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Forum: Topology and Advanced Geometry

General, Algebraic, and Geometric Topology; Differential Geometry and Tensor Analysis; Advanced Euclidean and Non-Euclidean Geometry, Projective Geometry

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  2. The Join of Two Circles Is the Three Sphere

    Started by caffeinemachine, October 16th, 2016 04:16
    • Replies: 5
    • Views: 505
    December 24th, 2016, 05:38 Go to last post
  3. Comparison of Topologies:basic

    Started by Arenholt, December 21st, 2016 01:20
    $tau_2=the, complement, topologies, topology, topology$
    • Replies: 8
    • Views: 165
    December 22nd, 2016, 05:32 Go to last post
  4. The Long Exact Sequence of a Certain Pair

    Started by caffeinemachine, December 17th, 2016 07:36
    exact, itimes, partial, rrightarrow, sequence
    • Replies: 0
    • Views: 54
    December 17th, 2016, 07:36 Go to last post
  5. Topological Manifolds - Charts on Real Projective Spaces

    Started by Peter, February 21st, 2016 23:06
    domain, map, phi_i, question, read
    • Replies: 1
    • Views: 357
    December 12th, 2016, 13:30 Go to last post
  6. about quotioent topology and T2.

    Started by bw0young0math, August 24th, 2016 11:29
    function, fx=0x∈a, fx=xx∈b, topology, u→b∪0
    • Replies: 0
    • Views: 273
    August 24th, 2016, 11:29 Go to last post
  7. about one-point compactification

    Started by bw0young0math, August 24th, 2016 11:19
    1∪2, a=[0, compactification, one-point, problem
    • Replies: 0
    • Views: 123
    August 24th, 2016, 11:19 Go to last post
  8. [SOLVED] Hello, I have a problem about differential geometry.

    Started by bw0young0math, August 16th, 2016 01:12
    find, normal curvature, principal, principal vector, vector
    • Replies: 2
    • Views: 226
    August 22nd, 2016, 22:50 Go to last post
  9. Normals to plane curves

    Started by evinda, April 14th, 2016 15:19
    $nt, cdot, ft+, gt$, rt=-gt
    • Replies: 6
    • Views: 391
    April 14th, 2016, 18:55 Go to last post
  10. Curvature of parabola

    Started by evinda, April 14th, 2016 13:01
    2at, curvature, fracdtds=frac14a^2, parabola, t^2+1
    • Replies: 2
    • Views: 369
    April 14th, 2016, 15:14 Go to last post
  11. [SOLVED] Circle problem

    Started by flashback, April 7th, 2016 10:02
    circles, diameter, line, passes, smaller
    • Replies: 0
    • Views: 445
    April 7th, 2016, 10:02 Go to last post
  12. Closed set relative

    Started by Julio, April 3rd, 2016 19:41
    $atimes, closed, question, relative, set
    • Replies: 1
    • Views: 335
    April 4th, 2016, 12:51 Go to last post
  13. Directional Derivatives and Derivations - Tangent Space

    Started by Peter, February 23rd, 2016 22:59
    directional, d_v|_a, lees, tangent, v_a
    • Replies: 1
    • Views: 386
    March 26th, 2016, 04:44 Go to last post
  14. Semi-axes

    Started by evinda, March 16th, 2016 16:21
    paraboloid, revolution, semi-axes, set
    • Replies: 1
    • Views: 325
    March 17th, 2016, 10:12 Go to last post
  15. Coordinates of Pushforwards ...

    Started by Peter, February 29th, 2016 03:32
    coordinates, lees, pushforwards, tangent, vectors
    • Replies: 1
    • Views: 289
    March 1st, 2016, 00:54 Go to last post
  16. Pushforwards in local coordinates

    Started by Peter, February 29th, 2016 00:56
    conversation, frac, lees, partial, pushforwards
    • Replies: 1
    • Views: 267
    February 29th, 2016, 01:59 Go to last post
    • Replies: 4
    • Views: 409
    February 29th, 2016, 01:09 Go to last post
    • Replies: 2
    • Views: 319
    February 23rd, 2016, 22:32 Go to last post
  17. Charts on Topological Manifolds - Simple Notational Issue

    Started by Peter, February 20th, 2016 22:33
    1.1.3, definition, issue, m^m, relationship
    • Replies: 2
    • Views: 422
    February 20th, 2016, 23:33 Go to last post
    • Replies: 0
    • Views: 366
    February 19th, 2016, 03:16 Go to last post
    • Replies: 0
    • Views: 361
    February 18th, 2016, 01:30 Go to last post
  18. A general 2-form - Colley Chapter 8, Section 8.1

    Started by Peter, February 7th, 2016 04:27
    2-form, colley, general, omega, wedge
    • Replies: 1
    • Views: 416
    February 16th, 2016, 14:26 Go to last post
  19. Problem 10 of Section 1.2 from Hatcher

    Started by caffeinemachine, February 10th, 2016 00:52
    • Replies: 0
    • Views: 336
    February 10th, 2016, 00:52 Go to last post
  20. Exercise on 1-Forms - O'Neill Exercises 1.5 No. 7(a)

    Started by Peter, February 3rd, 2016 00:36
    1.5, exercise, oneill, section, shown
    • Replies: 1
    • Views: 307
    February 6th, 2016, 23:59 Go to last post

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