NO you are wrong many intellecutal theft happened and here is the proof from europes highest mathemcatical body- School of Mathematics and Statistics University of St Andrews Scotland
It says
...Recent research paints a new picture of the debt that we owe to Arabic/Islamic mathematics.Certainly many of the ideas which were previously thought to have been brilliant new conceptions due to European mathematicians of the sixteenth, seventeenth and eighteenth centuries are now known to have been developed by Arabic/Islamic mathematicians around four centuries earlier. In many respects mathematics studied today is far closer in style to that of the Arabic/Islamic contribution than to that of the Greeks.....