On Quotients of Hopf Fibrations*

نویسندگان

  • Bonaventure Loo
  • Alberto Verjovsky
  • ALBERTO VERJOVSKY
چکیده

It was shown in [LV] that there are no PL-bundles of the form CPh ↪→ CPh → S where CPh denotes a PL-manifold homotopy equivalent to CP. It was stated at the end of [LV] that the homotopy analog of a) does not exist. In [U], Ucci showed that there exists no Hurewicz fibration of the form CP ↪→ CP → S. However, as stated, this was not the strongest possible result. Let HCP, HCaP and S h denote spaces homotopy equivalent to complex projective n-space CP, the Cayley plane CaP and S respectively. In this paper we adapt the proof of Jack Ucci [U] to show:

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Geometry of Entangled States , Bloch Spheres and Hopf Fibrations

We discuss a generalization to 2 qubits of the standard Bloch sphere representation for a single qubit, in the framework of Hopf fibrations of high dimensional spheres by lower dimensional spheres. The single qubit Hilbert space is the 3-dimensional sphere S. The S base space of a suitably oriented S Hopf fibration is nothing but the Bloch sphere, while the circular fibres represent the qubit o...

متن کامل

Two and Three Qubits Geometry and Hopf Fibrations

This paper reviews recent attempts to describe the twoand threequbit Hilbert space geometries with the help of Hopf fibrations. In both cases, it is shown that the associated Hopf map is strongly sensitive to states entanglement content. In the two-qubit case, a generalization of the one-qubit celebrated Bloch sphere representation is described.

متن کامل

R-matrices and Hopf Algebra Quotients

We study a natural construction of Hopf algebra quotients canonically associated to an R-matrix in a finite dimensional Hopf algebra. We apply this construction to show that a quasitriangular Hopf algebra whose dimension is odd and square-free is necessarily cocommutative.

متن کامل

A Note on Extending Hopf Actions to Rings of Quotients of Module Algebras

Given a Hopf algebra H and an H-module algebra A it is often important to be able of extending the H-action from A to a localisation of A. In this paper we are going to discuss sufficient conditions to extend Hopf actions as well as to characterise those localisations where the action can be extended. Our particular interest lies in the maximal ring of quotients of A.

متن کامل

The Topological Blaschke Conjecture I: Great Circle Fibrations of Spheres

We construct an explicit diffeomorphism taking any fibration of a sphere by great circles into the Hopf fibration. We use pure geometry, and no topology, to carry out the construction—indeed the diffeomorphism is a local (differential) invariant, algebraic in derivatives.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1994