User Robert Bryant

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Parallel transport as algebra isomorphism

answered Apr 6, 2017 at 13:28

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Where can I find details of Elie Cartan's thesis?

answered Oct 19, 2016 at 9:44

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A tricky tractrix question about vertical tangents

answered Nov 8, 2015 at 22:06

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Parametrization of positive semidefinite matrices

answered Dec 3, 2015 at 12:38

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The space of positive definite orthogonal matrices

answered Dec 20, 2015 at 9:47

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Equivariant Almost Complex Structures on the Full Flag Manifolds

answered Aug 18, 2015 at 16:28

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Examples of famous 'workhorse' theorems

answered Jul 26, 2014 at 16:14

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What it is the volume of the unit ball section of the cone of positive definite matrices?

answered May 2, 2014 at 11:44

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Formula for the Perimeter of a spherical triangle?

answered Dec 1, 2014 at 12:40

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Explicit metrics

answered Jun 6, 2011 at 19:46

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$G$-structures of finite type.

answered May 5, 2011 at 23:56

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Any help on one ODE

answered Dec 27, 2011 at 17:53

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Which vector bundle are the Christoffel symbols sections of?

answered Feb 4, 2012 at 13:33

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Maurer-Cartan structure equation derivation

answered Jul 27, 2012 at 14:55

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Triality of Spin(8)

answered Dec 21, 2012 at 15:28

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Scalar curvature notion for Cartan connections

answered Feb 14, 2013 at 13:19

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what prevents a manifold to be symplectic?

answered Feb 18, 2013 at 0:56

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Metric on tangent bundle

answered Feb 18, 2013 at 13:12

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Recognizing the stablizer of a degenerate three forms in six dimension

answered Feb 19, 2013 at 15:53

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Quintic polynomial solution by Jacobi Theta function.

answered Jun 16, 2013 at 12:57

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Invariant differential operators on real Grassmannians

answered Aug 10, 2013 at 11:51

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Holonomy group of Enriques surface

answered Dec 15, 2013 at 11:13

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When a Riemannian manifold is of Hessian Typ

answered Feb 19, 2013 at 16:23

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Why the sectional curvatures assume maximum on holomorphic planes for positively curved Kaehler manifold?

answered Dec 25, 2012 at 14:41

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Kähler form on complex Lie group

answered Dec 1, 2012 at 19:48

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diagonalizability of the curvature operator

answered Nov 25, 2012 at 16:42

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Matrix representation for $F_4$

answered Jun 13, 2012 at 16:50

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What structure on the second order cotangent bundle ?

answered Aug 29, 2012 at 12:46

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generalisation of Cauchy-Riemann equations to 3D

answered May 14, 2012 at 20:57

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Formality of de Rham algebra for two-dimensional closed surfaces

answered Oct 4, 2011 at 12:48

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998 Answers

Parallel transport as algebra isomorphism

Where can I find details of Elie Cartan's thesis?

A tricky tractrix question about vertical tangents

Parametrization of positive semidefinite matrices

The space of positive definite orthogonal matrices

Equivariant Almost Complex Structures on the Full Flag Manifolds

Examples of famous 'workhorse' theorems

What it is the volume of the unit ball section of the cone of positive definite matrices?

Formula for the Perimeter of a spherical triangle?

Explicit metrics

$G$-structures of finite type.

Any help on one ODE

Which vector bundle are the Christoffel symbols sections of?

Maurer-Cartan structure equation derivation

Triality of Spin(8)

Scalar curvature notion for Cartan connections

what prevents a manifold to be symplectic?

Metric on tangent bundle

Recognizing the stablizer of a degenerate three forms in six dimension

Quintic polynomial solution by Jacobi Theta function.

Invariant differential operators on real Grassmannians

Holonomy group of Enriques surface

When a Riemannian manifold is of Hessian Typ

Why the sectional curvatures assume maximum on holomorphic planes for positively curved Kaehler manifold?

Kähler form on complex Lie group

diagonalizability of the curvature operator

Matrix representation for $F_4$

What structure on the second order cotangent bundle ?

generalisation of Cauchy-Riemann equations to 3D

Formality of de Rham algebra for two-dimensional closed surfaces