Tom Oldfield

4,085 reputation

524

bio	website
	location
	age
visits	member for	6 months
	seen	4 hours ago
stats	profile views	280

I am currently an undergraduate maths student at Cambridge University, England.

I aim to answer what questions I can, understand some of those that I can't and improve the site however I can!

	4,085 reputation	bio	website		visits	member for	6 months
524 badges		location			seen	4 hours ago

summary answers questions tags badges favorites bounties reputation activity

703 Actions

suggestions reviews revisions comments badges posts accepts all

5h	reviewed	Close Product topology question
5h	reviewed	Reviewed Check existence of cycle in graph with only number of vertices and their degree
6h	reviewed	Leave Open Is the value of $\pi$ in 2d the same in 3d?
8h	reviewed	No Action Needed decomposition of products of monomial symmeric polynomials into sums of them
8h	comment	Area of a circle is $A = \pi r^2$. Is it possible that both $A$ and $r$ are perfect integers. @Asaf I suppose, I wrote it up as one at first but I didn't feel like I had put enough work into it to make it an answer! I was sure that someone else would point out the exact same thing (and I hate it when some questions receive many almost identical answers). If no-one did I would have changed it into an answer at some point for completeness.
10h	reviewed	Looks Good The population of a certain bacteria can multiply threefold in 24 hours. If there are 500 bacteria now, how many will there be in 96 hours?
10h	reviewed	No Action Needed Why is [-2,0] not listed as a generator of the elliptic curve 389a1
11h	comment	Area of a circle is $A = \pi r^2$. Is it possible that both $A$ and $r$ are perfect integers. No, if that were true then $r^2$ would be an integer and then $\pi=\frac{A}{r^2}$ would be rational, which it isn't.
11h	answered	Prove that if $G$ is abelian, then $H = \{a \in G \mid a^2 = e\}$ is subgroup of $G$
11h	reviewed	Close Last non zero digit of $n!$
12h	reviewed	Leave Open For what $p$ is $x^p$ Lebesgue Integrable?
12h	reviewed	Leave Open Way to have inutition about the shape of a curve?
12h	reviewed	Close How to show that there exists a scalar $\lambda$ so that $A = \lambda I$?
13h	reviewed	Close Finding the values of $\cos \frac{n\pi}{2}$ and $\sin \frac{n\pi}{2}$.
16h	reviewed	Close If $\sum a_n $ is a positive series that diverges, does $\sum \frac{a_n}{1+a_n}$ diverge?
17h	reviewed	Leave Open Series of Fractional Sums
17h	awarded	Cleanup
17h	reviewed	Leave Open A question about an inequality
17h	comment	What is required for Mathematics to give us new results? @pbs Please don't remove all content from the question. Although I appreciate that it is "your" question, the reason we close questions rather than delete them immediately is to allow the possibility for them to be edited into something that is a valid question and can receive good answers.
17h	revised	What is required for Mathematics to give us new results? rolled back to a previous revision