Homotopy classification of $$\textit{PD}_4$$ PD 4 -complexes relative an order relation

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

An Approach to Homotopy Classification of Links

A reformulation and refinement of the ¿t-invariants of Milnor are used to give a homotopy classification of 4 component links and suggest a possible general homotopy classification. The main idea is to use the (reduced) group of a link and its "geometric" automorphisms to define the precise indeterminacy of these invariants. Introduction. In 1954, Milnor [M] introduced the concept of link homot...

متن کامل

Realization of Homotopy Invariants by Pd–pairs

Up to oriented homotopy equivalence, a PD–pair (X, ∂X) with aspherical boundary components is uniquely determined by the Π1–system {κi : Π1(∂Xi, ∗) → Π1(X, ∗)}i∈J , the orientation character ωX ∈ H(X;Z/2Z) and the image of the fundamental class [X, ∂X] ∈ H3(X, ∂X;Z) under the classifying map [3]. We call the triple ({κi}i∈J , ωX , [X, ∂X]) the fundamental triple of the PD–pair (X, ∂X). Using Pe...

متن کامل

Anti-tumor activity of Fe (III), Co(II) and Pd(II) complexes of N3-{phenyl [(4-pyridylcarbonyl)amino]methyl}

An anti-tumor compound as N3-{phenyl [(4-pyridylcarbonyl) amino] methyl} weresynthesized and identified (NPPA). Fe (III), Co(II) and Pd(II) metal complexes of this ligand preparedby reaction of chloride salt of Fe (III), Co(II) and Pd(II) with NPPA in dry acetonitrile. Identification andCharacterization of the ligand was performed by FT-IR, 1H-NMR spectroscopy and elemental an...

متن کامل

Complexes and Homotopy Chains

is the boundary chain of the oriented cell &J, the p% being the incidence numbers of the cells a\, a j ~ \ These chains and boundary matrices change by subdivision of the complex A, and the homology groups are the invariants with regard to this process. The chains and boundary matrices which I introduce are defined for complexes U with an adjoined group G of mappings 7 of U in itself, tha t is,...

متن کامل

Homotopy Properties of Thom Complexes

Introduction 2 1. Thom Spaces 3 1.1. G-framed submanifolds. Classes of L-equivalent submanifolds 3 1.2. Thom spaces. The classifying properties of Thom spaces 4 1.3. The cohomologies of Thom spaces modulo p for p > 2 6 1.4. Cohomologies of Thom spaces modulo 2 8 1.5. Diagonal Homomorphisms 11 2. Inner Homology Rings 13 2.1. Modules with One Generator 13 2.2. Modules over the Steenrod Algebra. T...

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

ژورنال

عنوان ژورنال: Monatshefte für Mathematik

سال: 2014

ISSN: 0026-9255,1436-5081

DOI: 10.1007/s00605-014-0716-1