Diophantus

Diophantus was an ancient Greek mathematician known for his work in algebra, particularly for focusing on equations that seek integer solutions. His famous book, "Arithmetica," introduced what we now call Diophantine equations—equations where we look for whole number solutions. Diophantus is often referred to as the "father of algebra" because he laid foundational concepts that influenced later algebraic development. He used a rhetorical style of mathematics, expressing problems in words rather than symbols, which was common in his time. His work helped shape the study of number theory and contributed to the evolution of algebra.