From Wikipedia, the free encyclopedia
This page is for listing suggestions for featured content on the
Mathematics Portal . If you have suggestions, please feel free to add them here. Also feel free to comment on any suggestions listed here.
For already-featured content please see:
Presently, there is no formal process for selecting featured content. This may change if need demands. The maintainers of the portal will select content listed here at their discretion, or, in absence of any suggestions, at their whim.
Articles
Pictures
Images must have proper free use tags - no fair use or deprecated tags.
Real part of the
modular discriminant on the unit circle
Absolute value of the
gamma function on the complex plane
13 weak orders
View of regular hyperbolic tiling cantellated {3,7}
Cantellated 24-cell stereo projection wireframe
Bigyrate diminished rhombicosidodecahedron (Johnson solid #79)
Stella octangula / Star Tetrahedron
See also:
Category:Mathematics images
Note:
Portal:Mathematics/Upcoming featured pictures now lists upcoming months, so any appropriate image can actually be placed "in the queue" to appear as a future "Picture of the month".
Did you know...
User:David Eppstein has a collection of his many DYK items.
Kiefer .
Wolfowitz 13:55, 2 May 2011 (UTC)
Eppstein
... that according to
Kawasaki's theorem , an
origami
crease pattern with one
vertex may be
folded flat (pictured) if and only if the sum of every other angle between consecutive creases is 180º? (11.04)
... that
John R. Isbell was the primary contributor to the mathematical theory of
uniform spaces ? (11.04)
... that
Edgar Gilbert investigated the
mathematics of
shuffling
playing cards ? (11.03)
... that, in the
Rule 90
cellular automaton , any finite pattern eventually fills the whole array of cells with copies of itself? (11.02)
... that
The Princeton Companion to Mathematics is the 2011 winner of the
Mathematical Association of America 's
Euler Book Prize ? (11.02)
... that
block cellular automata , invented by
Norman Margolus , can be used to simulate
lattice gases , sand piles, and
billiard-ball computers ? (11.02)
... that
Andreu Mas-Colell , currently the
Minister of Economy and Knowledge of
Catalonia, Spain , has studied
general equilibrium theory by using
differential topology ? (11.01)
... that
Graciela Chichilnisky , who proposed the
Kyoto Protocol 's market for
carbon credit
trading , obtained her PhDs in
mathematics and
economics without ever having been an
undergraduate ? (11.01)
... that
Starr's corollary to the
Shapley–Folkman lemma was proved by an undergraduate student of
Kenneth Arrow ? (10.10)
... that
Paul Erdős challenged
Jon Folkman to solve
mathematical problems immediately after Folkman's surgery for brain cancer? (10.10)
... that every
round-robin tournament either has a set of players who win all games against players outside the set, or its
graph of wins and losses is
pancyclic , having
directed cycles of all lengths? (10.09)
... that, according to the
pizza theorem , a
circular
pizza that is sliced off-center into eight equal-angled wedges can still be
divided equally between two people? (
09.12 )
... that the
clique problem of programming a computer to find
complete
subgraphs in an
undirected graph was first studied as a way to find groups of people who all know each other in
social networks ? (
09.12 )
... that
Matthew T. Dickerson is a
computational geometer , scholar of
J. R. R. Tolkien and the
Inklings , novelist,
blues
musician ,
fly fisherman ,
maple sugar
farmer , and
beekeeper ? (
09.11 )
... that the
Herschel graph (pictured) is the smallest possible
polyhedral graph that does not have a
Hamiltonian cycle ? (
09.10 )
... that
Martin Demaine founded the first one-man
art glass
studio in Canada and
home-schooled his son
Erik to become
MIT ' s youngest ever professor despite not having a college degree himself? (
09.09 )
... that the
Life without Death
cellular automaton , a mathematical model of
pattern formation , is a variant of
Conway's Game of Life in which cells, once brought to life, never die? (
09.06 )
... that one can list every
positive
rational number without repetition by
breadth-first traversal of the
Calkin–Wilf tree ? (
09.05 )
... that the first textbook in
Hungarian , an
encyclopedia by
János Apáczai Csere , was written and published in the
Netherlands ? (
09.03 )
... that the
Hadwiger conjecture (diagram pictured) implies that the surface of any
three-dimensional
convex body can be
illuminated by only eight light sources, but the best
proven bound is that 16 lights are sufficient? (
09.03 )
... that an
equitable coloring of a
graph (pictured) , in which the numbers of vertices of each color are as nearly equal as possible, may require far more colors than a
graph coloring without this constraint? (
09.03 )
... that no matter how
biased a coin one uses,
flipping a coin to determine whether each
edge is present or absent in a
countably infinite
graph will always produce
the same graph , the
Rado graph ? (
09.03 )
... that there are 115,200 solutions to the
ménage problem of
permuting six couples at a twelve-person table so that men and women alternate and are seated away from their partners? (
09.01 )
... that
mathematician
Paul Erdős called the
Hadwiger conjecture , a still-open generalization of the
four-color problem , "one of the deepest unsolved problems in
graph theory "? (
08.05 )
...that
Dutch
topologist
Johannes De Groot is the
academic grandfather , great-grandfather, and great-great-grandfather of his
namesake via four different paths of academic supervision? (
08.04 )
...that
Carl Størmer , "the acknowledged authority" on
aurorae and the motion of charged particles in the
magnetosphere , began his academic career inventing
formulae for
π ? (
08.03 )
...that in
Floyd's algorithm for
cycle detection , the
tortoise and hare move at very different speeds, but always finish at the same spot? (
07.10 )
...that in
graph theory , a
pseudoforest can contain
trees and pseudotrees, but cannot contain any butterflies, diamonds, handcuffs, or bicycles? (
07.10 )
...that it is not possible to
configure two mutually
inscribed
quadrilaterals in the
Euclidean plane , but the
Möbius–Kantor graph (pictured) describes a solution in the
complex projective plane ? (
07.09 )
...that the six
permutations of the
vector (1,2,3) form a
hexagon in
3d space , the 24 permutations of (1,2,3,4) form a
truncated octahedron in
four dimensions , and both are examples of
permutohedra ? (
07.08 )
...that the
Rule 184
cellular automaton can simultaneously model the
behavior of cars moving in traffic , the
accumulation of particles on a surface , and particle-antiparticle
annihilation reactions? (
07.05 )
K.W.
Here are some DYK associated with me:
Did you know?
—;I've crossed out those here which are already used. ―
J uP itE er (
talk ) 14:32, 2 November 2012 (UTC)