Let $M$ be a smooth manifold. I want to know what is the meaning of ''fibers of $M$ is over $\Bbb S^1$''? and manifolds with this property why are important? What is its relation to differential structure on $M$?
Thanks.
Let $M$ be a smooth manifold. I want to know what is the meaning of ''fibers of $M$ is over $\Bbb S^1$''? and manifolds with this property why are important? What is its relation to differential structure on $M$?
Thanks.
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