Fra Luca Bartolomeo de Pacioli was an Italian mathematician and Franciscan friar, born around 1447. He is often referred to as the "father of accounting" for his significant contributions to the field. His most notable work, *Summa de arithmetica, geometria, proportioni et proportionalita*, published in 1494, included a comprehensive description of double-entry bookkeeping, which is still used in modern accounting. Pacioli's influence extended beyond accounting; he also made contributions to various areas of mathematics, including geometry and algebra. He was a contemporary of Leonardo da Vinci and collaborated with him on several projects, showcasing the intersection of art and mathematics during the Renaissance.