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Xodarap
  • Member for 13 years, 8 months
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35 votes
2 answers
3k views

Rubik’s Cube Not a Group?

27 votes
2 answers
4k views

Why do we use this definition of "algebraic integer"?

16 votes
3 answers
16k views

Proof of the polynomial division algorithm

15 votes
3 answers
3k views

Order of some quotient ring of Gaussian integers [duplicate]

14 votes
5 answers
10k views

What does it mean to do MLE with a continuous variable

12 votes
3 answers
3k views

$F[x]/(x^2)\cong F[x]/(x^2 - 1)$ if and only if F has characteristic 2

11 votes
2 answers
2k views

Are all multiplicative functions additive?

11 votes
1 answer
1k views

Does Newton's method for inverting a series work?

11 votes
4 answers
4k views

What are the generators of $(\mathbb{R},+)$?

11 votes
3 answers
916 views

Reverse Polish notation in (abstract) algebra

9 votes
1 answer
408 views

How do Mathematicians send email? [closed]

8 votes
2 answers
480 views

Existence of a utility function on the reals

8 votes
3 answers
2k views

Embedding torsion-free abelian groups into $\mathbb Q^n$?

8 votes
3 answers
2k views

Why is "glide symmetry" its own type?

8 votes
3 answers
427 views

"Great Theorems" references

8 votes
2 answers
475 views

Countability of irrationals

7 votes
2 answers
3k views

"Commutative" functions

7 votes
1 answer
788 views

Is there a division algorithm for any Euclidean Domain?

7 votes
2 answers
953 views

RACs can solve the halting problem?

7 votes
3 answers
320 views

A simple question about Galois groups

7 votes
2 answers
750 views

Theoretical basis for overfitting

7 votes
1 answer
2k views

Name of "De Moivre's equation"

6 votes
2 answers
1k views

Cauchy's functional equation for $\mathbb R^n$

6 votes
2 answers
2k views

Faithful representation implies group is cyclic

6 votes
1 answer
324 views

Turning preorders into partial orders

6 votes
1 answer
2k views

What is a subdirect product?

6 votes
1 answer
220 views

Generalization of Cauchy's functional equation

6 votes
3 answers
4k views

Are there (finite) field extensions which aren't Galois?

5 votes
1 answer
176 views

Recursively defined systems are always consistent?

5 votes
1 answer
680 views

Degree of a field extension when compared to the Galois group