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For minimal unique ergodic diffeomorphisms $\alpha_n$ of $S^{2n+1} (n>0)$ and$\alpha_m$ of $S^{2m+1}(m>0)$, the $C^*$-crossed product algebra$C(S^{2n+1})\rtimes_{\alpha_n} \mathbb{Z}$ is isomorphic to$C(S^{2m+1})\rtimes_{\alpha_m} \mathbb{Z}$ even though $n\neq m$ . However, bycyclic cohomology, we show that smooth crossed product algebra$C^\infty(S^{2n+1})\rtimes_{\alpha_n} \mathbb{Z}$ is not isomorphic to$C^\infty(S^{2m+1})\rtimes_{\alpha_m} \mathbb{Z}$ if $n\neq m$.

Smooth crossed products induced by minimal unique ergodic diffeomorphisms on odd spheres