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594393
bio website cs.smith.edu/~orourke
location Smith College, U.S.
age
visits member for 4 years, 6 months
seen 22 mins ago

Professor of Computer Science; Professor of Mathematics; Dean.


1d
comment How large can you draw an island on a map?
A notion of a fat region is used in computational geometry: e.g., On fat partitioning, fat covering etc.
2d
accepted A perfect $(n,k)$ shuffle function
2d
comment A perfect $(n,k)$ shuffle function
So for $k{=}4$ and $n{-}1=11$, $4^2 \equiv 5$, $4^3 \equiv 9$, $4^4 \equiv 3$, $4^5 \equiv 1$. So $f(12,4)=5$. Nice!
2d
awarded  ag.algebraic-geometry
2d
asked A perfect $(n,k)$ shuffle function
2d
awarded  Popular Question
2d
comment Calculating the “Belvedere Hull” of a Simple Planar Polygon
@ManfredWeis: I am aware that I didn't directly answer your question about the weakly visible hull. It may be in those references, either explicitly or implicitly.
Nov
21
revised Calculating the “Belvedere Hull” of a Simple Planar Polygon
3D citation
Nov
21
answered Calculating the “Belvedere Hull” of a Simple Planar Polygon
Nov
21
comment The view from inside of a mirrored tetrahedron
@Michael: I used Mathematica for the tetrahedron image.
Nov
21
accepted The view from inside of a mirrored tetrahedron
Nov
21
awarded  Nice Question
Nov
21
comment The view from inside of a mirrored tetrahedron
I assume the white lines are edges between faces?
Nov
21
comment The view from inside of a mirrored tetrahedron
Wow! Surprisingly complex and irregular.
Nov
21
comment The view from inside of a mirrored tetrahedron
Nice, Ryan!!! Try: global_settings { max_trace_level depth }. PovRay allows depth as large as $256$.
Nov
21
revised The view from inside of a mirrored tetrahedron
added 265 characters in body; edited tags
Nov
21
asked The view from inside of a mirrored tetrahedron
Nov
19
comment Robotics, Cryptography, and Genetics applications of Grothendieck's work?
@MarkGrant: Thanks, Mark, incorporated your correction.
Nov
19
revised Robotics, Cryptography, and Genetics applications of Grothendieck's work?
Mark Grant's comment incorporated.
Nov
19
comment Robotics, Cryptography, and Genetics applications of Grothendieck's work?
@LennartMeier: Definitely real robotics uses configuration spaces extensively, often via sampling. E.g., "Dynamic efficient collision checking method of robot arm paths in configuration space." But I do not know how much this type of work depends on topological considerations. So: good question.