Very interesting, and actually seems legit, unlike the other post that was reshared many times that used the angle-thing on every number, which didn't look usable at all.
Yes, they are Arabic (which also explains the fact that it's written right to left (for those who don't know, hebrew and arabic are written right-to-left). Europe learnt proper maths from Arab scholars, we also learned cartography, astronomy and civil engineering.
Aaaand .... it's all bullshit about the 'greatest mathematician etc, coz he stole all that shit from the Indian scholars who developed pretty much the same stuff a few hundred years earlier. 'Moslem scholars' ?? Oxymoron.
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I'm in a huff.