Differential Geometry Forum

Join experts in discussing differential geometry topics. This includes manifolds, Tensors and forms. Connections and curvature also. Differential and algebraic topology discussion.

Threads

  • Featured

Graduate Best visualization of SO(3)

  • Matterwave
  • · Replies 39 ·
2
Replies
39

Graduate On covariance of the Lagrange equations

  • wrobel
  • · Replies 1 ·
Replies
1

Undergrad Do non-orthogonal coordinate systems mean dependent coordinates?

  • gmmaro
  • · Replies 8 ·
Replies
8

Graduate Nonautonomous Lie derivative

  • wrobel
  • · Replies 0 ·
Replies
0

Graduate Equivalent definitions of tensor field

  • cianfa72
  • · Replies 5 ·
Replies
5

Graduate Strain Tensor Based on Clifford Algebra

  • Arash1950
  • · Replies 3 ·
Replies
3

Undergrad Differential Geometry with GNU/Linux

  • diegogarcia
  • · Replies 9 ·
Replies
9

Undergrad About the maximal extension of local charts on a manifold

  • cianfa72
  • · Replies 8 ·
Replies
8

Graduate Injective immersion and embedding

  • Korybut
  • · Replies 2 ·
Replies
2

Undergrad Geodesics on Ellis wormhole differ from Wikipedia with parallel transport

  • Tachytaenius
  • · Replies 12 ·
Replies
12

Undergrad Compact manifold cannot be represented by (single) parametric equation

  • elias001
  • · Replies 5 ·
Replies
5

Undergrad ##C^{\infty}##-module of smooth vector fields can lack a basis

  • cianfa72
  • · Replies 9 ·
Replies
9

Undergrad Round 3-sphere symmetries as subspace of 4D Euclidean space

  • cianfa72
  • · Replies 6 ·
Replies
6

Undergrad Differential structures over a topological manifold

  • cianfa72
  • · Replies 4 ·
Replies
4

Undergrad ##SO(3)## topology

  • cianfa72
  • · Replies 29 ·
Replies
29

Undergrad Pseudo-Riemaniann isometries

  • cianfa72
  • · Replies 4 ·
Replies
4

Undergrad Spherically symmetric manifold

  • cianfa72
  • · Replies 10 ·
Replies
10

Undergrad Smooth Manifold Chart Lemma

  • cianfa72
  • · Replies 4 ·
Replies
4

Undergrad Vector fields wedge product vs covector field

  • cianfa72
  • · Replies 11 ·
Replies
11

Undergrad Definition of a Manifold

  • littlemathquark
  • · Replies 15 ·
Replies
15

Undergrad Why add partial derivatives instead of combining them geometrically

  • nomadreid
  • · Replies 5 ·
Replies
5

Undergrad Definition of inertia tensor from a differential geometry viewpoint

  • cianfa72
  • · Replies 15 ·
Replies
15

Undergrad Closed implies exact (differential 1-forms on R^2)

  • PhDeezNutz
  • · Replies 6 ·
Replies
6

Undergrad Transformation of second rank tensor

  • LightPhoton
  • · Replies 4 ·
Replies
4

Undergrad Differential structure on topological manifolds of dimension <= 3

  • cianfa72
  • · Replies 11 ·
Replies
11

Undergrad Maximal atlas of topological manifold

  • cianfa72
  • · Replies 37 ·
2
Replies
37

Undergrad Galilean spacetime as a fiber bundle

  • cianfa72
  • · Replies 16 ·
Replies
16

Undergrad 2-sphere with any topology can't be homeomorphic to the plane

  • cianfa72
  • · Replies 5 ·
Replies
5

Undergrad Must a Smooth Section Over a Mobius Strip Take Value Zero at Some Point?

  • cianfa72
  • · Replies 8 ·
Replies
8

Undergrad Properties of the initial topology from a topological manifold

  • cianfa72
  • · Replies 8 ·
Replies
8

Graduate Bachman : A geometric approach to differential forms

  • mrslamovics
  • · Replies 2 ·
Replies
2

Undergrad Poincare lemma for one-form on ##\mathbb R^2 \backslash \{ 0 \}##

  • cianfa72
  • · Replies 15 ·
Replies
15

High School Axes on a hyperbolic plane

  • BerryGo
  • · Replies 4 ·
Replies
4

Undergrad On the definition of canonical coordinates in phase space

  • cianfa72
  • · Replies 9 ·
Replies
9

Undergrad Vectors vs covectors and metric tensor notation

  • Rick16
  • · Replies 58 ·
2
Replies
58

Undergrad Induced metric in general case

  • gerald V
  • · Replies 1 ·
Replies
1

Undergrad Dot product between basis vectors and dual basis vectors

  • Rick16
  • · Replies 17 ·
Replies
17

Graduate Is the Lie derivative a tensor itself?

  • spinless
  • · Replies 4 ·
Replies
4

Undergrad Is there a consensus about the meaning of the Christoffel symbols' indices?

  • Rick16
  • · Replies 2 ·
Replies
2

Undergrad Why do triangle projections equal area times direction cosines?

  • davidwinth
  • · Replies 3 ·
Replies
3

Undergrad Inner product of two tensors

  • Rick16
  • · Replies 6 ·
Replies
6

Undergrad Does the gradient map from R^n to R^n for a scalar function?

  • littlemathquark
  • · Replies 6 ·
Replies
6

Graduate Understanding: double of conformally flat manifold is conformally flat

  • kappaka
  • · Replies 1 ·
Replies
1

Undergrad How to find inverse coordinates?

  • Rick16
  • · Replies 7 ·
Replies
7

Undergrad Proving scalar product consistency for df using the chain rule

  • cianfa72
  • · Replies 36 ·
2
Replies
36

Undergrad Trying to learn tensor algebra

  • Rick16
  • · Replies 8 ·
Replies
8

Undergrad Notion of congruent curve along a vector field

  • cianfa72
  • · Replies 1 ·
Replies
1

Undergrad Dirichlet problem boundary conditions

  • cianfa72
  • · Replies 4 ·
Replies
4

Undergrad Which basis-forms are pseudo-tensors?

  • SiennaTheGr8
  • · Replies 3 ·
Replies
3

Graduate Alternative topology of our 3D space

  • kochanskij
  • · Replies 1 ·
Replies
1

Undergrad Manifold hypersurface foliation and Frobenius theorem

  • cianfa72
  • · Replies 73 ·
3
Replies
73

Undergrad SL(n,R) Lie group as submanifold of GL(n,R)

  • cianfa72
  • · Replies 36 ·
2
Replies
36

Undergrad Grassmannian as smooth manifold

  • Korybut
  • · Replies 6 ·
Replies
6

Undergrad Can covariant derivative tensorialness be derived?

  • Pencilvester
  • · Replies 18 ·
Replies
18

Undergrad Frobenius theorem applied to frame fields

  • cianfa72
  • · Replies 30 ·
2
Replies
30

Undergrad 2-sphere manifold intrinsic definition

  • cianfa72
  • · Replies 44 ·
2
Replies
44

Undergrad Radius of curvature formula when the denominator = 0

  • nomadreid
  • · Replies 18 ·
Replies
18

Undergrad Quotient law and the curl in index notation

  • SiennaTheGr8
  • · Replies 1 ·
Replies
1

Undergrad What is the difference between Gaussian and sectional curvature?

  • PhysicsRock
  • · Replies 1 ·
Replies
1

Undergrad Do gradient and curl only differ by a Levi-Cavita tensor?

  • FQVBSina_Jesse
  • · Replies 23 ·
Replies
23

High School Hopf fibration, Bloch sphere and quantum rotations - interactive site

  • vladramen
  • · Replies 1 ·
Replies
1

Undergrad 3-parameter group of symmetries on the plane

  • cianfa72
  • · Replies 51 ·
2
Replies
51

Undergrad Approximating smooth curved manifolds with "local bits" of curvature?

  • Spinnor
  • · Replies 5 ·
Replies
5

Undergrad Conformal flatness of ellipsoid

  • ergospherical
  • · Replies 0 ·
Replies
0

Undergrad Flat surface to curved surface

  • anilswipe
  • · Replies 4 ·
Replies
4

Undergrad Definition of manifolds with boundary

  • PhysicsRock
  • · Replies 3 ·
Replies
3

Undergrad When can I commute the 4-gradient and the "space-time" integral?

  • tannhaus
  • · Replies 2 ·
Replies
2

Undergrad Spherical trig - sphere radius from 6 lengths

  • Vanadium 50
  • · Replies 8 ·
Replies
8

Undergrad Identification tangent bundle over affine space with product bundle

  • cianfa72
  • · Replies 13 ·
Replies
13

Undergrad Induced orientation on boundary of ##\mathbb{H}^n## in ##\mathbb{R}^n##

  • PhysicsRock
  • · Replies 6 ·
Replies
6

Undergrad Resources on the Derivation of generalized Stokes' theorem

  • PhysicsRock
  • · Replies 11 ·
Replies
11

Graduate How to switch from tensor products to wedge product

  • victorvmotti
  • · Replies 5 ·
Replies
5

Undergrad A way to comprehend the geometry of a hypercube

  • Warp
  • · Replies 2 ·
Replies
2

High School What would need to be possible to make a cube of circles?

  • SheldonCooper13
  • · Replies 4 ·
Replies
4

Undergrad Degrees of Freedom in Lagrangian Mechanics for a Fractal Path

  • Pikkugnome
  • · Replies 2 ·
Replies
2

Undergrad Is Diagrammatic Tensor Notation Widely Used in Mathematics?

  • Hill
  • · Replies 33 ·
2
Replies
33

Graduate 3-connection on nontrivial topological 3-manifold

  • polology
  • · Replies 11 ·
Replies
11

Undergrad Question regarding the 3-form ##dx^i \wedge dx^j \wedge dx^k##

  • PhysicsRock
  • · Replies 13 ·
Replies
13

Undergrad Converse of focus-directrix property of conic sections

  • arham_jain_hsr
  • · Replies 2 ·
Replies
2

Undergrad Unwrapping a curved wood surface for laser cutting

  • OlarFin
  • · Replies 5 ·
Replies
5

Undergrad Local trivialization and group action in principal bundles

  • Korybut
  • · Replies 9 ·
Replies
9

Undergrad Definition of tangent vector on smooth manifold

  • cianfa72
  • · Replies 21 ·
Replies
21

Undergrad How to apply tensor transformation rule

  • guv
  • · Replies 9 ·
Replies
9

Graduate What subset of a 3D space can be addressed by a single chart?

  • gnnmartin
  • · Replies 10 ·
Replies
10

Undergrad Frobenius theorem for differential one forms

  • cianfa72
  • · Replies 6 ·
Replies
6

Undergrad Dirac delta function in 2d polar coordinates

  • Trollfaz
  • · Replies 4 ·
Replies
4

Graduate Differential structure of the group of automorphism of a Lie group

  • padawan
  • · Replies 0 ·
Replies
0

Undergrad Invariance of a tensor of order 2

  • Thytanium
  • · Replies 2 ·
Replies
2

Graduate What Is the Gauss Embedding Theorem Mentioned in the Video Talk?

  • The Tortoise-Man
  • · Replies 1 ·
Replies
1

Undergrad Where do self wedge product terms vanish in Chern-Simons theory

  • thatboi
  • · Replies 13 ·
Replies
13

Undergrad Rewriting Equation of Motion in terms of Dual Fields (Chern-Simons)

  • thatboi
  • · Replies 2 ·
Replies
2

Undergrad Contact manifold and Darboux's theorem

  • cianfa72
  • · Replies 14 ·
Replies
14

Undergrad Differential operator vs one-form (covector field)

  • cianfa72
  • · Replies 10 ·
Replies
10

High School East-West error at regular points on the Azimuthal Equidistant Map

  • Miles Behind
  • · Replies 3 ·
Replies
3

Undergrad How do I parametrize a conical/cylindrical surface in cylindrical unit vectors?

  • Trollfaz
  • · Replies 7 ·
Replies
7

Undergrad How can a sphere be transformed using differential geometry?

  • James1355
  • · Replies 17 ·
Replies
17

Undergrad Miller indices and periodic boundary conditions

  • Spathi
  • · Replies 0 ·
Replies
0

Undergrad Trouble with metric. Holonomic basis and the normalised basis

  • GR191511
  • · Replies 6 ·
Replies
6

Undergrad Do two reflections compose to a rotation in 3D?

  • nomadreid
  • · Replies 2 ·
Replies
2

High School How to find the infinitesimal coordinate transform along a hyperbola?

  • Sciencemaster
  • · Replies 1 ·
Replies
1