Karl Weierstrass

author

Karl Weierstrass

1815–1897

One of the great architects of modern analysis, this 19th-century German mathematician helped put calculus on a far firmer logical foundation. He became famous for bringing precision to ideas like limits and continuity, and for inspiring a generation of students in Berlin.

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Theorie der Abel'schen Functionen

Theorie der Abel'schen Functionen

by Karl Weierstrass

About the author

Born in 1815 in Ostenfelde, in what is now Germany, Karl Weierstrass first studied law and public finance before turning seriously to mathematics. Much of his early career was spent teaching in schools, and his research went largely unnoticed until his papers on elliptic functions brought him wider recognition.

Weierstrass later joined the University of Berlin, where he became one of the most influential mathematics professors of his time. He is especially remembered for insisting on rigorous definitions and proofs in calculus, helping shape the modern treatment of limits, continuity, and infinite series.

His work left a lasting mark on analysis, and his lectures attracted outstanding students from across Europe. Even today, he is often described as one of the founders of modern mathematical analysis.