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User:David Eppstein

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I'm a computer science professor at UC Irvine, in Orange County, California. See my home page or blog or even my Wikipedia article for more about me.

Much of my Wikipedia editing is on mathematics articles, but I've also edited articles on computer science, academic biography, the arts, and California geography. I've also contributed many diagrams and photographs to Wikipedia and Wikimedia Commons.

As an employee of a public university I believe that public outreach is part of my job description, and in that sense that my edits here to subjects within my professional expertise are paid edits. However, the topics and content of my editing here are wide-ranging and entirely self-directed. I neither participate in, nor condone, paid edits for specific articles or specific content.

Wikibooks[edit]

Graph Algorithms
Cube-maximal-independence.svg
Graph Drawing
3-crossing Heawood graph.svg
Fundamental Data Structures
Cartesian tree.svg
Matroid Theory
Möbius–Kantor configuration symmetric.svg
Perfect Graphs
Turan 13-4.svg

Did you know?[edit]

  • ... that a play by Babette Hughes was performed in 1938 by six blind actresses? (17.06)
  • ... that Anne Penfold Street, one of Australia's leading mathematicians, earned bachelor's and master's degrees in chemistry before switching to mathematics? (17.05)
  • ... that mathematician Donald G. Saari advocates deciding elections by the Borda count instead of plurality voting, because it leads less often to paradoxical outcomes? (17.05)
  • HarryRLewis Harvard demonstrating SHAPESHIFTER 1967or1968.jpg
    ... that the website "Six Degrees to Harry Lewis" (Lewis pictured) was a precursor to Facebook? (17.04)
  • ... that erection engineer Mark Barr had a business making rubbers, said bicycles stimulated ball development, and was elected to the screw committee? (17.04)
  • ... that Thomas North Whitehead suggested that England give America one of the four surviving copies of the Magna Carta to win support for Lend-Lease? (17.03)
  • Br2-anim.gif
    ... that a Bricard octahedron (pictured) can change its shape without changing the shapes of its faces? (17.03)
  • ... that Euclidean space can be completely filled without overlaps by copies of any plesiohedron, a type of convex shape whose known examples have up to 38 sides? (17.03)
  • ... that it is unknown whether the Dehn invariant of a flexible polyhedron stays invariant as it flexes? (17.03)
  • ... that Kokichi Sugihara's illusions make marbles appear to roll uphill and circular pipes look rectangular? (17.03)
  • Penny graph.jpg
    ... that, no matter how n non-overlapping pennies are arranged on a table, at least 0.258n of them will not touch each other? (17.03)

...and many more

Spiky things[edit]

See also[edit]

Boxicity[edit]

E-to-the-i-pi.svg This user is a member of WikiProject Mathematics.
CS This user is a member of WikiProject Computer science.
Sciences humaines.svg This user teaches at a university or other institution of higher education.
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Wikipedia-logo.png This user has been a member of Wikipedia since August 2006.
they This user considers singular they standard English usage.
, This user fixes comma splices. They are annoying.
OC This user lives in Orange County, California.