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Complex, contact, Riemannian, pseudo-Riemannian and Finsler geometry, relativity, gauge theory, global analysis.
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Cokernel of the Jacobian Matrix
For an algebraic variety $V = \mathcal{V}(f_1,\dots,f_m)\subset \mathbb{C}^n$, in smooth points $p$ there is a nice geometric interpretation of the Jacobian $(\partial f_i/\partial x_j)_{ij}\lvert_p$' …
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Implicit function theorem on curves
I am trying to figure out, whether the IFT can be generalized to curves. Let's say I have a function $G(x,u)$ mapping $\mathbb{R}^{n+m}\rightarrow \mathbb{R}^n$ with invertible jacobian $\frac{\partia …
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Can we bound the squared Gaussian curvature of genus three triply periodic minimal surfaces?
Assume that $\mathcal{M}$ is a balanced triply periodic minimal surface of genus 3, embedded in a flat torus $T^3=\mathbb{R}^3/\Lambda$ for a lattice $\Lambda$ with volume 1. I want to understand the …