User Ben Blum-Smith

2 votes

Questions on (subring/ submodule) of a graded (ring/ module)

answered Dec 11, 2015 at 23:16

2 votes

Ring of invariants of Klein Four group

answered Oct 8, 2015 at 20:31

2 votes

Accepted

Extending a character of an abelian group to an overgroup

answered Sep 13, 2015 at 0:37

2 votes

About the Hilbert basis theorem (number of basis polynomials)

answered Nov 9, 2015 at 23:03

2 votes

Accepted

Mean Value and what it says about behavior on functions on an interval

answered Dec 4, 2015 at 4:16

2 votes

Accepted

Is there any way to compress two or more numbers which I can get back without any errors?

answered Dec 21, 2017 at 13:13

2 votes

Accepted

Interpretation of the numerator of the Hilbert series?

answered Dec 26, 2017 at 2:55

2 votes

Accepted

Hyperdiscriminants of a polynomial over a ring

answered Feb 5, 2019 at 22:17

2 votes

Accepted

Realizing subring as ring of invariants?

answered Aug 14, 2018 at 16:57

2 votes

Accepted

Proof of Cauchy-Schwarz inequality?

answered Aug 15, 2018 at 15:10

2 votes

Endomorphism is normal and idempotent iff it is an orthogonal projection.

answered Jun 9, 2016 at 21:04

2 votes

Polynomials with $S_n \times \mathbb{Z}_2$ symmetry

answered Jun 27, 2017 at 2:11

2 votes

Discriminant formula issue

answered May 24, 2016 at 11:23

2 votes

Calculate the number of integers in a given interval that are coprime to a given integer

answered Jul 9, 2016 at 17:06

2 votes

Accepted

Understanding proof that no group of order $90$ is simple

answered Jun 19, 2017 at 23:04

2 votes

Proving that if $\vec{k}$ is a least solutionof $A\vec{x}=\vec{b}$, then $c\vec{k}$ is for $A\vec{x}=c\vec{b}$

answered Aug 4, 2011 at 13:16

2 votes

Extending a quotient map to a covering map on $\mathbb{RP}^2$

answered Apr 8, 2013 at 19:37

2 votes

Classifying Algebraic Structures as Fields

answered Apr 10, 2013 at 19:05

2 votes

Accepted

Burnside theorem?

answered Jan 20, 2012 at 11:27

2 votes

Subgroups of $\mathbb F_{p^n}$

answered Oct 25, 2014 at 6:06

2 votes

Accepted

Minimal normal subgroup that is not simple

answered Oct 25, 2014 at 15:24

2 votes

Accepted

If p and q are distinct prime numbers, it is true that we always have $p^{q-1}+q^{p-1} \equiv 1 \mod pq$?

answered Jun 16, 2014 at 21:44

2 votes

First isomorphim theorem $\phi(H) = HN/N$

answered Mar 25, 2014 at 23:31

2 votes

Accepted

Prove by induction that $3\mid n^3 - n$

answered Nov 11, 2013 at 17:39

2 votes

Accepted

Why is this relation reflexive?

answered Nov 14, 2013 at 23:15

2 votes

How is probability changed when an experiment is repeated?

answered Nov 20, 2013 at 3:04

2 votes

Show that $\alpha^2 + \alpha - 1$ is a zero divisor in $R$

answered Dec 23, 2013 at 13:12

1 vote

$f:U(\mathbb{Z}/(n)) \to Aut(G)$, defined by $f([s]_n) = \phi_s$ is surjective

answered Nov 2, 2013 at 3:26

1 vote

very basic calculus doubt

answered Nov 2, 2013 at 3:58

1 vote

Accepted

To show this $R$ is a PID

answered Nov 20, 2013 at 3:16

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170 Answers

Questions on (subring/ submodule) of a graded (ring/ module)

Ring of invariants of Klein Four group

Extending a character of an abelian group to an overgroup

About the Hilbert basis theorem (number of basis polynomials)

Mean Value and what it says about behavior on functions on an interval

Is there any way to compress two or more numbers which I can get back without any errors?

Interpretation of the numerator of the Hilbert series?

Hyperdiscriminants of a polynomial over a ring

Realizing subring as ring of invariants?

Proof of Cauchy-Schwarz inequality?

Endomorphism is normal and idempotent iff it is an orthogonal projection.

Polynomials with $S_n \times \mathbb{Z}_2$ symmetry

Discriminant formula issue

Calculate the number of integers in a given interval that are coprime to a given integer

Understanding proof that no group of order $90$ is simple

Proving that if $\vec{k}$ is a least solutionof $A\vec{x}=\vec{b}$, then $c\vec{k}$ is for $A\vec{x}=c\vec{b}$

Extending a quotient map to a covering map on $\mathbb{RP}^2$

Classifying Algebraic Structures as Fields

Burnside theorem?

Subgroups of $\mathbb F_{p^n}$

Minimal normal subgroup that is not simple

If p and q are distinct prime numbers, it is true that we always have $p^{q-1}+q^{p-1} \equiv 1 \mod pq$?

First isomorphim theorem $\phi(H) = HN/N$

Prove by induction that $3\mid n^3 - n$

Why is this relation reflexive?

How is probability changed when an experiment is repeated?

Show that $\alpha^2 + \alpha - 1$ is a zero divisor in $R$

$f:U(\mathbb{Z}/(n)) \to Aut(G)$, defined by $f([s]_n) = \phi_s$ is surjective

very basic calculus doubt

To show this $R$ is a PID