Operator K-theory and Topological K-theory












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I was trying to understand the relationship between these two K-theory's when you pick your C* algebra to be $C(X)$ for $X$ a compact Hausdorff space. For this you create a function between $P_infty (C(X))$ and the Vector bundles on $X$ by $p$ goes to $xi_p=(E_p,pi,X)$ where $E_p ={(x,v) in Xtimes mathbb{C}^n: vin p(x)(mathbb{C}^n)}$ and $pi$ is the natural projection. I wonder why this is well defined in the equivalence classes of $P_infty (C(X))$. i.e why $psim q$ $iff$ there exists an isomorphism of vector bundles between $xi_p$ and $xi_q$.










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    2












    $begingroup$


    I was trying to understand the relationship between these two K-theory's when you pick your C* algebra to be $C(X)$ for $X$ a compact Hausdorff space. For this you create a function between $P_infty (C(X))$ and the Vector bundles on $X$ by $p$ goes to $xi_p=(E_p,pi,X)$ where $E_p ={(x,v) in Xtimes mathbb{C}^n: vin p(x)(mathbb{C}^n)}$ and $pi$ is the natural projection. I wonder why this is well defined in the equivalence classes of $P_infty (C(X))$. i.e why $psim q$ $iff$ there exists an isomorphism of vector bundles between $xi_p$ and $xi_q$.










    share|cite|improve this question











    $endgroup$















      2












      2








      2





      $begingroup$


      I was trying to understand the relationship between these two K-theory's when you pick your C* algebra to be $C(X)$ for $X$ a compact Hausdorff space. For this you create a function between $P_infty (C(X))$ and the Vector bundles on $X$ by $p$ goes to $xi_p=(E_p,pi,X)$ where $E_p ={(x,v) in Xtimes mathbb{C}^n: vin p(x)(mathbb{C}^n)}$ and $pi$ is the natural projection. I wonder why this is well defined in the equivalence classes of $P_infty (C(X))$. i.e why $psim q$ $iff$ there exists an isomorphism of vector bundles between $xi_p$ and $xi_q$.










      share|cite|improve this question











      $endgroup$




      I was trying to understand the relationship between these two K-theory's when you pick your C* algebra to be $C(X)$ for $X$ a compact Hausdorff space. For this you create a function between $P_infty (C(X))$ and the Vector bundles on $X$ by $p$ goes to $xi_p=(E_p,pi,X)$ where $E_p ={(x,v) in Xtimes mathbb{C}^n: vin p(x)(mathbb{C}^n)}$ and $pi$ is the natural projection. I wonder why this is well defined in the equivalence classes of $P_infty (C(X))$. i.e why $psim q$ $iff$ there exists an isomorphism of vector bundles between $xi_p$ and $xi_q$.







      operator-theory operator-algebras vector-bundles k-theory topological-k-theory






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      edited Jan 26 at 11:12







      sirjoe

















      asked Jan 25 at 16:29









      sirjoesirjoe

      726




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