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Rankeya
Grad student at U. Michigan.
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Top Questions
26
votes
Reference request for Geometric Group Theory
group-theory
reference-request
geometric-group-theory
asked Mar 1, 2012 at 6:41
math.stackexchange.com
24
votes
A question about the definition of a neighborhood in topology
general-topology
soft-question
asked Nov 7, 2011 at 23:20
math.stackexchange.com
17
votes
Monic (epi) natural transformations
algebraic-geometry
category-theory
asked Nov 16, 2011 at 3:58
math.stackexchange.com
16
votes
If $A$ is a Dedekind domain and $I \subset A$ a non-zero ideal, then every ideal of $A/I$ is principal.
commutative-algebra
dedekind-domain
asked Oct 14, 2011 at 4:24
math.stackexchange.com
15
votes
Localization at a prime ideal is a reduced ring
abstract-algebra
algebraic-geometry
commutative-algebra
asked Feb 21, 2012 at 4:53
math.stackexchange.com
14
votes
Connected components of a scheme are irreducible
algebraic-geometry
asked Mar 8, 2012 at 22:09
math.stackexchange.com
11
votes
Spectrum of a linear operator on a vector space of countable dim
linear-algebra
asked Oct 1, 2011 at 19:18
math.stackexchange.com
11
votes
Suggestions for further topics in Commutative Algebra
soft-question
commutative-algebra
asked Nov 2, 2011 at 22:09
math.stackexchange.com
10
votes
Epimorphisms of sheaves of sets
algebraic-geometry
asked Nov 20, 2011 at 7:04
math.stackexchange.com
9
votes
Two definitions of graded rings
abstract-algebra
ring-theory
definition
graded-rings
asked Nov 4, 2011 at 22:54
math.stackexchange.com
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Top Answers
30
Every ideal of an algebraic number field can be principal in a suitable finite extension field
math.stackexchange.com
23
A semigroup $X$ is a group iff for every $g\in X$, $\exists! x\in X$ such that $gxg = g$
math.stackexchange.com
18
Group as a category
math.stackexchange.com
18
Hartshorne Exercise II. 3.19 (c)
math.stackexchange.com
17
Preparations for reading Algebraic Number Theory by Serge Lang
math.stackexchange.com
16
In field ($F, +, \cdot$) , how can I prove $x^2 =1\implies x=1,-1$
math.stackexchange.com
16
$I+J=1 \Rightarrow I^k + J^{\ell} = 1$ [powers of coprime ideals are coprime]
math.stackexchange.com
15
Hartshorne Exercise II. 3.19 (b)
math.stackexchange.com
13
Why is $a^n - b^n$ divisible by $a-b$?
math.stackexchange.com
10
How many elements in a number field of a given norm?
math.stackexchange.com
10
Number of ideals of a PID modulo an ideal
math.stackexchange.com
9
Homotopic Topology by Fukes, Fomenko, Gutenmacher
math.stackexchange.com
8
A question about a proof of a weak form of Hilbert's Nullstellensatz
math.stackexchange.com
8
Connected components of a scheme are irreducible
math.stackexchange.com
8
Quotient ring of a localization of a ring
math.stackexchange.com
8
$xy\in (x^2,y^2)$ if $R$ is a Dedekind domain
math.stackexchange.com
7
How can I explain the seven Millennium Prize Problems to a layman?
math.stackexchange.com
7
Looking for a Calculus Textbook
math.stackexchange.com
7
A question about the definition of a neighborhood in topology
math.stackexchange.com
7
When does a polynomial generate a radical ideal?
math.stackexchange.com
7
Quick way to show a finite field always has prime power order?
math.stackexchange.com
7
Isomorphism of two field extensions
math.stackexchange.com
7
Localization at Maximal Ideals
math.stackexchange.com
7
Fast paced book in point-set topology to move on to algebraic topology
math.stackexchange.com
7
If a finite group acts transitively on a set, does its center also acts transitively?
math.stackexchange.com
6
Are the p-adic integers the ring of integers of the field of p-adic numbers?
math.stackexchange.com
6
Prove by induction: $2^n + 3^n -5^n$ is divisible by $3$
math.stackexchange.com
6
How to Improve Mathematical Thinking and General Problem Solving Skills?
math.stackexchange.com
6
$\mathbb A^n(k)$ and $\mathbb A^n(k)\setminus \{0\}$ are not homeomorphic
math.stackexchange.com
6
Does the ring of global sections functor on the category of locally ringed spaces have an adjoint functor?
math.stackexchange.com
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