Home › Events › Colloquium: Juanita Pinzón-Caicedo - NC State University Colloquium: Juanita Pinzón-Caicedo - NC State University Time: Tue Dec 11, 2018, 4:00 pm - 5:00 pm Location: 129 Hayes Healy Bldg. Title: Four–manifolds and knot concordance Abstract