# Problem 122

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Fibration Theorem for $\log |\lambda|$? If $M = \cup _\alpha N_\alpha, N_\alpha$ submanifolds, with $f(N_\alpha ) = N_\alpha$, is the spectral radius of $f_\ast$ on $M$ $\le$ the sup of the spectral radius of $f_\ast$ on $N_\alpha$'s?

If $f|N_\alpha$ is an isometry, does the spectral radius of $f_\ast$ on $M$ $= 1$? Are all distal diffeos built up this way, i.e. by extensions where homology works?

Note: There is another Problem 122 that was crossed out.

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