[PGR88]

And: America’s technology industry “would not exist without the contributions of Arab mathematicians.”

I believe any "science" that occurred in Muslim lands was borrowed/captured from the Greeks/Byzantines. The walls of Constantinople were only battered down with a before unseen cannon built by a well-paid Hungarian.

[HiTech RedNeck]

Or, it existed prior to Mohammed, shared with them by others.

[sunrise_sunset]

Pretty much, they kept it alive while Europe was in disarray. Net contributions were not great.