On Geometry and Topology

[Guest]

Wow! "KNOT THEORY:
Graduate Student Solves Decades-Old Conway Knot Problem
It took Lisa Piccirillo less than a week to answer a long-standing question about a strange knot discovered over half a century ago by the legendary John Conway."

https://www.quantamagazine.org/graduate-student-solves-decades-old-conway-knot-problem-20200519/.

[Guest]

FYI: "Mathematician helps resolve question first asked 60 years ago on the geometrical properties of seven-dimensional objects which very closely resemble spheres."

https://phys.org/news/2020-05-mathematician-years.html.