User Robert Bryant

4 votes

Neighborhood theorem for conical Lagrangian

answered Dec 7, 2022 at 10:28

4 votes

Accepted

An analogue of Mostow-Palais equivariant embedding theorem for the group of conformal automorphisms of the 2-sphere

answered Jul 14, 2023 at 1:21

3 votes

Accepted

Method of characteristics with 2 dependent variables in 3 dimensions

answered May 28, 2023 at 10:18

3 votes

Obstructions to the existence of a flat connection on a vector bundle

answered Sep 30, 2023 at 12:24

3 votes

Accepted

Homogeneous metric connections on 3-dimensional Lie groups

answered Sep 22, 2023 at 20:25

3 votes

Accepted

Hyperbolic system of PDEs with elliptic-like boundary contions

answered Jan 10, 2023 at 6:43

3 votes

Accepted

Requirement of parametrization of surfaces

answered Apr 8, 2023 at 11:09

3 votes

Accepted

How badly does the geodesic exponential map fail to be $C^2$ on Finsler manifolds

answered Sep 19 at 16:30

3 votes

Reference request: $\operatorname{Sym}^2_0(T^*M) \simeq \Lambda_- \otimes \Lambda_+$

answered Dec 13 at 9:45

3 votes

Integrability of modified diagonalizable Jacobian

answered May 6 at 14:54

3 votes

Embed exceptional non-compact simply connected simple Lie groups into classical simple Lie groups with preserving centers

answered Feb 1 at 20:29

3 votes

Exterior differential systems on compact three-manifolds and Cartan-Kähler theory

answered Dec 2, 2023 at 19:14

3 votes

Heat kernel of left-invariant metric on 3-sphere

answered Oct 7, 2023 at 19:26

3 votes

Accepted

Classes of curves closed under Minkowsky sum

answered Jul 5, 2021 at 10:35

3 votes

Accepted

Tzitzeica surface

answered Dec 18, 2021 at 19:17

3 votes

Equivalence problem of classifying heat equations

answered Feb 12, 2022 at 23:46

3 votes

Accepted

Shrinking a disk with fixed differential

answered Oct 20, 2022 at 18:06

3 votes

Does linearity of cofactor imply linearity of determinant for 3×3 symmetric matrices?

answered Oct 25, 2022 at 15:49

3 votes

Accepted

Extrinsically flat submanifolds of a Riemannian manifold

answered Jul 22, 2022 at 14:27

3 votes

Accepted

Planar curves in $M^{m}$ vs curves in $M^{2}$

answered Jul 24, 2022 at 14:53

3 votes

Under which conditions does this PDE have unique solutions

answered Jun 17, 2022 at 14:17

3 votes

Accepted

Question about differential operators in a completely non-integrable distribution

answered May 5, 2022 at 14:35

3 votes

Using Darboux's to solve 2D system of first order linear PDEs with variable coefficients

answered Apr 23, 2022 at 19:52

3 votes

Accepted

2D-metric to diagonal form with determinant 1

answered May 28, 2021 at 23:59

3 votes

Real eigenvectors of complex matrices

answered Oct 21, 2020 at 20:27

3 votes

Accepted

Parametrization of real-valued SU(N)

answered Feb 13, 2020 at 17:26

3 votes

Accepted

Problem arising in metrizability of connections: Simultaneously skewsymmetrizing matrices

answered Nov 29, 2019 at 10:10

3 votes

Holonomy groups of Hermitian, and hyper-Hermitian, manifolds

answered Apr 30, 2020 at 22:38

3 votes

Complex manifold defined over $\mathbb{R}$

answered Oct 6, 2020 at 11:22

3 votes

Complex manifold defined over $\mathbb{Q}$

answered Oct 6, 2020 at 11:29

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998 Answers

Neighborhood theorem for conical Lagrangian

An analogue of Mostow-Palais equivariant embedding theorem for the group of conformal automorphisms of the 2-sphere

Method of characteristics with 2 dependent variables in 3 dimensions

Obstructions to the existence of a flat connection on a vector bundle

Homogeneous metric connections on 3-dimensional Lie groups

Hyperbolic system of PDEs with elliptic-like boundary contions

Requirement of parametrization of surfaces

How badly does the geodesic exponential map fail to be $C^2$ on Finsler manifolds

Reference request: $\operatorname{Sym}^2_0(T^*M) \simeq \Lambda_- \otimes \Lambda_+$

Integrability of modified diagonalizable Jacobian

Embed exceptional non-compact simply connected simple Lie groups into classical simple Lie groups with preserving centers

Exterior differential systems on compact three-manifolds and Cartan-Kähler theory

Heat kernel of left-invariant metric on 3-sphere

Classes of curves closed under Minkowsky sum

Tzitzeica surface

Equivalence problem of classifying heat equations

Shrinking a disk with fixed differential

Does linearity of cofactor imply linearity of determinant for 3×3 symmetric matrices?

Extrinsically flat submanifolds of a Riemannian manifold

Planar curves in $M^{m}$ vs curves in $M^{2}$

Under which conditions does this PDE have unique solutions

Question about differential operators in a completely non-integrable distribution

Using Darboux's to solve 2D system of first order linear PDEs with variable coefficients

2D-metric to diagonal form with determinant 1

Real eigenvectors of complex matrices

Parametrization of real-valued SU(N)

Problem arising in metrizability of connections: Simultaneously skewsymmetrizing matrices

Holonomy groups of Hermitian, and hyper-Hermitian, manifolds

Complex manifold defined over $\mathbb{R}$

Complex manifold defined over $\mathbb{Q}$