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Answers (139)

Votes Activity Newest

57	Two metrics induce the same topology, but one is complete and the other isn't
38	Idempotents in a local ring
27	Irreducibility of $f(x)=x^4+3x^3-9x^2+7x+27$
27	How to understand compactness?
16	Is addition continuous?

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Reputation (7,430)

+20	Idempotents in a local ring
+10	Two metrics induce the same topology, but one is complete and the other isn't
+10	a nonmeasurable set $E$ of finite measure and a $G_{\delta}$ set $G$ that contains $E$
+10	Why do elementary matrix operations not affect the row space of a given matrix?

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Questions (12)

Votes Activity Newest

6	almost n-th power in a field
6	Can disjoint triangles be separated by one of the lines they define?
4	Galois action on central simple algebras
3	Norm-Euclidean fields
3	Discriminant of $\mathbb{Z}[a,b]$

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Tags (128)

157 abstract-algebra × 46	57 complete-spaces
126 general-topology × 11	55 commutative-algebra × 6
80 ring-theory × 11	52 linear-algebra × 21
61 examples-counterexamples × 2	45 polynomials × 10
58 metric-spaces × 3	44 ideals × 3

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Bookmarks (12)

Votes Activity Newest Views Added

26	Expressing a root of a polynomial as a rational function of another root
25	Is there a function with this property?
25	Prove that $\lfloor \sqrt{p} \rfloor + \lfloor \sqrt{2p} \rfloor +…+ \lfloor \sqrt{\frac{p-1}{4}p} \rfloor = \frac{p^2 - 1}{12}$
12	Almost identical map
12	Two seemingly unrelated puzzles have very similar solutions; what's the connection?

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	Mathematics	7,430 rep	1 gold badge24 silver badges36 bronze badges
	MathOverflow	243 rep	1 silver badge8 bronze badges
	Stack Overflow	131 rep	5 bronze badges
	Academia	101 rep	2 bronze badges

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Nice Answer × 14	Suffrage
Yearling × 10	Vox Populi
Good Answer × 4	Critic
Enlightened × 7	Excavator
Guru	abstract-algebra

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Votes cast (220)

all time			by type
218	up		118	question
2	down		102	answer

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