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

Graduate Covariant derivative in polar coordinates

  • aPhilosopher
  • · Replies 3 ·
Replies
3

Graduate Semigeodesic parameterization I am a little confused

  • ^_^physicist
  • · Replies 1 ·
Replies
1

Graduate Proving del_X(Y)=0.5[X,Y] in Lie Group Geometry

  • sroeyz
  • · Replies 1 ·
Replies
1

Graduate Proof of Epstein Gage Lemma: Aditya Tatu

  • adityatatu
  • · Replies 1 ·
Replies
1

Graduate Can someone help me solve these problems

  • shankarvn
  • · Replies 1 ·
Replies
1

Graduate What Does It Mean for a Function to Be Continuous on a Curve?

  • T-O7
  • · Replies 1 ·
Replies
1

Graduate Geodesic in plane when metric depends on single variable?

  • rhe
  • · Replies 1 ·
Replies
1

Graduate What Does 'To Lowest Order' Mean in the Derivation of Riemann Curvature Tensor?

  • FaithSeeker
  • · Replies 2 ·
Replies
2

Graduate Product Space: Example of Unrestricted Open Set Not Open in Product Topology

  • symbol0
  • · Replies 4 ·
Replies
4

Graduate Convergent Filter Base and Continuous Function

  • jetplan
  • · Replies 1 ·
Replies
1

Graduate Why is compactness important in topology?

  • Tac-Tics
  • · Replies 14 ·
Replies
14

Graduate How Can a Function Be a Submersion on Manifolds Without Forming a Fiber Bundle?

  • Big-T
  • · Replies 2 ·
Replies
2

Graduate Is it possible to flatten the metric on a sphere?

  • marcgrr
  • · Replies 8 ·
Replies
8

Graduate Can a Wild Metric on a 2D Disc Prevent Isometric Embedding in R^3?

  • wofsy
  • · Replies 2 ·
Replies
2

Graduate Why is the subspace topology on RP^n difficult to grasp?

  • homomorphism
  • · Replies 4 ·
Replies
4

Graduate Another manifold definition deficiency?

  • zankaon
  • · Replies 5 ·
Replies
5

Graduate Integrating Tensor on Riemannian 2-Manifold at Point p

  • GPPaille
  • · Replies 3 ·
Replies
3

High School What Percentage of a Sphere's Surface Area is in Contact with the Surface?

  • kaloyan5
  • · Replies 1 ·
Replies
1

Graduate Proving a Theorem on Point-Set Topology

  • ForMyThunder
  • · Replies 3 ·
Replies
3

Graduate Lie Theory Question: Eigenvalues of Adjoint Action of H on \mathfrak{g}

  • QuarkHead
  • · Replies 1 ·
Replies
1

Graduate Calculating surface normal vector

  • andykol
  • · Replies 5 ·
Replies
5

Graduate Prove that the bth projection map is continuous and open.

  • ForMyThunder
  • · Replies 3 ·
Replies
3

Graduate Is the direct sum of two circles a covering set for the circle?

  • Tac-Tics
  • · Replies 2 ·
Replies
2

Graduate Proving the Circle's Connectedness Using Projection and Open Covers

  • PhysicalAnomaly
  • · Replies 7 ·
Replies
7

Graduate Finding the Centroid of a Spherical Crescent

  • Dehstil
  • · Replies 1 ·
Replies
1

High School Geometry - The area and the goat

  • Dafoe
  • · Replies 1 ·
Replies
1

Undergrad Introductory differential geometry text

  • studious
  • · Replies 8 ·
Replies
8

High School How To Find Sides Of Right Triangle With Known Angles And Area?

  • DaleSwanson
  • · Replies 2 ·
Replies
2

Undergrad Solving the Overlapping Squares Puzzle

  • Dafoe
  • · Replies 14 ·
Replies
14

Graduate Is a mixed second rank tensor reducible?

  • jason12345
  • · Replies 6 ·
Replies
6

Undergrad Compute Length of Helix Given Radius & Pitch

  • zd1899
  • · Replies 1 ·
Replies
1

Graduate Vector Analysis: Introduction to Tensor Notation and Index Conventions

  • Rasalhague
  • · Replies 18 ·
Replies
18

Graduate Can a Random Curve in R^n be C1 and Differentiable?

  • Dragonfall
  • · Replies 15 ·
Replies
15

High School What is the Best High School Geometry Book for Self-Teaching?

  • burgert
  • · Replies 2 ·
Replies
2

Graduate Exploring the Small Slope Approximation in Curvature and Higher Derivatives

  • hanson
  • · Replies 2 ·
Replies
2

Graduate Antisymmetrization leads to an identically vanishing tensor

  • jason12345
  • · Replies 4 ·
Replies
4

Graduate Problem on seperable banach spaces

  • logarithmic
  • · Replies 2 ·
Replies
2

Graduate Helical Pathway Movement Using Vectors, Spherical & Cylindrical Coordinates

  • Maxwellkid
  • · Replies 2 ·
Replies
2

Graduate Least Upper Bound: Definition & Subbase

  • symbol0
  • · Replies 1 ·
Replies
1

Graduate Complete Norm on M_n(R): Questions & Hints

  • nubmathie
  • · Replies 3 ·
Replies
3

Graduate Challenging Problem (Equivalent Metrics)

  • nubmathie
  • · Replies 10 ·
Replies
10

Undergrad How to Find the Intersection Line Equation of Two Non-Parallel Planes?

  • peeyush_ali
  • · Replies 1 ·
Replies
1

Graduate What Is the Exponential Map for a Manifold?

  • Tac-Tics
  • · Replies 3 ·
Replies
3

Graduate Clarifying Open Sets in Topological Spaces - Help for Confusion

  • symbol0
  • · Replies 8 ·
Replies
8

Graduate Does This Infinitesimal Mapping Transformation Look Correct?

  • jason12345
  • · Replies 1 ·
Replies
1

Graduate Normed and topological vector spaces

  • logarithmic
  • · Replies 2 ·
Replies
2

Undergrad Point inside a cube of irregular dimesnion

  • parch
  • · Replies 2 ·
Replies
2

Undergrad Solving Billiard Problem - Get Help Here

  • DavidSnider
  • · Replies 1 ·
Replies
1

Graduate Structure constants of a group antisymmetric?

  • jason12345
  • · Replies 2 ·
Replies
2

Graduate Is There a Connected Union of Open Balls in a Metric Space?

  • e(ho0n3
  • · Replies 2 ·
Replies
2

Graduate Cartesian coordinates vs. The rest of the world?

  • ManDay
  • · Replies 4 ·
Replies
4

Graduate Is Point M on the Circumscribed Circle of Square ABCD?

  • veljko_c
  • · Replies 7 ·
Replies
7

Graduate What are the consequences of weak and weak* convergence in functional analysis?

  • muzialis
  • · Replies 6 ·
Replies
6

Undergrad Find the point which lie in a 3d line.

  • parch
  • · Replies 6 ·
Replies
6

Undergrad Great Circle Question: How to Get All Points?

  • hussainak
  • · Replies 5 ·
Replies
5

Undergrad How is the Tesseract a gateway to understanding 4D space and time?

  • Maxwellkid
  • · Replies 1 ·
Replies
1

Undergrad 'Distance' between MANY points ?

  • juliette sekx
  • · Replies 13 ·
Replies
13

Graduate Elliptic Cylindrical Coordinates

  • nassboy
  • · Replies 3 ·
Replies
3

Graduate Representations of the Fundamental Group

  • olliemath
  • · Replies 1 ·
Replies
1

Graduate Unraveling Tensor Notation: Extracting Equations

  • junglebeast
  • · Replies 3 ·
Replies
3

Graduate Question about topological manifolds

  • Laur
  • · Replies 12 ·
Replies
12

Graduate Prove that x^4+y^4=1 is a manifold

  • andromeda2
  • · Replies 8 ·
Replies
8

Graduate Seeking the Shortest Closed Curve in a Homology Class

  • hyperttt
  • · Replies 5 ·
Replies
5

Graduate Mathematical Definition of Tensor?

  • LarryS
  • · Replies 7 ·
Replies
7

Graduate What Patterns Emerge When Visualizing Infinity on Non-Flat Surfaces?

  • exmachina
  • · Replies 8 ·
Replies
8

Graduate Contraction distributive property in GA

  • mnb96
  • · Replies 1 ·
Replies
1

Undergrad Is it possible to construct a circle from line segments?

  • flatmaster
  • · Replies 4 ·
Replies
4

Undergrad How Do Tensors Function in Geometric Algebra?

  • mnb96
  • · Replies 7 ·
Replies
7

Graduate Prove 1+1=2 using trigonometric functions

  • jontyjashan
  • · Replies 14 ·
Replies
14

Undergrad How should the radius MP be drawn?

  • Dafoe
  • · Replies 2 ·
Replies
2

Graduate Trying to understand isotropic vectors.

  • Spinnor
  • · Replies 3 ·
Replies
3

Undergrad Transformation of one shape into another

  • IwillBeGood
  • · Replies 4 ·
Replies
4

Graduate What is the 'Push-Forward' Function f_{*}g?

  • .....
  • · Replies 5 ·
Replies
5

Graduate Deriving Lemniscate Locus Equation: Is It a Typo?

  • ronaldor9
  • · Replies 2 ·
Replies
2

Graduate Trisecting angles in an alternate topology

  • Loren Booda
  • · Replies 2 ·
Replies
2

Graduate Using Straight-Line Homotopies to Construct Free Homotopies

  • littleHilbert
  • · Replies 2 ·
Replies
2

Graduate Is Flatness a Self-Selected Outcome in a Maximally Symmetric Universe?

  • physlad
  • · Replies 6 ·
Replies
6

High School Does a zero-dimensional point rotate when a disc spins around its center?

  • atomicgrenade
  • · Replies 3 ·
Replies
3

Undergrad Where Can I Find Open Source Software for Drawing Geometrical Pictures?

  • Kurret
  • · Replies 3 ·
Replies
3

Graduate Coordinates in hyperbolic geometry?

  • Coin
  • · Replies 6 ·
Replies
6

Undergrad Geometry in spherical coordinate

  • Asuralm
  • · Replies 2 ·
Replies
2

Undergrad Introduction to Tensor Analysis: Texts for Beginners

  • urbana
  • · Replies 4 ·
Replies
4

Graduate Understanding Covariant Derivatives Along a Curve

  • eok20
  • · Replies 1 ·
Replies
1

Graduate Differential Forms in Mathematics: Uses & Applications

  • altcmdesc
  • · Replies 1 ·
Replies
1

Graduate Position vector and tangent vector in Riemannian spaces

  • mma
  • · Replies 13 ·
Replies
13

Graduate Transformation law for Christoffel symbol of first kind

  • Will_C
  • · Replies 4 ·
Replies
4

Graduate Definition of arc length on manifolds without parametrization

  • mma
  • · Replies 36 ·
2
Replies
36

Undergrad What Are Some Recommended Textbooks on Fractals and Chaos?

  • Luris
  • · Replies 1 ·
Replies
1

Graduate When is the Inverse of a Continuous Bijection Continuous?

  • jostpuur
  • · Replies 10 ·
Replies
10

Undergrad Differential Forms: Understand Intuitively for Multivariable Calc

  • SomeGuy
  • · Replies 19 ·
Replies
19

Graduate Can a Helicoid Surface be Extended to All of S^3 in a Natural Way?

  • Spinnor
  • · Replies 1 ·
Replies
1

Graduate Is the rotation angle in Minkowski's diagram real or imaginary?

  • gene1721
  • · Replies 6 ·
Replies
6

Graduate Finding Umbilic Points of an Ellipsoid & Lines of Curvature

  • halvizo1031
  • · Replies 2 ·
Replies
2

Graduate Evaluating Surface Integral with Stokes Theorem

  • trelek2
  • · Replies 1 ·
Replies
1

Graduate Compute Surface Integral: Divergence Theorem & F=(xy^2,2y^2,xy^3)

  • trelek2
  • · Replies 1 ·
Replies
1

Graduate What is the volume of a spherical segment using Cavalieri's Principle?

  • navybuttons
  • · Replies 2 ·
Replies
2

Graduate Can Every Derivation Be Expressed as a Directional Derivative?

  • martin_blckrs
  • · Replies 11 ·
Replies
11

Graduate Characterization of paracompactness

  • quasar987
  • · Replies 6 ·
Replies
6

Graduate Why can the affinity connection be arbituarily chosen?

  • Lucien1011
  • · Replies 2 ·
Replies
2

Graduate Degree of multiplication map of a topological group

  • Jamma
  • · Replies 8 ·
Replies
8