Stable Homotopy Around the Arf-Kervaire Invariant

This book describes key techniques of stable homotopy theory, classical and new, and applies them to the unsolved problem of the existence of framed manifolds with odd Arf-Kervaire invariant. It introduces a new technique called "upper triangular technology."

Were I to take an iron gun, And ?re it o? towards the sun; I grant 'twould reach its mark at last, But not till many years had passed. But should that bullet change its force, And to the planets take its course, 'Twould never reach the nearest star, Because it is so very far. from FACTS by Lewis Carroll [55] Let me begin by describing the two purposes which prompted me to write this monograph. This is a book about algebraic topology and more especially about homotopy theory. Since the inception of algebraic topology [217] the study of homotopy classes of continuous maps between spheres has enjoyed a very exc- n n tional, central role. As is well known, for homotopy classes of maps f : S ?? S with n? 1 the sole homotopy invariant is the degree, which characterises the homotopy class completely. The search for a continuous map between spheres of di?erent dimensions and not homotopic to the constant map had to wait for its resolution until the remarkable paper of Heinz Hopf [111]. In retrospect, ?nding 3 an example was rather easy because there is a canonical quotient map from S to 3 1 1 2 theorbitspaceofthe freecircleactionS /S =CP = S .

Introduction of the new upper triangular technology method Detailed application of upper triangular technology to operations in algebraic K-theory and to the Arf-Kervaire invariant problem. An account of the relation of the book's classical stable homotopy theory results to the important, new motivic stable homotopy theory of Morel-Voevodsky Includes supplementary material: sn.pub/extras

Texte du rabat

Were I to take an iron gun, And ?re it o? towards the sun; I grant twould reach its mark at last, But not till many years had passed. But should that bullet change its force, And to the planets take its course, Twould never reach the nearest star, Because it is so very far. from FACTS by Lewis Carroll [55] Let me begin by describing the two purposes which prompted me to write this monograph. This is a book about algebraic topology and more especially about homotopy theory. Since the inception of algebraic topology [217] the study of homotopy classes of continuous maps between spheres has enjoyed a very exc- n n tional, central role. As is well known, for homotopy classes of maps f : S ?? S with n? 1 the sole homotopy invariant is the degree, which characterises the homotopy class completely. The search for a continuous map between spheres of di?erent dimensions and not homotopic to the constant map had to wait for its resolution until the remarkable paper of Heinz Hopf [111]. In retrospect, ?nding 3 an example was rather easy because there is a canonical quotient map from S to 3 1 1 2 theorbitspaceofthe freecircleactionS /S =CP = S .

Contenu
Algebraic Topology Background.- The Arf-Kervaire Invariant via QX.- The Upper Triangular Technology.- A Brief Glimpse of Algebraic K-theory.- The Matrix Corresponding to 1 ? ?3.- Real Projective Space.- Hurewicz Images, BP-theory and the Arf-Kervaire Invariant.- Upper Triangular Technology and the Arf-Kervaire Invariant.- Futuristic and Contemporary Stable Homotopy.