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Nishant
  • Member for 10 years, 7 months
  • Last seen more than 2 years ago
21 votes
1 answer
42k views

Integrating $x^2e^{-x}$ using Feynman's trick? [duplicate]

16 votes
1 answer
2k views

Finite Subgroups of $GL_2(\mathbb Q)$

15 votes
1 answer
2k views

History of the terms "prime" and "irreducible" in Ring Theory.

14 votes
1 answer
4k views

Rings with noncommutative addition

11 votes
1 answer
3k views

Can vector spaces over different fields be isomorphic?

10 votes
3 answers
1k views

Direct Product of more than 2 Groups

10 votes
1 answer
724 views

Can only find 2 of the 4 groups of order 2014?

10 votes
2 answers
490 views

For which $n$ is it "feasible" to classify groups of order $n$?

10 votes
4 answers
1k views

Do we really need Choice to pick socks?

9 votes
2 answers
252 views

Functions $f$ such that $f(x)+f(-x)=f(x)f(-x)$

7 votes
0 answers
638 views

Solvability of Higher Degree Polynomials by Bring Radicals

7 votes
2 answers
2k views

Proving that tensoring a projective module with a flat module gives a projective module?

7 votes
2 answers
2k views

Showing that a Transitive Set of Transitive Sets is an Ordinal

7 votes
1 answer
1k views

Rings where every subgroup of the additive group is an ideal?

7 votes
1 answer
880 views

Inner Product on a Vector Space over a field besides $\mathbb R$ or $\mathbb C$?

6 votes
1 answer
4k views

Unique prime ideal implies every element is nilpotent or a unit.

6 votes
3 answers
7k views

Examples of Commutative Rings with $1$ that are not integral domains besides $\mathbb Z/n\mathbb Z$?

6 votes
1 answer
4k views

Proof of Dedekind's Theorem on the Galois Groups of rational polynomials

6 votes
1 answer
2k views

Quotient $M/M^2$ is finite dimensional over $R/M$ in local Noetherian ring?

6 votes
1 answer
430 views

How many tubes can you balance in a centrifuge?

6 votes
0 answers
577 views

Is every local ring the localization of some other ring?

5 votes
2 answers
2k views

In a path connected space, when does every path between $p$ and $q$ induce the same isomorphism between Fundamental Groups based at $p$ and $q$?

5 votes
1 answer
1k views

Can $\mathbb R$ be written as the disjoint union of (uncountably many) closed intervals?

5 votes
2 answers
80 views

Infinite closed subset of $S^1$ such that the squaring map is a bijection?

5 votes
1 answer
779 views

Ring with Unique Simple Module

5 votes
1 answer
127 views

Is every continuous function that preserves (ir)rationality a rational function?

5 votes
3 answers
451 views

Is every countable ordinal homeomorphic to a subspace of $\mathbb R$?

5 votes
2 answers
561 views

Does every set have a derangement? [duplicate]

5 votes
1 answer
763 views

Finite Group with Nilpotent Subgroup of Prime Power Index is Solvable

5 votes
1 answer
796 views

Discriminant of $x^3+px+q$.

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