Nontrivial vector bundles with trivial Chern classes

Abstract

Let ${\mathbb{F}}_0$ be an algebraically closed field, with $char({\mathbb{F}}_0)=0$. In this article, for prime numbers $p\ge 2$, we construct smooth affine algebras $B$ over ${\mathbb{F}}_0$, with $\dim B=p+2$. Further, we construct projective $B$-modules $Q$ with $rank(Q)=p$, such that $x=[Q]-[B^p]\ne 0$ in $K_0(B)$ and the total Chern class $C(Q)=1+{\sum }_{i=1}^p{C}^k(Q)=1$ is trivial. We use the splitting theorem in \cite{ABH} that for projective $B$-modules $P$ with $rank(P)=r=\dim B-1$, vanishing $C^r(P)=0⟹P\cong Q\oplus B$.

Proof is incomplete