User Robert Bryant

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Pushing forward a complex structure by submersion

answered Dec 7, 2018 at 9:56

2 votes

Even Isometries in neutral Geometry

answered Feb 13, 2018 at 1:58

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Action of orientation-preserving isometric involution on complex structure

answered Sep 7, 2020 at 19:48

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Relation between separation of variables and Hessian properties

answered Sep 7, 2020 at 11:45

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Metric and particular system of PDE

answered Feb 22, 2020 at 10:59

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Unitary orbits on the Grassmann manifold of 2-planes in complex affine space

answered Nov 18, 2020 at 11:56

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Question about the implicit function theorem. an example of a homogeneous form for which its implicit function satisfies certain conditions

answered Nov 21, 2020 at 12:37

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Product of subgroups of $SU(8)$ algebraic set?

answered Dec 23, 2020 at 21:23

2 votes

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Beltrami equation with harmonic coefficient

answered Dec 31, 2020 at 11:12

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Is there an area-preserving concentric diffeomorphism of the ellipse?

answered Mar 13, 2021 at 12:49

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Maximal symmetries of complete metrics on manifolds

answered Mar 6, 2022 at 19:10

2 votes

Injective group homomorphism on $\frac{Spin(4k+2)\times U(1)}{\mathbf{Z}/2}$ or $\frac{Spin(4k+2)\times U(1)}{\mathbf{Z}/4}\to U(2^{2k})$

answered Aug 21, 2021 at 18:44

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Signs of curvatures of integrals lines of frames with constant principal values

answered Aug 24, 2021 at 14:27

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Invariant measure on affine charts of complex Grassmannian

answered Aug 29, 2021 at 11:47

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A PDE with boundary condition

answered Nov 20, 2022 at 15:23

2 votes

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Decomposition of forms on a Spin$(7)$ manifold

answered Aug 11, 2023 at 1:55

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Parametrization of $k$-ruled submanifold: can we choose the base to be orthogonal to the rulings?

answered Aug 13, 2023 at 12:57

2 votes

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Eigenforms of the Laplacian on Lie groups

answered Aug 21, 2023 at 19:12

1 vote

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

answered Dec 3, 2023 at 18:50

1 vote

Characterization of bi-Hermitian structures with equal Lee forms

answered Jul 4 at 16:49

1 vote

Holonomy of a triangle in an affine symmetric space

answered Aug 7, 2021 at 19:42

1 vote

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Qualitative analysis of the equation and symmetry (point on sphere)

answered Feb 13, 2021 at 17:02

1 vote

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Algebraic geometric conditions on the variety $V(F)$ such that the manifold defined by $F$ has nonvanishing second fundamental form?

answered Nov 21, 2020 at 21:39

1 vote

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What is the name of this geometric structure, where we identify each sphere of vision with the sphere at infinity?

answered Oct 30, 2020 at 12:11

1 vote

Initial value problems on manifolds around submanifolds (reference)

answered May 15, 2020 at 18:08

1 vote

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Functions with a Jacobian whose columns are orthogonal

answered Jul 13, 2020 at 12:15

1 vote

Finding energy minimizing path

answered Aug 9, 2017 at 15:46

1 vote

Gromov Geometric Structures and Killing fields

answered Apr 25, 2015 at 9:35

1 vote

Class of analytically-integrable divergence-free vector fields?

answered Jul 15, 2015 at 10:17

1 vote

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equation for geodesics of a right invairant Finsler metric on $SU(n)$ which are parallel to a linear affine distribution

answered Aug 25, 2014 at 17:29

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998 Answers

Pushing forward a complex structure by submersion

Even Isometries in neutral Geometry

Action of orientation-preserving isometric involution on complex structure

Relation between separation of variables and Hessian properties

Metric and particular system of PDE

Unitary orbits on the Grassmann manifold of 2-planes in complex affine space

Question about the implicit function theorem. an example of a homogeneous form for which its implicit function satisfies certain conditions

Product of subgroups of $SU(8)$ algebraic set?

Beltrami equation with harmonic coefficient

Is there an area-preserving concentric diffeomorphism of the ellipse?

Maximal symmetries of complete metrics on manifolds

Injective group homomorphism on $\frac{Spin(4k+2)\times U(1)}{\mathbf{Z}/2}$ or $\frac{Spin(4k+2)\times U(1)}{\mathbf{Z}/4}\to U(2^{2k})$

Signs of curvatures of integrals lines of frames with constant principal values

Invariant measure on affine charts of complex Grassmannian

A PDE with boundary condition

Decomposition of forms on a Spin$(7)$ manifold

Parametrization of $k$-ruled submanifold: can we choose the base to be orthogonal to the rulings?

Eigenforms of the Laplacian on Lie groups

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

Characterization of bi-Hermitian structures with equal Lee forms

Holonomy of a triangle in an affine symmetric space

Qualitative analysis of the equation and symmetry (point on sphere)

Algebraic geometric conditions on the variety $V(F)$ such that the manifold defined by $F$ has nonvanishing second fundamental form?

What is the name of this geometric structure, where we identify each sphere of vision with the sphere at infinity?

Initial value problems on manifolds around submanifolds (reference)

Functions with a Jacobian whose columns are orthogonal

Finding energy minimizing path

Gromov Geometric Structures and Killing fields

Class of analytically-integrable divergence-free vector fields?

equation for geodesics of a right invairant Finsler metric on $SU(n)$ which are parallel to a linear affine distribution