May 31, 2016

May 30, 2016

Wishing Tree


Wishing tree (Norfolk Island pine: Araucaria heterophylla). Royal Botanic Garden, Sydney, Australia, 1979.


Photos by I. Peterson

May 29, 2016

May 28, 2016

Temari Symmetry


Symmetric temari ball design by Carolyn Yackel. Displayed at Gathering 4 Gardner 10, Atlanta, 2012.

For another example of Carolyn Yackel's designs, see "Temari Ball Symmetry."

Photo by I. Peterson

May 27, 2016

Four Parallelepipeds


Sculpture by Antoni Milkowski, created from four parallelepipeds. University at Albany, Albany, New York, 1992.


See also "Relentless Symmetry."

Photos by I. Peterson

May 26, 2016

Rock Channels


Jacob's Dream (detail) by Jack Maxwell. Abilene Christian University, Abilene, Texas, 2016.

Photo by I. Peterson

May 25, 2016

Möbius Mentions II

From a commentary by Jeremy Egner on "Game of Thrones," Season 6, Episode 5New York Times, May 23, 2016.

"I'm curious and also slightly afraid to see how much an already convoluted show will further complicate itself with this new element.

"But in this case, the Möbius strip approach worked, imbuing an already suspenseful and sad moment with deep poignancy and meaning."

For more examples of written references to Möbius strips, see "Möbius Mentions I."

May 24, 2016

W Tower


WWW-Tower by Athena Tacha. Wisconsin Place, Chevy Chase, Maryland, 2016.


Photos by I. Peterson

May 23, 2016

Double Torus Stonehenge




This sculpture, in 28 steps, depicts the gradual transformation of a double torus from a configuration in which its two handles are linked to one in which they are unlinked, then linked again to continue the endlessly cycling dance.

For other examples of artworks by Helaman Ferguson, see "Hyperbolic Quilt," "Four Canoes," "Fractal Drum," and "Umbilic Torus, Writ Large."

Photos by I. Peterson

May 22, 2016

Knife Edge Guard


Knife Edge Mirror Two Piece by Henry Moore. East Building, National Gallery of Art, Washington, D.C., 1999.

For another Moore sculpture, see "Henry Moore at MIT."

Photo by I. Peterson

May 21, 2016

Shiny Loop


Construction #66 by Jose de Rivera. Annenberg School for Communication, University of Pennsylvania, Philadelphia, 2000.

For another sculpture by Jose de Rivera, see "Infinity in Eight Minutes."

Photo by I. Peterson

May 20, 2016

Star Bends


Origami I by Vladimir Bulatov. Exhibition of Mathematical Art, Joint Mathematics Meetings, San Francisco, 2010.

Photo by I. Peterson

May 19, 2016

Folded Bowl


Simple bowl (32) by Goran Konjevod. Exhibition of Mathematical Art, Joint Mathematics Meetings, Washington, D.C., 2009.

Photo by I. Peterson

May 18, 2016

Beadwork Triangles


This beadwork bracelet, created by Laura Shea, is based on a triangular tiling. Joint Mathematics Meetings, New Orleans, 2007.

For more on mathematical beadwork, see "Mathematical Knitting Network," "Symmetries of Beaded Beads," and "Bead Creatures."

Photo by I. Peterson

May 17, 2016

Stable Positions


Metal model of Charles Ginnever's sculpture Rashomon. Second Annual Conference of the International Society of the Arts, Mathematics and Architecture (ISAMA 2000), University at Albany, Albany, New York, 2000.


Placing the model in different orientations demonstrates the sculpture's many stable positions. The artist can then select those he would like to use full scale in a particular setting.

Photos by I. Peterson

May 16, 2016

Mineral Pool


Mineral pool. Yellowstone National Park, Wyoming, 1977.

Photo by I. Peterson

May 15, 2016

Devils Tower Columns


A massive array of columns, often with with a hexagonal cross section, rises into the sky. Devils Tower National Monument, Wyoming, 1977.

Photo by I. Peterson

May 14, 2016

May 13, 2016

Maryhill Stonehenge


Stonehenge replica overlooking the Columbia River. Maryhill, Washington, 1977.


For more about Stonehenge on the Salisbury Plain in England, see "Stonehenge Cycles."

Photos by I. Peterson

May 12, 2016

Pond Scum Structure


Intricate structure of pond scum. University of North Florida, Jacksonville, Florida, 2012.


Photos by I. Peterson

May 11, 2016

May 10, 2016

Froth Billows


Billowing froth. East Tennessee State University, Johnson City, Tennessee, 2008.

Photo by I. Peterson

May 8, 2016

Rock Bands


Banded sedimentary rock formations. Badlands National Park, South Dakota, 1977.

Photo by I. Peterson

May 7, 2016

Star Flower


Star of Bethlehem (Ornithogalum). Bronxville, New York, 2014.


Photos by I. Peterson

May 6, 2016

Gearing to Sail


View from the brigantine St. Lawrence II. Kingston, Ontario, 1974.

Photo by I. Peterson

May 5, 2016

Arched Passage


Santa Rosa Junior College. Santa Rosa, California, 2011.

For examples of sculptures on the Santa Rosa Junior College Campus, see "Segments of Circles, Sections of Spheres" and "Annual Ring."

Photo by I. Peterson

May 4, 2016

San Diego Reflections


Building reflections. San Diego, California, 2008.

Photo by I. Peterson

May 3, 2016

May 2, 2016

Moebius Eclipse


Eclipse by Charles O. Perry. Hyatt Regency Hotel, Embarcadero Center, San Francisco, 2010.


For more on the Moebius sculptures of Charles Perry, see "Moebius Continuum."

Photos by I. Peterson

May 1, 2016

Ancora Imparo


Westminster College, Salt Lake City, Utah, 2012.

Photo by I. Peterson