New posts in riemannian-geometry

Proof that every Riemannian geodesic is locally minimizing

Any compact embedded $2$-dimensional hypersurface in $\mathbb R^3$ has a point of positive Gaussian curvature

What does $ds^2$ mean and how does it specify a metric?

Bound of $D\exp$ in Riemannian manifold with $|\text{sec} M| \leq K$ and $\text{inj}M \geq i_0$

Control the sectional curvature

$ a+b+c=0,\ a^2+b^2+c^2=1$ implies $ a^4+b^4+c^4=\frac{1}{2}$

Worst case examples of non-differentiability of the Riemannian distance function

How to define a Riemannian metric in the projective space such that the quotient projection is a local isometry?

Can speed be defined for a parametrized but irregular curve in a Riemannian manifold?

On a definition of manifold

Geodesic convexity and the 2nd fundamental form

Holonomy of Lie groups

The Riemannian Distance function does not change if we use smooth paths?

Riemannian metric making a given function harmonic

Product of Riemannian manifolds?

Explicit example of a compact manifold of dimension $>2$ with strictly negative sectional curvature

Is $ds$ a differential form?

How can I understand the three-dimensional space forms?

Isometries of $\mathbb{S}^n$

How to find the Riemannian Distance on the Sphere $S^n\subset \Bbb{R}^{n+1}$