New posts in Curves And Surfaces

Are there some intrinsic invariants of surfaces other than Gaussian curvature?

Surfaces contained in a ball

In the $\mathbb{H}^3$ upper half space model, is a hemiellipsoid perpendicular to the plane at infinity a minimal surface?

Ivanov's metaconjecture on surface homeomorphisms

Besides the tracioid are there other surfaces of revolution that have a constant negative curvature?

Geodesics on the twisted pseudosphere (Dini's surface)

How to detect a simple closed curve from the element in the fundamental group?

On closed simple curve with curvature at most 1

Proof without words for surface area of a sphere

Formulas for equidistant curves