Medieval Muslims made stunning Math Breakthrough

The original news is posted here:

http://news.yahoo.com/s/nm/20070223/sc_nm/architecture_patterns_dc;_ylt=Ano14Vec1dEy.4eq_1p4wNfMWM0F

Geometrical patterns invented by muslim artisans are very complex structure. Muslims invented these more than 500 years ago, long before west did. Only recently (in 70's) some west mathematician found the theory.

Very interesting. This is another proof that muslims have contributed a lot in science and engineering.