| 2222 | 333 | 442 | 632 | *2222 | *333 | *442 | *632 | 4*2 | 3*3 | 2*22 | 22* | ** | *o | oo | 22o | 0 | 
|   | Visit (my variant of) Brian
    Sanderson's Pattern Recognition Algorithm. See also Java Kali, Totally Tessellated, ScienceU on Tilings, Xah Lee on Wallpaper groups, KaleidoMania, Crystallography Now. | 
|  | Slides for my talk "The 17 Worlds of Planar Ants" | 
| 2222: more... |  A sports field fence at UC Berkeley, June 2000. |  The anteater's cage at the San Francisco Zoo, July 2000. |  Tire threads and a lemur, at the Jerusalem Zoo, September 2000. |  A bed cover and Annie, November 2000. | 
| 333: more... |  A pattern seen at Alhambra, Spain by Brian Sanderson. (Ignore color, respect shape) |  A Moroccan tabletop, seen in a Moroccan goods store, Jaffa April 2002 | This seems to be the hardest of the wallpaper groups to find in an everyday setting. As a poor substitute, I stole an artificial 333 pattern and made it the background image for this page. | |
| 442: more... |  A Nature Conservancy aligator tie at a Tie Rack store, SFO June 2000. |  Floor tiles at Lalushka, Jerusalem Mall, September 2000. |  Sharon and Yizhar's incent burner, December 2000. |  Bathroom tiles at the Kazhdan's, August 2001. | 
| 632: |  A glass window in San Francisco's Bosworth street, March 2000. |  A flower basket in a florist's shop on Berkeley's Shatuck Avenue, May 2000. |  A woven basket on the grass in Berkeley's Live Oak Park, June 2000. |  Floor tiles near Kyoto's Gion district, September 2001. | 
| *2222: more... |  A fence on Arch Street, Berkeley, March 2000. |  A garage door on Spruce Street, Berkeley, April 2000. |  A car's front grill, Berkeley, April 2000. |  My sister in law's shirt, Jerusalem October 2000. | 
| *333: more... |  Assaf blowing a balloon, seen through a kaleidoscope. At the Meier-Poskanzer's, Berkeley, June 2000. Another variant |  Pixels on a CRT monitor showing the linux penguin, August 2000. |  Ceiling at the Frankfurt Airport Terminal A, January 2001. | |
| *442: more... |  A building on Walnut street, Berkeley March 2000. |  Bathroom tiles at MSRI, March 2000. |  The queen of the red hearts, July 2000. |  A climbing net at the Jerusalem Zoo playground and Itai, September 2000. | 
| *632: more... |  A hex game board at the Lawrence Hall of Science, Berkeley March 2000. |  A cactus seen on Walnut Street, Berkeley July 2000. |  Water pipes at a construction site on Arch Street, Berkeley July 2000. |  Assaf's bicycle's light reflector, November 2000. | 
| 4*2: more... |  A bench near the Berkeley-Richmond JCC, March 2000. |  Brienne Braun's necklace, June 2000. |  A non-slid surface on a Berkeley Fire Department fire engine, July 2000. |  A glass wall at the Siegen Hauptbahnhof, January 2001. | 
| 3*3: |  A child's drawing at the Berkeley-Richmond JCC, April 2000. (Respect shape but ignore color) |  A fabric design seen in a Fabric Mart store in Maui, July 2000. Read more. |  Floor tiles seen by Dylan in the Charles River Reservation, Waltham October 2000. |  A plate seen in Kyoto, Japan, September 2001. | 
| 2*22: more... |  A brick wall, Oxford St. between Cedar and Vine, Berkeley March 2000. |  Metal grating near Evans Hall, home of the UC Berkeley math department, March 2000. |  Floor tiles in the Ashby BART station, Berkeley June 2000. |  The Prudential Building, Boston June 2000. | 
| 22*: more... |  Bathroom tiles at the San Francisco Exploratorium, May 2000. (Notice the optical illusion!) |  Pentagonal bathroom tiles made by Wlodzimierz Kuperberg, seen at the Kuperberg-Zieve's, Davis July 2000. |  A design on Nicholas K. Zieve's shirt, July 2000. |  Wall tiles in the Kyoto Kuramaguchi Subway Station, September 2001 | 
| **: more... |  A building near lake Merrit, Oakland March 2000. |  Pixels on an LCD monitor showing a Subpixel Font sample, August 2000. |  A wall design at the Honolulu International Airport, July 2000. |  A quilt at the Beth El Nursery School, Berkeley July 2000. (Ignore drawings) | 
| *o: more... |  A sugar packet, March 2000. |  Wallpaper in Racha Cafe, a Thai restaurant on Berkeley's Telegraph Avenue, April 2000. |  Pixels on the LCD monitor of Raz Kupferman's Sony DSC-S70 camera, November 2000. |  Sparkling wine bottles aging at the Hillebrand Winery, Niagara-on-the-Lake, Canada January 2001. | 
| oo: more... |  Alan Weinstein's table mat, Berkeley June 2000. |  A tie design at Fry's Electronics, June 2000. |  A tie design at Sears, Roebuck and Co., June 2000. |  The guest room wallpaper at the Shaneson-Szczepanski's, June 2000. | 
| 22o: more... |  An entryway on Oxford street, Berkeley March 2000. |  A cleaning cloth at the Kirkpatrick-Weinshall's, June 2000. |  A woven bench back, outside Yali's Cafe, Berkeley August 2000. |  A woven footstool, August 2000. (Foot courtesy of Brewster Kahle) | 
| 0: more... |  A typical web page background. |  A Lego piece, June 2000. |  Billboard ads for http://www.yeshua.co.il, Jerusalem Februaray 2001. |  Television screens at a Future Shop, Toronto, August 2002. |