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And that's a theory built on linear algebra and complex numbers.
And you'll often hear Arabs say, "We invented algebra.
So for example, there was a medieval mathematician named Al-Khwarizmi who invented algebra.
Astronomers like Abd al-Rahman al-Sufi were deepening our understanding of the cosmos, while mathematicians like Muḥammad ibn Mūsā al-Khwārizmī were discovering algebra.