The US-led international mission formed a decade ago to combat the Islamic State extremist group in Iraq will cease to exist by September 2025, said a joint statement issued Friday by the US and Iraqi ...
discovered this pattern on a 14th century madrassa.在一所14世纪的伊斯兰学校中 现了这个图案。 And after some analysis, concluded that this was, in fact, Penrose tiling 500 years before ...