• Thumbnail for Hopf fibration
    In differential topology, the Hopf fibration (also known as the Hopf bundle or Hopf map) describes a 3-sphere (a hypersphere in four-dimensional space)...
    36 KB (4,799 words) - 18:21, 21 August 2024
  • : 198  The Hopf fibration S 1 → S 3 → S 2 {\displaystyle S^{1}\to S^{3}\to S^{2}} is a non-trivial fiber bundle and, specifically, a Serre fibration. A mapping...
    18 KB (3,457 words) - 15:18, 24 July 2024
  • Thumbnail for 600-cell
    All the fiber bundles are aspects of the same discrete Hopf fibration, because the fibration is the various expressions of the same distinct left-right...
    217 KB (28,934 words) - 10:59, 1 August 2024
  • Thumbnail for Heinz Hopf
    time. At this time Hopf discovered the Hopf invariant of maps S 3 → S 2 {\displaystyle S^{3}\to S^{2}} and proved that the Hopf fibration has invariant 1...
    11 KB (970 words) - 05:12, 25 July 2024
  • {\displaystyle d_{k}:E_{p,q}^{k}\to E_{p-k,q-1+k}^{k}} . Recall that the Hopf fibration is given by S 1 ↪ S 3 → S 2 {\displaystyle S^{1}\hookrightarrow S^{3}\to...
    12 KB (2,641 words) - 13:35, 29 February 2024
  • Thumbnail for Homotopy groups of spheres
    The first such surprise was the discovery of a mapping called the Hopf fibration, which wraps the 3-sphere S3 around the usual sphere S2 in a non-trivial...
    82 KB (7,972 words) - 00:30, 24 August 2024
  • Thumbnail for Villarceau circles
    the intersection curve is real. The torus plays a central role in the Hopf fibration of the 3-sphere, S3, over the ordinary sphere, S2, which has circles...
    11 KB (1,494 words) - 23:51, 13 November 2023
  • Thumbnail for 3-sphere
    d\xi _{1}\wedge d\xi _{2}.} To get the interlocking circles of the Hopf fibration, make a simple substitution in the equations above z 1 = e i ( ξ 1 +...
    28 KB (4,027 words) - 13:24, 23 July 2024
  • Example: the Hopf fibration. Let B equal S 2 {\displaystyle S^{2}} and E equal S 3 . {\displaystyle S^{3}.} Let p be the Hopf fibration, which has fiber...
    20 KB (3,417 words) - 21:07, 23 November 2023
  • Thumbnail for Hopf link
    a Hopf link. This was Hopf's motivation for studying the Hopf link: because each two fibers are linked, the Hopf fibration is a nontrivial fibration. This...
    9 KB (892 words) - 16:20, 15 November 2022
  • 4
    four-group is the smallest noncyclic group,... Shokurov, A.V. (2002). "Hopf fibration". In Michiel Hazewinkel (ed.). Encyclopedia of Mathematics. Helsinki:...
    69 KB (7,105 words) - 17:24, 29 August 2024
  • Thumbnail for Bloch sphere
    space C 2 {\displaystyle \mathbb {C} ^{2}} to the Bloch sphere is the Hopf fibration, with each ray of spinors mapping to one point on the Bloch sphere....
    23 KB (3,793 words) - 22:40, 16 July 2024
  • Thumbnail for 24-cell
    in a Hopf fibration. Four cell-disjoint 6-cell rings comprise the same discrete fibration. The 24-cell has four such discrete hexagonal fibrations, and...
    237 KB (31,111 words) - 03:39, 24 July 2024
  • Thumbnail for Navier–Stokes equations
    singularities comes from considering the flow along the lines of a Hopf fibration. Let r {\textstyle r} be a constant radius of the inner coil. One set...
    97 KB (15,331 words) - 02:55, 29 August 2024
  • Hopf fibration in the case r = i; other vectors give isomorphic, but not identical fibrations. In 2003 David W. Lyons wrote "the fibers of the Hopf map...
    19 KB (2,804 words) - 22:37, 12 July 2024
  • Thumbnail for Fiber bundle
    Fiber bundle (redirect from Fibre bundle)
    then the quotient map is a fiber bundle. One example of this is the Hopf fibration, S 3 → S 2 {\displaystyle S^{3}\to S^{2}} , which is a fiber bundle...
    29 KB (4,084 words) - 09:22, 2 April 2024
  • Thumbnail for Boerdijk–Coxeter helix
    around each other naturally due to the Hopf fibration. The collective of edges forms another discrete Hopf fibration of 12 rings with 10 vertices each. These...
    10 KB (976 words) - 21:35, 11 April 2024
  • known as the Bloch sphere or, equivalently, the Riemann sphere. See Hopf fibration for details of the projectivization construction in this case. The Cartesian...
    5 KB (801 words) - 22:06, 29 May 2024
  • Thumbnail for Complex projective space
    be regarded as a family of circles parametrized by CPn: this is the Hopf fibration. Complex projective space carries a (Kähler) metric, called the Fubini–Study...
    26 KB (3,915 words) - 23:24, 10 May 2024
  • the circular fibers of a Hopf fibration SU(2) → S2. As such, the Berger metrics can also be constructed via the Hopf fibration, by scaling the tangent...
    9 KB (1,194 words) - 19:31, 13 July 2024
  • trivial. Recall there is a spectral sequence for any Serre fibration, such as the fibration K ( π n + 1 ( X ) , n + 1 ) ≃ F n + 1 → S n + 1 n → S n n ≃...
    19 KB (3,645 words) - 16:45, 22 May 2024
  • Thumbnail for 120-cell
    skew polygons is a discrete Hopf fibration of the 120-cell (just as their 20 dual 30-cell rings are a discrete fibration of the 600-cell). The Petrie...
    132 KB (14,816 words) - 03:40, 24 July 2024
  • Thumbnail for Duocylinder
    of 4, the number of dimensions. Clifford torus Duoprism Flat torus Hopf fibration Manifold The Fourth Dimension Simply Explained, Henry P. Manning, Munn...
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  • action of the modular group. It also provides a canonical example of Hopf fibration, where the geodesic flow induced by the linear fractional transformation...
    12 KB (1,679 words) - 18:03, 7 June 2024
  • conjecture. He also established the conjecture for perturbations of the Hopf fibration. The conjecture was disproven in 1974 by Paul Schweitzer, who exhibited...
    4 KB (442 words) - 21:06, 8 November 2023
  • Thumbnail for Hopfion
    not all preimages of magnetisation have a nonzero linking. Skyrmion Hopf fibration Faddeev L, Niemi AJ (1997). "Stable knot-like structures in classical...
    9 KB (947 words) - 07:11, 3 June 2024
  • to circle bundles. There are some celebrated ones, for example the Hopf fibrations of spheres to spheres. In algebraic geometry, an invertible sheaf (i...
    11 KB (1,612 words) - 01:22, 27 April 2024
  • group of rotations. This quotient is realized explicitly by the famous Hopf fibration S1 → S2n+1 → CPn, the fibers of which are among the great circles of...
    27 KB (5,292 words) - 23:28, 13 May 2024
  • Paul Dirac back in 1931 and Hopf fibration, a fibration of a 3-sphere proposed io the same year by mathematician Heinz Hopf. Mathematician Jim Simons discussing...
    11 KB (1,216 words) - 08:53, 7 August 2024
  • Thumbnail for Brunnian link
    "standard" braid corresponding to the Borromean rings gives rise to the Hopf fibration S3 → S2, and iteration of this (as in everyday braiding) is likewise...
    10 KB (1,149 words) - 20:18, 29 May 2024