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"Flora #1 (time slice)," by Brian Evans (University of Alabama, Tuscaloosa)Archival inkjet print, 9" x 6" (14" x 11" framed), 2010
How much is lost in the reduction of reality to human sensation? The infinite detail there in front of us is reduced to 100 million discrete measurements made with the rods and cones on the retina of the eye. Infinity reduced to 100 million, which is reduced another ninetynine percent as the signal is compressed to travel only 1 million pathways on the optic nerve. It’s a wonder we can make sense of the world at all.
These little photos are also reductions, slitscans of flowers rotating on a tabletop—2D slices of time. The four dimensions of our reality (x, y, z, t) are reduced to two (x, t) showing a different aspect of the real. The temporal is mapped into the static and new forms and structures are seen. These works are metaphors for the language of mathematics. What wonders we can discover through the processes of abstracting, reducing, mapping, and finally looking in new ways at the little slices of information we receive from all the surrounds us.  Brian Evans (http://brianevans.net)
Mar 10, 2011


"Fractal Tree No. 13," by Robert Fathauer (Tesselations Company, Phoenix, AZ)Digital print, 13" x 16", 2010
"Fractal Tree No. 13" is a blackandwhite digital artwork constructed by graphically iterating a photographic building block. Several photographs of a small portion of a palo verde tree were combined and digitally altered to create the building block, which allows smooth joining of smaller copies to larger copies. In addition to being scaled down, the three smaller copies, added with each iteration are rotated by varying angles, and one is reflected as well. A sufficiently large number of iterations were performed so that the image is indistinguishable to the eye from the image that would result after an infinite number of iterations. In this particular tree, the iteration rules result in considerable overlap of the branches, leading to a complex collection of small features reminiscent of pencil marks. The fractal shape of the envelope of these features didn't emerge until approximately one dozen iterations were performed.  Robert Fathauer (http://www.tessellations.com)
Mar 10, 2011


"Blue Ionic Polyhedra: 12 Beaded Beads in Two Sizes," by Gwen Fisher (bead Infinitum, Sunnyvale, CA)Bead weaving with crystal, glass and metal beads, and thread, 12 beads, longest diameter ranges from 11 mm to 33 mm, 2010
The Ionic Polyhedra are part of my larger body of mathematical artwork in beaded beads. A beaded bead is a cluster of smaller beads, woven together with a needle and thread, to form a composite cluster with one or more holes running though the center of the finished beaded bead. To make these beads, I started with inner cluster of beads in two sizes where the larger beads are aligned on the edges of polyhedra. For the larger six beads, I added layers of seed beads, which emphasize the edges of the underlying polyhedra. Although they appear different, the miniature version of each Ionic Polyhedron maintains the same structure and thread path as its larger version, but the beads are smaller, and the embellishment is simpler. Represented are the octahedron, cube, pentagonal dipyramid, pentagonal antiprism, cuboctahedron, and rhombic dodecahedron. This coloring of the miniature cuboctahedron and rhombic dodecahedron illustrates the dual relationship between these two polyhedra.  Gwen Fisher (http://www.beadinfinitum.com)
Mar 10, 2011


"Quasirandom Aggregation," by Tobias Friedrich (Max Planck Institute for Informatics, Saarbrücken, Germany)Digital print on glossy paper, 20" x 20", 2010
Given an arbitrary graph, a random walk of a particle is a path that begins at a given starting point and chooses the next node with equal probability out of the set of its current neighbors. Around 2000, Jim Propp invented a quasirandom analogue of random walk. Instead of distributing particles to randomly chosen neighbors, it deterministically serves the neighbors in a fixed order by associating to each vertex a "rotor" pointing to each of its neighbors in succession. The picture shows what happens when one billion particles are placed at the origin and each one runs until it reaches an unoccupied vertex. Black pixels denotes cells that never get visited by a particle; for the other cells, the color of the pixel indicates in which direction the rotor points at the end of the process. More information can be found at http://rotorrouter.mpiinf.mpg.de.  Tobias Friedrich (http://www.mpiinf.mpg.de/~tfried/)
Mar 10, 2011


"Triad," by Mehrdad Garousi (Hamadan, Iran)Digital print on canvas, 18" x 16", 2009
This work created in TopMod comprises a uniform twisted strip with some ties and joints. The shape containing an evident threefold rotational symmetry is composed of three similar components connected at two central joints placed back and forth. The outstanding issue is another hidden symmetry, which may not be discovered at a hasty glance. In addition to the former symmetry, condoning back and forth or up and down position of layers, as a flat plane, the whole sculpture has a threefold mirror symmetry. The reason of such a property is the same onefold mirror symmetry governing each of the three components.  Mehrdad Garousi (http://mehrdadart.deviantart.com)
Mar 10, 2011


"Tea for Eight," by Susan Goldstine (St. Mary's College of Maryland, St. Mary's City)Glaze on commercial ceramic, 5" x 8" x 5", 2010
The FourColor Theorem says that we can color any map on a plane or sphere with only four colors so that no neighboring countries are the same color. On other surfaces, we may need more colors; on a twoholed torus, eight colors are sufficient, and there are maps that require all eight colors.
When this tea set is stacked with the handles aligned, it forms a topological twoholed torus with a map of eight countries, each of which touches all of the others, proving that eight colors are necessary. The teapot has white, red, orange, and yellow countries, and the teacup has black, green, blue and purple countries. At the seam between the pieces, each of the top colors touches each of the bottom colors.
On oneholed tori, such as the teapot and the teacup, seven colors are required for an arbitrary map. Unfortunately, a sevencolor map is incompatible with the tea set's exterior pattern; when the tea set is opened, hidden colors give sixcolor maps of the teacup and the teapot.  Susan Goldstine (http://faculty.smcm.edu/sgoldstine)
Mar 10, 2011


"Circle Brooches," by Anansa Green (Stephen F. Austin State University, Nacogdoches, TX)Fine silver, copper, 1.5 x 1.5 x 0.25 inches each (2 brooches), 2009
These brooches were inspired by my undergraduate graph theory research into the colorability of the map created by a finite tiling of circles in the plane. I was able to prove by mathematical induction that the resulting map is 2colorable. This result lends itself quite well to the process of married metals. Two pieces of metal were overlaid: one copper and the other fine silver. The design was pierced from both sheets at once, and alternating pieces were swapped to form the two 2colored designs. The individual components of each image were silversoldered together, and the sides and back of each brooch hollow constructed to create the final form. The process yields two images, each one the inverse of its partner. To emphasize the complementary nature of each image, I fabricated one brooch with a convex face and the other concave.  Anansa Green
Mar 10, 2011


"Right Angle Triangles in Flatland A," by Gary Greenfield (University of Richmond, VA)Digital print, 18" x 12", 2010
Four Flatlanders are sweeping through Flatland celebrating their discovery of how to draw right triangles. Their method is as follows: (1) pseudorandomly generate a turning angle alpha and an adjacent side length x; (2) calculate the complementary angle beta and use trigonometry to calculate the opposite side length y and hypotenuse length h; (3) then swivel right, forward x, turn alpha, forward h, turn beta, forward y, swivel left. These Flatlanders belong to the caste required to "wag" from side to side when they walk. Thus they defy convention by drawing perfectly straight thick lines when presenting their right triangle discovery. Here, Flatlanders are implemented as simulated drawing robots obeying obstacle and collision avoidance, and their wag is implemented by making one of their pens swing side to side in such a way that a sinusoidal track is drawn as they make their through Flatland.  Gary Greenfield (http://www.mathcs.richmond.edu/~ggreenfi/)
Mar 10, 2011


"Ramanujan, in the style of Chuck Close, using wavelets," by Edward Aboufadel (Grand Valley State University, Allendale, MI), Clara Madsen (University of Oregon, Eugene) and Sarah Boyenger (Florida State University, Tallahassee)Digital print, 16" x 20", 2009
Both the subject of this work and the method of creation are intricately mathematical. Ramanujan is the famous 20th century Indian mathematician who established or conjectured a broad collection of results in number theory. He caught the attention of Hardy, who recognized Ramanujan's genius. To create this digital image in the style of Chuck Close, wavelet filters were used to detect the existence and orientation of edges in the original image, and other calculations were made to determine the colors in the "marks".
Mar 10, 2011


"Gaussian Wave Packet Sculpture," by Chet Alexander (University of Alabama, Tuscaloosa)Wood (birch, walnut, maple, ebony), 9" x 11" x 10", 2006
Mathematics of the Wave Packet Sculpture:
In this sculpture, mathematics was used to calculate the Gaussian wavepacket model of a particle in quantum mechanics. This is accomplished by forming a linear combination of plane waves of different wavenumbers, k. A particle with mass and momentum p can have wave properties as described by the de Broglie wavelength relation λ=h/p. The Gaussian wave packet model is a way to combine the wave and particle properties of a particle of momentum p=hk localized at position x_0. The probability of finding the particle at position x_0 is given by the probability density of the particle as
ІΨ(x,0) І^2~exp[(xx_0)^2/2(∆x)^2]
, and by a Fourier transform the probability density of the particle's momentum can be written
ІΨ(k) І^2~exp[(kk_0)^2/2(∆k)^2].
The wave packet sculpture presents a Gaussian wave packet envelope and an electromagnetic wave enclosed in the envelope.  Chet Alexander
Mar 10, 2011


“CORPI INCROCIATI • DUE CORPI,” by Cristina Besa (European Society for Math & Art, Islas Baleares, Spain)6 x 7 negative, print on Ilford glossy paper, 12” x 16” (framed 20” x 24”), 2004
Bilateral symmetry—a combination of identical exposures intersecting with their own reflections.
The intersection of the two shapes A (original) and B (reflection of A) are positioned at the same angle to create a new form bound by its central line reflection.  Cristina Besa
Mar 10, 2011


"The Sphere and the Labyrinth," by Robert Bosch (Oberlin College, Oberlin, OH)Wood (maple) and steel, 3" in diameter, 2010
Inspired by my favorite childhood toy, a ball labyrinth game made by Brio, I hand carved a symmetric simple closed curve into the surface of a 3'' diameter ball of maple. The curve is a channel that is deep enough and wide enough to hold a 0.5" diameter ball of steel. It is possible to pick up the ball of wood and maneuver it so that the ball of steel will roll through the entire channel and end up back where it started.  Robert Bosch (http://www.dominoartwork.com)
Mar 10, 2011


"Ideal quilt, slightly imperfect," by Andrzej K. Brodzik (Mitre Corporation, Bedford, MA)Digital print, 24'' x 20'', 2010
Ideal quilts are Zak space representations of families of ideal sequences. Ideal sequences are sequences with certain special grouptheoretical properties. In particular, ideal sequences satisfy the Sarwate bound, having both zero outofphase autocorrelation and minimum crosscorrelation sidelobes. Construction of ideal sequences was described in the recent book, Ideal sequence design in timefrequency space. Ideal quilts are (p1)p by (p2)!p images, where p is a prime. As these images tend to be long and narrow, to facilitate display, they are usually divided into columns. Geometrically, an ideal quilt is a sequence of distinct permutations of the canonical image of a diagonal line. Both the overall structure of the image and the association with ideal sequences convey a strong sense of symmetry, predictability, and uniqueness. To counterbalance these qualities, the corrupting effect of tiff data compression, manifested as pixel distortion, is embedded into the image.  Andrzej K. Brodzik
Mar 10, 2011


"Hyperbolic Tiling I," by Vladimir Bulatov (Corvallis, OR)Rapid prototyping sculpture, 200mm x 60mm x 60mm, 2010
This is a visualization of a tiling of the hyperbolic space. The tiling is generated by reflections in the faces of Lambert cube (Coxeter polyhedron), which becomes the fundamental polyhedron of the symmetry group of the tiling. Only 4 out of 6 sides are used, which results in subtiling (subgroup) filling only part of the space. It let us see the internal structure of the tiling.
We use a cylinder model of the hyperbolic spacea 3D generalization of 2D band model. In this model the Poincare ball is stretched into infinite cylinder. Cylinder's axis becomes one of hyperbolic geodesics.
The tiling is oriented to make one it's plane to be orthogonal to the cylinder's axis to have a feet to stand on.
The cylinder's axis is close to the axis of a loxodromic transformation of the group, which gives the pieces its spiral twist. The sharp boundary of the piece corresponds to the limit set of the group. The limit set is fractal
Jordan curve at the infinity of the hyperbolic space.  Vladimir Bulatov (http://bulatov.org)
Mar 10, 2011


"Circles on Orthogonal Circles," by Anne Burns (Long Island University, Brookville, NY)Third Place Award, 2011 Mathematical Art Exhibition
Digital print, 12" x 16", 2010
A loxodromic Möbius transformation has two fixed points, one attracting and the other repelling. Starting with a small circle around the repelling fixed point, and repeatedly applying the Möbius transformation, results in a family of circles that grow at first, each containing the previous one. Successive images eventually pass over the perpendicular bisector of the line connecting the fixed points and shrink as they are attracted to the other fixed point. Each circle in a second family of circles passes through the fixed points and is mapped to another circle in that family. Each circle in the second family is orthogonal to every circle in the first family.  Anne Burns (http://www.anneburns.net)
Mar 10, 2011


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