User P Vanchinathan

22 votes

Structures that turn out to exhibit a symmetry even though their definition doesn't

answered Mar 25, 2014 at 16:49

15 votes

Accepted

Why do we need random variables?

pr.probability soft-question big-list teaching

answered Oct 18, 2016 at 23:38

13 votes

Is there a "geometric" intuition underlying the notion of normal varieties?

ag.algebraic-geometry dg.differential-geometry ac.commutative-algebra

answered Dec 28, 2012 at 5:29

10 votes

At what point does number theory stop playing with finite rings?

nt.number-theory ho.history-overview ra.rings-and-algebras

answered Dec 10, 2012 at 4:28

10 votes

Is there a high-concept explanation for why characteristic 2 is special?

nt.number-theory big-picture characteristic-p

answered Dec 10, 2012 at 9:58

7 votes

Generating finite simple groups with $2$ elements

gr.group-theory co.combinatorics finite-groups

answered Apr 16, 2012 at 23:57

7 votes

The inverse Galois problem, what is it good for?

nt.number-theory galois-theory

answered Jan 12, 2013 at 6:31

6 votes

Does there exist a polar decomposition of matrices over finite fields?

finite-fields ag.algebraic-geometry

answered May 3, 2013 at 0:44

6 votes

Accepted

A question on orthogonal matrix

linear-algebra matrices matrix-theory orthogonal-matrices

answered Aug 29, 2016 at 2:32

5 votes

Cyclic extensions

galois-theory

answered Dec 12, 2012 at 8:16

4 votes

Non-rigorous reasoning in rigorous mathematics

soft-question big-list heuristics

answered Dec 5, 2012 at 0:24

4 votes

Accepted

Irreducible monic polynomials

nt.number-theory reference-request polynomials

answered May 20, 2016 at 13:53

4 votes

General bound for the number of subgroups of a finite group

gr.group-theory finite-groups

answered Jun 3, 2013 at 23:47

4 votes

Additive Subgroups of the Reals.

gr.group-theory

answered Jul 29, 2013 at 10:57

4 votes

Closed orbits of complete flags in $\mathbb{C}^n$

ag.algebraic-geometry rt.representation-theory flag-varieties

answered Mar 24, 2014 at 3:19

3 votes

Subfield of rational function field and which is not a rational function field

fields ag.algebraic-geometry

answered Mar 15, 2013 at 7:45

3 votes

3D Rotation Representation for Multiple Turns

quaternions

answered Mar 21, 2013 at 3:41

3 votes

Representation theory of infinite dihedral group

gr.group-theory rt.representation-theory

answered Aug 23, 2016 at 3:08

3 votes

What are examples of (collections of) papers which "close" a field?

reference-request soft-question ho.history-overview examples

answered Jul 6, 2021 at 6:35

2 votes

Infinitely many solutions to a particular embedding problem in Galois theory

nt.number-theory finite-groups algebraic-number-theory galois-theory galois-cohomology

answered Aug 16, 2016 at 2:09

2 votes

Decomposition of solvable Lie group

lie-groups solvable-groups

answered Mar 26, 2013 at 3:34

2 votes

Generate a higher degree symmetric polynomial from an existing one

co.combinatorics ag.algebraic-geometry invariant-theory

answered May 1, 2013 at 8:28

2 votes

Does every polynomial diophantine equation have solutions modulo p?

diophantine-equations modular-group

answered Jan 6, 2013 at 10:18

2 votes

What is the ideal corresponding to the Plücker embedding?

ag.algebraic-geometry projective-geometry grassmannians

answered Dec 13, 2012 at 8:36

2 votes

Intersecting Sets of Pythagorean Triples with Common Hypotenuses

nt.number-theory mg.metric-geometry triangles

answered Mar 13, 2014 at 8:11

2 votes

Conjecture on irrational algebraic numbers

algebraic-number-theory transcendental-number-theory irrational-numbers

answered Jul 6, 2014 at 9:12

1 vote

Irreducibility of cyclotomic polynomial over real quadratic number field

algebraic-number-theory

answered Feb 20, 2015 at 7:03

1 vote

Decomposition space of $\mathbb{C}$ by concentric circles

gn.general-topology

answered Apr 13, 2015 at 2:59

1 vote

Cyclotomic Polynomials in Combinatorics

co.combinatorics

answered Mar 22, 2014 at 14:33

1 vote

Duality for group variety

ag.algebraic-geometry algebraic-groups

answered Feb 20, 2014 at 3:15

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49 Answers

Structures that turn out to exhibit a symmetry even though their definition doesn't

Why do we need random variables?

Is there a "geometric" intuition underlying the notion of normal varieties?

At what point does number theory stop playing with finite rings?

Is there a high-concept explanation for why characteristic 2 is special?

Generating finite simple groups with $2$ elements

The inverse Galois problem, what is it good for?

Does there exist a polar decomposition of matrices over finite fields?

A question on orthogonal matrix

Cyclic extensions

Non-rigorous reasoning in rigorous mathematics

Irreducible monic polynomials

General bound for the number of subgroups of a finite group

Additive Subgroups of the Reals.

Closed orbits of complete flags in $\mathbb{C}^n$

Subfield of rational function field and which is not a rational function field

3D Rotation Representation for Multiple Turns

Representation theory of infinite dihedral group

What are examples of (collections of) papers which "close" a field?

Infinitely many solutions to a particular embedding problem in Galois theory

Decomposition of solvable Lie group

Generate a higher degree symmetric polynomial from an existing one

Does every polynomial diophantine equation have solutions modulo p?

What is the ideal corresponding to the Plücker embedding?

Intersecting Sets of Pythagorean Triples with Common Hypotenuses

Conjecture on irrational algebraic numbers

Irreducibility of cyclotomic polynomial over real quadratic number field

Decomposition space of $\mathbb{C}$ by concentric circles

Cyclotomic Polynomials in Combinatorics

Duality for group variety