What are...knotted surfaces?

Goal.
Explaining basic concepts of geometric topology in an intuitive way.

This time.
What are...knotted surfaces? Or: Codimension 2.

Disclaimer.
Nobody is perfect, and I might have said something silly. If there is any doubt, then please check the references.

Disclaimer.
Geometric topology is usually the study of manifolds. This can mean manifold things ;-) So to be precise, this video series is mostly about knots, surfaces, three and four manifolds.

Slides.

Website with exercises.

Thumbnail.

Geometric topology.

Concepts in geometric topology.

Applications of geometric topology.

Surfaces plus examples.

Knotted surfaces.

Pictures used.

Some books I am using (I sometimes steal some pictures from there).

KnotAtlas.

SnapPy.

Mathematica.

SageMath.

#geometrictopology
#topology
#mathematics