Bolzano

Bernard Bolzano was a 19th-century mathematician and philosopher who contributed to the foundations of calculus and logic. He emphasized the importance of rigor in mathematics, advocating for precise definitions and proofs. Bolzano's work helped shape modern analytical mathematics by formalizing concepts like continuity and the theory of functions. His philosophical insights also influenced logic and the understanding of infinite sets. Overall, Bolzano played a key role in developing the early mathematical structures that underpin much of modern mathematics today.