite you to a chat. I have some questions concerning admission tests to various institutes. Let me know if you are open to the idea. Thanks. Sep7 comment A problem on separable space @Matt I guess the two questions are almost equivalent and so this must be closed as the duplicate of the other one. Or maybe the fact that this questions explicitly asks for the theorem in a separable space can make it a different enough question in which case, we might let it remain? Sep2 comment Inverse Laplace transform - using the table Some MSE users tried to improve your post using TeX (for better readability). Please check whether these edits did not unintentionally change the meaning of your post. Sep2 comment Inverse Laplace transform - using the table For some basic information about writing math at this site see e.g. here, here, here and here. Sep1 comment If $a$, $a+2$ and $a+4$ are prime numbers then, how can one prove that there is only one solution for $a$? On the border of begin outrageous, good comments!! Aug29 comment ordered field and isomorphism @vidyaojal if you have not completely understood an answer, it is perfectly acceptable to not accept an answer till you are completely comfortable. Aug27 comment How to strictly mathematically prove that definition is wrong? You have to find out that part of the definition that is not consistent with the conclusion we can make using it and some other facts we already know are true. For example, in your case, the second condition of the definition is falsely assumed I think. Aug25 comment how can one solve for $x$, $x =\sqrt{2+\sqrt{2+\sqrt{2\cdots }}}$ What can you say about $x^2$? Aug24 comment Continuous solutions of $f(x) = \lambda \int_0^{\pi/2} \cos({x-y)}f(y)\,dy$ Differentiate twice under the integral sign. Aug24 comment Approximation of elements in arithmetic progressions by logarithms of integers @EinarRødland Ohh, I see. So basically I duplicated your answer. Let it stay here though, I find it easier to understand my formulation, I will correct the answer though to reflect the nature of approximation and delete the $e^{-n^2}$ part. I guess that would be correct right? Aug24 comment Approximation of elements in arithmetic progressions by logarithms of integers @AntonioVargas You say you want to investigate the behaviour of the function $\left|\left(1-e^{i c \log n}\right)g(n)\right|^{1/n}$. Would it be possible to know exactly what characteristics are you concerned with? For example, $\log 4$ is almost $\pi/2$ and $\log 23$ is almost $\pi$. I guess you want to know how many $n$ are there such that the term $c \log n$ is approximately equal to some angle $\phi + 2k\pi$ . Is this correct? Aug17 comment Ways to define a curve Are your bodies getting deformed? Aug14 comment Proving that $\mu$ is $\sup S$ @jmi4 sorry, my bad, I deleted the comment. Aug9 comment How many circles are needed to cover a rectangle? I must say I like the analysis. Aug8 comment How many circles are needed to cover a rectangle? @mixedmath Yup half-scale rectangle puts the point better.