They took the practical calculation as the primacy of mathematics and established algebra based on arithmetic not on geometry. These important mathematical thought were crucial to the big change of the European mathematical thinking.

• 他们将实用计算放在数学的首位,并把代数建立在算术而不是几何的基础之上,这些重要的数学思想对欧洲的数学思想的重大转变起着至关重要的作用。