Grumpy Parsnip

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10,411 reputation

21451

bio	website	math.utk.edu/~jconant
	location	Knoxville, TN
	age	38
visits	member for	2 years, 8 months
	seen	4 hours ago
stats	profile views	2,014

I like low-dimensional topology and geometric group theory. I'm particularly drawn to problems that involve algebraic spaces of graphs, such as graph homology.

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236 Answers

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32	Are male and female body topologically equivalent
17	Function which is continuous everywhere in its domain, but differentiable only at one point
15	Number of ways to partition a rectangle into n sub-rectangles
14	Why is the Jordan Curve Theorem not “obvious”?
13	Is there “essentially only 1” Jordan arc in the plane?

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10,411 Reputation

+10	Compact manifolds and orientability
+10	Dual graph: Simple example
+15	Rôle of smooth structure
+10	subsets of ${R}^2$ of which no 2 are homeomorphic

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10 Questions

votes activity newest

48	Does $X\times S^1\cong Y\times S^1$ imply that $X\times\mathbb R\cong Y\times\mathbb R$?
21	Are the rationals minus a point homeomorphic to the rationals?
14	Why do all compact connected surfaces have a triangulation?
11	Is there a definite integral for which the Riemann sum can be calculated but for which there is no closed-form antiderivative?
10	Do discontinuous harmonic functions exist?

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113 Tags

249 algebraic-topology × 76	55 soft-question × 9
202 general-topology × 60	46 group-theory × 12
63 geometry × 20	38 geometric-topology × 7
59 manifolds × 13	36 knot-theory × 15
57 differential-geometry × 12	35 reference-request × 9

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2 Accounts

$Mathematics Stack Exchange$	Mathematics	10,411 rep	21451
	MathOverflow	2,259 rep	1728

40 Badges

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Custodian × 4	Caucus × 3
Revival × 4	Nice Answer × 11
Electorate	Yearling × 2
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Nice Question × 5	Good Answer

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1,750 Votes Cast

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