Theaetetus (mathematician)
ID: theaetetus-mathematician
Theaetetus was an ancient Greek mathematician and philosopher who lived around 417–369 BC. He is most often known for his contributions to geometry and for his work in the field of mathematics, particularly in the study of solid figures and the theory of irrational numbers. Theaetetus is often credited with the mathematical formulation of types of numbers, including the classification of numbers into rational and irrational.
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