14,481 reputation
12454
bio website math.brown.edu/~ysolomon
location Providence, RI
age
visits member for 4 years, 2 months
seen 29 mins ago

Second-year graduate student at Brown University. Interested in low-dimensional geometry and geometric topology, e.g. Teichmuller theory, Hyperbolic 3-Manifolds, Moduli spaces.


8h
answered Can we define a binary operation on $\mathbb Z$ to make it a vector space over $\mathbb Q$?
Oct
13
answered Borel Sets which are not intervals
Oct
4
comment CWM book,ends,category theory,natural transformation
Can you format this please?
Oct
4
answered If a function integrates to zero against every even function, then it is odd
Sep
30
awarded  Nice Question
Sep
30
awarded  Explainer
Sep
29
comment Equivalence between orientation of the tangent bundle and orientation of manifolds
What is your definition of orientable?
Sep
27
revised Is the product of two non-holomorphic function always non-holomorphic?
added 3 characters in body; edited title
Sep
25
comment Definition of a metric space: why $E\times E\rightarrow\mathbb{R}$?
No, the input is four real numbers $x_1,x_2,y_1,y_2$. The output is a single real number.
Sep
25
comment Definition of a metric space: why $E\times E\rightarrow\mathbb{R}$?
This is in line with my explanation. You take the distance from $(x_1,y_1)$ to $(x_2,y_2)$. These two inputs have a total of $4$ pieces of information, $x_1,x_2,y_1,y_2$, which you can think of as an element of $\mathbb{R}^4$ if you want.
Sep
25
answered Definition of a metric space: why $E\times E\rightarrow\mathbb{R}$?
Sep
24
awarded  Autobiographer
Sep
21
comment Can we say “commutative ring = field”?
Great example !
Sep
19
answered Show that every element in class $\mathcal{K}$ have at most $n$ elements
Sep
18
comment Notion of a distribution as acting on tangent spaces
Reference added.
Sep
18
revised Notion of a distribution as acting on tangent spaces
added 301 characters in body
Sep
18
comment Find all complex and real roots of higher degree polynomials, given one root
Hint: If you know one more root, you can divide out and then obtain a quadratic, whose roots are solved for by the quadratic equation. Remember that complex roots come in pairs...
Sep
17
asked Notion of a distribution as acting on tangent spaces
Sep
16
revised What does it really mean when we say that the probability of something is zero?
deleted 6 characters in body
Sep
15
answered What does it really mean when we say that the probability of something is zero?