The Grand Rapids Community College Mathematics Department is pleased to announce that it will host its next Mathematics Seminar **TODAY, October 30, 3-4 p.m. in 102 Cook**.

Our speaker is Rebin Muhammad from Ohio University, presenting on the mathematical symmetries in traditional Islamic designs. The variety of symmetries found in Islamic geometric patterns contributes to beautiful works of art and a wealth of opportunities for interesting mathematical explorations. Join us for a presentation that will appeal to a general audience – all are welcome!

Refreshments will be served at 2:45 p.m.

**Symmetries in the Alhambra**

An Islamic geometric pattern is a two-dimensional wallpaper that is created by only using a compass and ruler. The history of Islamic geometric patterns dates back to the 8th century and can been seen in most Islamic countries, where it is used in decorating the walls of buildings and mosques. We will explore some of these patterns that are located in Alhambra (and other places) and see why they are mathematically interesting.