If there was any contribution by any Arab then it should be attributed. Where did I say otherwise? All I was talking about was contribution by Hindu mathematicians which was not just appropriated (I'm not against this) but their contribution forgotten/neglected (which kinda pisses me off).

In fact, even in another Hackernews post about "Box Breathing" I made a similar comment: https://news.ycombinator.com/item?id=13512908

I'm not against appropriation but, at the same time, I'm also against whitewashing. Does this make sense?