So? Being "Arabic" predates Islam and has more to do with being of a certain region (Arabia) and usually having common lineage with other Arabs. Even if it didn't predate Islam, that wouldn't affect that guy inventing numbers, unless of course they were divined by Allah. Nothing would change.

Well I assume that most arabic people are islam. Anyway to be technical, anything can affect people. For all I know, if islam was never a religion, then that guy might not have been born.

But let's be fair here: Jesus was Arabic. Jews fit right into that category, and by and large they practice Judaism, not Islam. Continuing on: While his writing, translated to Latin, brought the decimal point to the Western world, he didn't invent numbers so much as [url=http://www.mediahistory.umn.edu/archive/numerals.html]piggyback off of the Indian system of numbers that had been around since about 600 AD[/url]. So even if he was born because his parents were devout Islamic followers and a lack of Islam would mean he was never born, those numbers would still make their way over in some form or fashion over time. The system was translated over to arabic, then over to Latin. It may have taken more time, but it would've gotten translated and sent westward.