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Answers

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Can one (block) diagonalize the curvature matrix of 2 forms on a Riemannian manifold?

21

Is there any proof that you feel you do not “understand”?

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Is it possible to get another math PhD

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On closed simple curve with curvature at most 1

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Support Functions Of 3D Convex Bodies In Spherical Polar Coordinates

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Construct embedding given metric

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Understanding Gibbs’s inequality (2)

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Why is it important that partial derivatives commute?

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Mathematicians whose works were criticized by contemporaries but became widely accepted later

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determining a convex set by mixed volumes

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Tensor contraction and Covariant Derivative

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Totally Geodesic Submanifolds

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real symmetric matrix has real eigenvalues - elementary proof

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How to understand the diffeomorphism in the Cheeger-Gromov compactness

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Center of mass from the abstract point of view, or could the ancient Greeks invent modern analysis?

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PDE with the Jacobian Determinant

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What is the “real osculating space” of a (minimal) immersion?

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Divergence form Elliptic PDE Removable Singularity/Regularity Question

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Does Physics need non-analytic smooth functions?

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reference for (co)homology theories

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a question about first-order hyperbolic equations

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refined Kato inequality

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Variational problems whose lagrangian density depends on derivatives higher than 1.

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Have derivatives of determinants along 1-psg’s ever been ‘coherently’ computed via Jacobi’s formula?

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Bounded curvature (derivatives) and Shi’s estimates

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Reference request: parabolic PDE

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Quasi-linear System of First Order P.D.E.s of “Mixed” type

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Degeneration of riemannian metrics with curvature bounds

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Weitzenböck Identities

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Analyticity of the solutions of PDE