Here are the closed questions tagged (at this date) with the deprecated abstract-algebra.

finite index, self-normalizing subgroup of $F_2$

Why do we not lose any generality by proving it only for finitely generated groups

(not closed but downvoted) https://mathoverflow.net/questions/225240/group-associated-to-the-monoid-cal-px-times-x-circ

Making idempotent element by a relation

How to solve this system of equations?

https://mathoverflow.net/questions/312934/how-to-show-the-set-operatornamehom-kl-bark-of-all-k-embeddings-of

Is the "algebraic closure" of the quaternions, finite dimensional?

Ring of a Spectral Space

Is there any construction of infinite dimensional algebraic division ring?

Polynomial constraints triggered by irreducibility

Does this solution guarantee $det(A)=0$ where $A\in M(R)$?

Is $K\cap \langle H\cup N\rangle‎\subseteq‎ \langle H\cup (K\cap N)\rangle$?

Properties of colon ideal

Diagonalize the simultaneous matrices and its background

Learning Algebra & Group Theory on my own

now deleted https://mathoverflow.net/questions/47534/unit-ideal-in-non-commutative-rings

now deleted https://mathoverflow.net/questions/157122/algebra-generated-by-a-tree-edit

now deleted https://mathoverflow.net/questions/127611/an-exercise-about-tor

now deleted https://mathoverflow.net/questions/266080/does-alexander-whitney-formula-imply-pythagoras-theorem

Here are the closed questions tagged (at this date) with the deprecated abstract-algebra.

finite index, self-normalizing subgroup of $F_2$

Why do we not lose any generality by proving it only for finitely generated groups

(not closed but downvoted) https://mathoverflow.net/questions/225240/group-associated-to-the-monoid-cal-px-times-x-circ

Making idempotent element by a relation

How to solve this system of equations?

https://mathoverflow.net/questions/312934/how-to-show-the-set-operatornamehom-kl-bark-of-all-k-embeddings-of

Is the "algebraic closure" of the quaternions, finite dimensional?

Is there any construction of infinite dimensional algebraic division ring?

Polynomial constraints triggered by irreducibility

Does this solution guarantee $det(A)=0$ where $A\in M(R)$?

Is $K\cap \langle H\cup N\rangle‎\subseteq‎ \langle H\cup (K\cap N)\rangle$?

Properties of colon ideal

Diagonalize the simultaneous matrices and its background

Learning Algebra & Group Theory on my own

now deleted https://mathoverflow.net/questions/47534/unit-ideal-in-non-commutative-rings

now deleted https://mathoverflow.net/questions/157122/algebra-generated-by-a-tree-edit

now deleted https://mathoverflow.net/questions/127611/an-exercise-about-tor

now deleted https://mathoverflow.net/questions/266080/does-alexander-whitney-formula-imply-pythagoras-theorem

Here are the closed questions tagged (at this date) with the deprecated abstract-algebra.

finite index, self-normalizing subgroup of $F_2$

https://mathoverflow.net/questions/47534/unit-ideal-in-non-commutative-rings

https://mathoverflow.net/questions/157122/algebra-generated-by-a-tree-edit

Why do we not lose any generality by proving it only for finitely generated groups

https://mathoverflow.net/questions/225240/group-associated-to-the-monoid-cal-px-times-x-circ

Making idempotent element by a relation

How to solve this system of equations?

https://mathoverflow.net/questions/127611/an-exercise-about-tor

https://mathoverflow.net/questions/312934/how-to-show-the-set-operatornamehom-kl-bark-of-all-k-embeddings-of

Is the "algebraic closure" of the quaternions, finite dimensional?

Ring of a Spectral Space

https://mathoverflow.net/questions/266080/does-alexander-whitney-formula-imply-pythagoras-theorem

Is there any construction of infinite dimensional algebraic division ring?

Polynomial constraints triggered by irreducibility

Does this solution guarantee $det(A)=0$ where $A\in M(R)$?

Is $K\cap \langle H\cup N\rangle‎\subseteq‎ \langle H\cup (K\cap N)\rangle$?

Properties of colon ideal

Diagonalize the simultaneous matrices and its background

Learning Algebra & Group Theory on my own

Here are the closed questions tagged (at this date) with the deprecated abstract-algebra.

finite index, self-normalizing subgroup of $F_2$

Why do we not lose any generality by proving it only for finitely generated groups

(not closed but downvoted) https://mathoverflow.net/questions/225240/group-associated-to-the-monoid-cal-px-times-x-circ

Making idempotent element by a relation

How to solve this system of equations?

https://mathoverflow.net/questions/312934/how-to-show-the-set-operatornamehom-kl-bark-of-all-k-embeddings-of

Is the "algebraic closure" of the quaternions, finite dimensional?

Ring of a Spectral Space

Is there any construction of infinite dimensional algebraic division ring?

Polynomial constraints triggered by irreducibility

Does this solution guarantee $det(A)=0$ where $A\in M(R)$?

Is $K\cap \langle H\cup N\rangle‎\subseteq‎ \langle H\cup (K\cap N)\rangle$?

Properties of colon ideal

Diagonalize the simultaneous matrices and its background

Learning Algebra & Group Theory on my own

now deleted https://mathoverflow.net/questions/47534/unit-ideal-in-non-commutative-rings

now deleted https://mathoverflow.net/questions/157122/algebra-generated-by-a-tree-edit

now deleted https://mathoverflow.net/questions/127611/an-exercise-about-tor

now deleted https://mathoverflow.net/questions/266080/does-alexander-whitney-formula-imply-pythagoras-theorem