3,276 reputation
829
bio website tc.columbia.edu/academics/…
location New York
age 28
visits member for 1 year, 8 months
seen 19 hours ago

Benjamin Dickman is from Brookline, MA. After graduating from Amherst College, Dickman spent the following academic year in Nanjing, China, on a Fulbright Grant to study High School Mathematics Education. He returned to his host institution of Nanjing Normal University the following year on a Chinese government grant for Mandarin studies, and spent his free time becoming fluent in the Nanjing dialect. An avid Boggle player, Dickman is currently a National Science Foundation Graduate Fellow at Columbia University, pursuing his PhD in Mathematics Education.

Have you solved any of my puzzles? If so, send me an email!
Email: bmd2118[at]colunbia.edu. (Change n to m.)


Mar
28
comment Twin primes satisfy the congruence?
@madfellow Right; see edit.
Mar
28
revised Twin primes satisfy the congruence?
added 150 characters in body
Mar
28
comment How to get the garage to work. (parking functions)
+1 for a proof by Pollak!
Mar
24
revised Proving a certain map on the closed unit disc must be the identity
post bounty edit
Mar
24
revised Open problems involving p-adic numbers
more precise statement of various conjectures...
Mar
23
answered Open problems involving p-adic numbers
Mar
18
revised Proving a certain map on the closed unit disc must be the identity
added 37 characters in body
Mar
17
comment Sequences in infinite series
Are you allowed to ask for outside help (e.g. the post here) on this problem? It looks like homework that you're graded on ("You can earn partial credit on this problem").
Mar
17
answered Are all infinite sets equivalent by an indexing function?
Mar
15
revised Proving a certain map on the closed unit disc must be the identity
shouldn't say 'none of the answers is acceptable' since new answers can be posted...
Mar
15
revised Proving a certain map on the closed unit disc must be the identity
bumping
Mar
12
revised Probability that a stick randomly broken in five places can form a tetrahedron
no longer bountied
Mar
12
awarded  Notable Question
Mar
12
revised Proving a certain map on the closed unit disc must be the identity
added 26 characters in body
Mar
12
comment What is a continuous real valued function on the unit circle?
How about $g(x) = 0$ for all $x$?
Mar
2
comment Sums and differences of distinct factors
The more general sequence does not even exist for all $n \in \mathbb{N}$. As a simple example, any prime $\rho$ will not have four distinct factors, so the constraints cannot be satisfied as they are currently written.
Feb
27
revised Sums and differences of distinct factors
Added conditions into extension
Feb
27
comment Why would $[0,1) \times \eta$ (with lexicographic order topology) not be a manifold for $\eta > \omega_1$?
I believe this is addressed in the wikipage's talk page: en.wikipedia.org/wiki/Talk%3ALong_line_%28topology%29#Question
Feb
26
comment Nilpotent elements in a commutative ring
@terribleatmath The binomial formula gives exactly the coefficients $c_i$ described in my response above (and also found in Pascal's triangle). Try computing $(a+b)^{k}$ for small values of $k$ and read through my answer slowly...
Feb
26
comment Evaluate $\int_0^{\pi/2}\log\cos(x)dx$
@RecklessReckoner The anti-derivative needn't be found for this particular problem. The answer ought to be $-\pi \log(2)/2$, but I suspect it has been asked here (or elsewhere) before...