About me
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, among many other topics. 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
Click on the titles, not on the cover images!
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Did you know?
- ... that Ellaisa Marquis has been called the "marquis player" of women's football in Saint Lucia? (22.07)
- ... that a folded paper lantern shows that certain mathematical definitions of surface area are incorrect? (22.06)
- ... that although the problem of squaring the circle with compass and straightedge goes back to Greek mathematics, it was not proven impossible until 1882? (22.06)
- ... that the recycling symbol (pictured) depicts a Möbius strip? (22.05)
- ... that the first player can win a game of Fibonacci nim unless it starts with a Fibonacci number of coins? (22.03)
- ... that although the Kepler triangle has similar proportions to the Great Pyramid of Giza, the triangle's connection to the golden ratio makes it unlikely to have been used in ancient Egypt? (22.03)
- ... that the mathematical infinity symbol ∞ may be derived from the Roman numerals for 1000 or for 100 million? (22.03)
Good articles
- Alexandrov's uniqueness theorem – Polyhedra are determined by surface distance
- antiparallelogram – Polygon with four crossed edges of two lengths
- Mark Barr – English-American inventor and polymath
- binary logarithm – Exponent of a power of two
- book embedding – Graph layout on multiple half-planes
- Borromean rings – Three linked but pairwise separated rings
- bucket queue – Data structure for integer priorities
- Cairo pentagonal tiling – Tiling of the plane by pentagons
- clique problem – Task of computing complete subgraphs
- component (graph theory) – Maximal subgraph whose vertices can reach each other
- constructible number – Number constructible via compass and straightedge
- convex hull – Smallest convex set containing a given set
- cop-win graph – Type of graph related to pursuit–evasion
- curve of constant width – Shape with width independent of orientation
- curve-shortening flow – Motion of a curve based on its curvature
- De Bruijn–Erdős theorem (graph theory) – Theorem on coloring infinite graphs
- De quinque corporibus regularibus – 15th century book on polyhedra
- directed acyclic graph – Directed graph with no directed cycles
- double bubble theorem – On smallest-area enclosure of two volumes
- dual graph – Graph representing faces of another graph
- dyadic rational – Fraction with denominator a power of two
- Erdős–Straus conjecture – Problem on sums of unit fractions
- Euclid–Euler theorem – Characterization of even perfect numbers
- Euclidean distance – Length of a line segment
- factorial – Product of numbers from 1 to n
- farthest-first traversal – Sequence of points far from previous points
- feedback arc set – Edges that hit all cycles in a graph
- Fermat's right triangle theorem – Rational right triangles cannot have square area
- Fibonacci nim – Game of taking coins from a pile
- free abelian group – Algebra of formal sums
- Garden of Eden (cellular automaton) – Pattern that has no predecessors
- Andrew M. Gleason – American mathematician and educator
- Ronald Graham – American mathematician
- Halin graph – Mathematical tree with cycle through leaves
- handshaking lemma – Every graph has evenly many odd vertices
- harmonic series (mathematics) – Divergent sum of all positive unit fractions
- Heilbronn triangle problem – On point sets with no small-area triangles
- C. Doris Hellman – American historian of science
- ideal polyhedron – Type of polyhedron in hyperbolic geometry
- infinity symbol – Mathematical symbol, "∞"
- integer sorting – Computational task of sorting whole numbers
- isosceles triangle – Triangle with at least two sides congruent
- Vojtěch Jarník – Czech mathematician
- Jessen's icosahedron – Right-angled non-convex polyhedron
- Kawasaki's theorem – Description of flat one-vertex origami
- Keller's conjecture – Geometry problem on tiling by hypercubes
- Kepler triangle – Right triangle related to the golden ratio
- Harry R. Lewis – American computer scientist
- linear probing – Computer programming method for hashing
- Malfatti circles – Three tangent circles in a triangle
- Möbius strip – Non-orientable surface with one edge
- nearest-neighbor chain algorithm – Stack-based method for clustering
- no-three-in-line problem – Geometry problem on grid points
- opaque set – Shape that blocks all lines of sight
- Pick's theorem – Formula for area of a grid polygon
- prime number – Number whose only smaller divisor is 1
- Prince Rupert's cube – Cube that fits through hole in smaller cube
- pseudoforest – Graph with one cycle per component
- Pythagorean tiling – Tiling by squares of two sizes
- quadrisecant – Line through four points of a curve
- Rado graph – Infinite graph containing all countable graphs
- regular number – Numbers that evenly divide powers of 60
- Reuleaux triangle – Curved triangle with constant width
- reversible cellular automaton – Cellular automaton that can be run backwards
- Klaus Roth – British mathematician
- Rule 90 – Elementary cellular automaton
- Rule 184 – Elementary cellular automaton
- Schwarz lantern – Near-cylindrical polyhedron with large area
- Shapley–Folkman lemma – Sums of sets of vectors are nearly convex
- square-difference-free set – Numbers whose differences are not squares
- square pyramidal number – Number of stacked spheres in a pyramid
- squaring the circle – Problem of constructing equal-area shapes
- Stars (M. C. Escher) – Wood engraving print by M. C. Escher
- Steinitz's theorem – Graph-theoretic description of polyhedra
- Carl Størmer – Norwegian geophysicist and mathematician
- Sylvester–Gallai theorem – Existence of a line through two points
- Sylvester's sequence – Integer sequence in number theory
- Theil–Sen estimator – Statistical method for fitting a line
- three-gap theorem – On distances between points on a circle
- three utilities problem – Mathematical puzzle of avoiding crossings
- Turán's brick factory problem – Problem of minimizing crossings in bicliques
- 2-satisfiability – Logic problem, AND of pairwise ORs
- Viète's formula – Infinite product converging to 2/π
- widest path problem – Path-finding using high-weight graph edges
- witch of Agnesi – Cubic plane curve
- X + Y sorting – Problem of sorting pairs of numbers by their sum
- YBC 7289 – Ancient Babylonian clay tablet
- Znám's problem – Problem on divisibility among sets of integers
See also
- Stuff I've changed, other stuff I've done stuff to, and stuff I'd like to do
- Featured pictures (as nominator, not creator): Bill Hosokawa at the Heart Mountain Relocation Center, Street Musicians at the Door
- Spiky things
Boxicity
This user is a member of WikiProject Mathematics. |
CS | This user is a member of WikiProject Computer science. |
This user is a member of WikiProject Academic Journals. |
This user is a member of WikiProject Women in Red (redlinks→blue) |
This user teaches at a university or other institution of higher education. |
OC | This user lives in Orange County, California. |
they | This user considers singular they standard English usage. |
, | This user fixes comma-splices; they are annoying. |
This user is an administrator on the English Wikipedia. (verify) |
This user has been a member of Wikipedia since August 2006. |
This user contributes images to Wikimedia Commons. |