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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

  1. Normal Thread Normal Threads

  2. Quotient Maps

    Started by topsquark, February 20th, 2018 04:23
    equivalence, map, quotient, space, topology
    • Replies: 1
    • Views: 67
    February 20th, 2018, 08:40 Go to last post
  3. Square torus, again

    Started by Joppy, February 5th, 2018 19:18
    bug, half, sees, square, torus
    • Replies: 5
    • Views: 122
    February 7th, 2018, 03:22 Go to last post
  4. Equivalence of the following two terms

    Started by Mharris, January 9th, 2018 00:32
    $j/beta, $l_xj=0$, condition, equivalence, equivalent
    • Replies: 7
    • Views: 233
    January 11th, 2018, 11:48 Go to last post
  5. Euler's formula?

    Started by Joppy, November 27th, 2017 19:11
    2v_4, 3f_5, faces, number, polyhedron
    • Replies: 7
    • Views: 232
    December 28th, 2017, 10:19 Go to last post
  6. Jacobian of the Transformation

    Started by amr21, November 28th, 2017 06:53
    find, jacobian, online, transformation, videos
    • Replies: 1
    • Views: 74
    November 28th, 2017, 08:39 Go to last post
  7. Mosers worm problem. I need a theorem.

    Started by Pereskia, November 16th, 2017 09:32
    cover, mosers, problem, shape, worm
    • Replies: 0
    • Views: 97
    November 16th, 2017, 09:32 Go to last post
  8. Why is this the condition of collinearity?

    Started by mathmari, July 12th, 2017 21:51
    • Replies: 6
    • Views: 367
    July 14th, 2017, 00:06 Go to last post
  9. Closed set relative

    Started by Julio, April 3rd, 2016 19:41
    $atimes, closed, question, relative, set
    • Replies: 2
    • Views: 571
    July 7th, 2017, 13:20 Go to last post
  10. definition of quotient topology

    Started by Muon, May 21st, 2017 10:59
    $bigcup, $tau_y=leftusubseteq, =leftbigcup, ybigcup, [a]in
    • Replies: 1
    • Views: 329
    May 21st, 2017, 12:25 Go to last post
  11. when is a finite topological space path-connected?

    Started by Muon, May 15th, 2017 20:36
    finite, map, path-connected, space, topological
    • Replies: 1
    • Views: 288
    May 16th, 2017, 00:17 Go to last post
  12. first countable spaces

    Started by hksuraj, February 12th, 2017 07:12
    countable, delta, prove, set, set?how
    • Replies: 2
    • Views: 392
    March 23rd, 2017, 01:50 Go to last post
  13. Closure of an Set

    Started by Julio, January 31st, 2017 18:21
    closure, text, ucap, uintau, xin
    • Replies: 3
    • Views: 397
    February 1st, 2017, 17:25 Go to last post
  14. The Join of Two Circles Is the Three Sphere

    Started by caffeinemachine, October 16th, 2016 04:16
    • Replies: 5
    • Views: 1,293
    December 24th, 2016, 05:38 Go to last post
  15. Comparison of Topologies:basic

    Started by Arenholt, December 21st, 2016 01:20
    $tau_2=the, complement, topologies, topology, topology$
    • Replies: 8
    • Views: 603
    December 22nd, 2016, 05:32 Go to last post
  16. The Long Exact Sequence of a Certain Pair

    Started by caffeinemachine, December 17th, 2016 07:36
    exact, itimes, partial, rrightarrow, sequence
    • Replies: 0
    • Views: 256
    December 17th, 2016, 07:36 Go to last post
  17. Topological Manifolds - Charts on Real Projective Spaces

    Started by Peter, February 21st, 2016 23:06
    domain, map, phi_i, question, read
    • Replies: 1
    • Views: 640
    December 12th, 2016, 13:30 Go to last post
  18. 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: 528
    August 24th, 2016, 11:29 Go to last post
  19. about one-point compactification

    Started by bw0young0math, August 24th, 2016 11:19
    1∪2, a=[0, compactification, one-point, problem
    • Replies: 0
    • Views: 331
    August 24th, 2016, 11:19 Go to last post
  20. [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: 563
    August 22nd, 2016, 22:50 Go to last post
  21. Normals to plane curves

    Started by evinda, April 14th, 2016 15:19
    $nt, cdot, ft+, gt$, rt=-gt
    • Replies: 6
    • Views: 716
    April 14th, 2016, 18:55 Go to last post
  22. Curvature of parabola

    Started by evinda, April 14th, 2016 13:01
    2at, curvature, fracdtds=frac14a^2, parabola, t^2+1
    • Replies: 2
    • Views: 1,240
    April 14th, 2016, 15:14 Go to last post
  23. [SOLVED] Circle problem

    Started by flashback, April 7th, 2016 10:02
    circles, diameter, line, passes, smaller
    • Replies: 0
    • Views: 716
    April 7th, 2016, 10:02 Go to last post
  24. 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: 707
    March 26th, 2016, 04:44 Go to last post

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Top 74 Thread Starters For "Topology and Advanced Geometry"

RankUser NamePercentage Of TotalThreadsMost Recent Thread
1Peter27.3110Coordinates of Pushforwards .....
2mathmari15.663Why is this the condition of c...
3caffeinemachine9.739A Step in Calculating the Cup ...
4Poirot5.020topology question: bounded lin...
5evinda3.514Normals to plane curves
6dwsmith2.711connect subsets
7Amer2.08Limit point(Cluster point) of ...
8Siron1.77Borel set
8bw0young0math1.77about quotioent topology and T...
8smile1.77Quotient maps
9dray1.25Result from a metric linear sp...
9ModusPonens1.25Is this formula correct?
9topsquark1.25Quotient Maps
10oblixps1.04the open ball of radius 1 is h...
10ianchenmu1.04A proof about the relation bet...
10Fermat1.04Fixed point theorem
10Jakob1.04Stokes theorem with singularit...
10mathgirl1.04Hausdorff, regular, normal spa...
11Evgeny.Makarov0.73Delaunay triangulation
11bugatti790.73Obtaining the surface normal o...
11Sudharaka0.73Closed, Symmetric, Convex Subs...
11Fantini0.73Continuity preserving Lindelöf...
11ZaidAlyafey0.73Mobius band and space of all l...
11Mesfer Alqahtan0.73Question about a Regular Hausd...
11Impo0.73Cross ratio
11Boromir0.73compact subset of R
11ozkan120.73closure of set
12hmmm160.52how that the Baumslag–Solitar ...
12Megus0.52Continuity stuff
12Jack0.52If X×Y is Hausdorff, then is X...
12Ubistvo0.52Complete metric space
12Arnold0.52Hyperbolic geometry - isometry
12Adam0.52Prove that the Gauss Map of th...
12Julio0.52Closure of an Set
12dingo0.52Difference between a vector an...
12Joppy0.52Square torus, again
12Muon0.52definition of quotient topolog...
13Chris L T5210.21Hodge Star Operator on a Riema...
13bkarpuz0.21The set of piecewise continuou...
13Fernando Revilla0.21A subspace of a Banach space i...
13MikeD0.21Proving a continuous function ...
13Lolyta0.21Proof it is a base in a metric...
13OhMyMarkov0.21Rudin's Proof -- The Closure o...
13Dense0.21Compactness, limit point and s...
13Larry0.21Invariant question
13Mathelogician0.21Some very basic questions on t...
13mm12390.21Proof that every open set in R...
13Barioth0.21Do carmo: 3.2 E1- Hyperbolic p...
13Andrei0.21common perpendicular of two di...
13johng0.21A dense subset of [0,1]
13Carla19850.21Show triangles are similar
13ryo00710.21Question about notation from M...
13mathworker0.21Geometry of nth dimension
13aoun10.21Prove that graph of D is close...
13rcharity0.21Continuous & open map
13onie mti0.21Topology n R^p...boundary poin...
13simo0.21Boundary Points
13filipparker0.21simple closed curve is nullhom...
13Samwise0.21Higher order tangent bundle
13panicnerd0.21Hausdorff spaces and continuou...
13Ganesh Ujwal0.21how to show this example?
13rayadam0.21I need a math genius in spheri...
13azoroth0.21the multiplication of delta fu...
13nivek0000.21Intro. to Projective Geometry ...
13aleksa9940.21quadric surface equations
13flashback0.21Circle problem
13amr210.21Jacobian of the Transformation
13Arenholt0.21Comparison of Topologies:basic
13hksuraj0.21first countable spaces
13Pereskia0.21Mosers worm problem. I need a ...
13Mharris0.21Equivalence of the following t...
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