Cauchy

Cauchy, a mathematician, contributed to analysis by developing concepts of limits and continuity. In particular, a "Cauchy sequence" is a sequence of numbers where the terms get arbitrarily close to each other as the sequence progresses, regardless of its starting point. This idea helps define what it means for a sequence to converge to a specific value, even if the limit is not known initially. Cauchy's work provided a rigorous foundation for calculus and analysis, ensuring that ideas about approaching limits are precise and logically sound.