Joseph O'Rourke

Northampton, MA

cs.smith.edu/~orourke

Professor of Computer Science, Professor of Mathematics

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Fekete's conjecture on repeated applications of the tangent function

reference-request trigonometry dynamical-systems asked Oct 14 '10 at 15:49

math.stackexchange.com

28 votes

Why are there only a finite number of sporadic simple groups?

group-theory simple-groups asked Aug 14 '10 at 0:45

math.stackexchange.com

27 votes

Optimal yarn balls

geometry asked Nov 9 '10 at 0:38

math.stackexchange.com

24 votes

Ellipse 3-partition: same area and perimeter

geometry partitions asked Aug 8 '11 at 11:43

math.stackexchange.com

24 votes

Truly random number generator: Turing computable?

reference-request computability turing-machines randomness asked Sep 13 '10 at 17:35

cstheory.stackexchange.com

22 votes

If P=NP, could we obtain proofs of Goldbach's Conjecture etc.?

cc.complexity-theory proof-complexity automated-theorem-proving proof-search asked Nov 8 '10 at 19:50

cstheory.stackexchange.com

21 votes

Why is this coin-flipping probability problem unsolved?

probability probability-theory asked Oct 6 '10 at 12:43

math.stackexchange.com

20 votes

Manipulate with a variable number of sliders

manipulate asked Feb 2 '12 at 19:18

mathematica.stackexchange.com

19 votes

Meaning of backtick in floating-point literal

numerics syntax arbitrary-precision machine-precision asked Mar 14 '12 at 0:28

mathematica.stackexchange.com

18 votes

Computing the Cheeger constant: feasible for which classes?

ds.algorithms reference-request graph-algorithms asked Oct 14 '11 at 0:48

cstheory.stackexchange.com

Top Answers

Is there any easy way to understand the definition of Gaussian Curvature?

math.stackexchange.com

What hexahedra have faces with areas of exactly 1, 2, 3, 4, 5, and 6 units?

math.stackexchange.com

Why is this coin-flipping probability problem unsolved?

math.stackexchange.com

famous space curves in geometry history?

math.stackexchange.com

find the smallest containing convex polygon with a given number of points

stackoverflow.com

Algorithms for Nash equilibrium computation.

cstheory.stackexchange.com

Visual research problems in geometry

math.stackexchange.com

You are standing at the origin of an “infinite forest” holding an “infinite bb-gun”

math.stackexchange.com

Density of randomly packing a box

math.stackexchange.com

What is the expected area of a polygon whose vertices lie on a circle?

math.stackexchange.com

Algorithms from the Book.

cstheory.stackexchange.com

How are the Voronoi Tesselation and Delaunay triangulation problems duals of each other?

scicomp.stackexchange.com

Finding upper segments of intersecting parabolas

math.stackexchange.com

Geometry of nose in and nose out parking in parking lots

math.stackexchange.com

What are curves (generalized ellipses) with more than two focal points called and how do they look like?

math.stackexchange.com

Triangulation of polygon

stackoverflow.com

Sublinear but simple Dynamic Convex Hull algorithm?

stackoverflow.com

What is a really good problem to get your hands dirty in computational-geometry?

cstheory.stackexchange.com

Which unfolding of an icosahedron has the least number of edges to be glued?

math.stackexchange.com

What’s the best way to test if a sphere is a polytope? (the Simplicial Steinitz Problem)

cstheory.stackexchange.com

Menagerie of polygons

cstheory.stackexchange.com

Menagerie of polygons

cstheory.stackexchange.com

Find all points with a distance less than d to a (potentially not convex) polygon

math.stackexchange.com

point below a plane

math.stackexchange.com

3D picture of the 38-sided Engel space-filling polyhedron

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Tranforming 2D outline into 3D plane

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Decomposing a circle into similar pieces

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Computational geometry, tetrahedron signed volume

stackoverflow.com

Complexity of hidden polygon puzzle on square grids?

cstheory.stackexchange.com

Art gallery variants with pairwise visibility?

cstheory.stackexchange.com