Sigur

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2,740 reputation

420

bio	website
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	age	32
visits	member for	1 year
	seen	yesterday
stats	profile views	369

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96 Answers

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10	How do I find the area of this region?
10	Is the area of intersection of convex polygons always convex?
8	If the diagram is commutative, $f$ is one-one and $g$ is onto.
6	real matrix fails to have an eigenvalue
5	What is $-i$ exactly?

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2,740 Reputation

+25	Why to obtain the coordinates of vectors in the basis that themselves belong?
+50	What is $-i$ exactly?
+10	Defining a subset
+10	Rings \| Homomorphisms \| Units

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20 Questions

votes activity newest

19	Homeomorphism preserving distance
7	If $X$ is a connected subset of a connected space $M$ then the complement of a component of $M \setminus X$ is connected
6	Is $x^4+4$ an irreducible polynomial?
6	Consecutive non square free numbers
5	What function has a graph that looks like this?

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83 Tags

37 geometry × 10	11 euclidean-geometry × 4
30 homework × 20	11 analytic-geometry × 2
27 linear-algebra × 16	10 algebraic-geometry
17 elementary-set-theory × 8	9 general-topology × 11
12 abstract-algebra × 8	9 algebraic-topology × 8

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9 Accounts

$TeX - LaTeX Stack Exchange$	TeX - LaTeX	3,678 rep	621
$Mathematics Stack Exchange$	Mathematics	2,740 rep	420
	Unix & Linux	451 rep	211
	Area 51	216 rep	4
	Stack Overflow	106 rep	2

19 Badges

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Constituent	Strunk & White
Yearling	Quorum
Caucus	Citizen Patrol
Nice Answer × 2	Organizer
Custodian × 5	Enthusiast

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282 Votes Cast

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