| 11. | Its inverse is, which is not differentiable at zero.
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| 12. | The gender assignment of non-sex-differentiable things is complex.
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| 13. | The Ricci flow was only defined for smooth differentiable manifolds.
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| 14. | In particular " f " is actually infinitely differentiable, with
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| 15. | For non-differentiable functions, gradient methods are ill-defined.
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| 16. | The basis function is no longer differentiable at that point.
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| 17. | The applications are to differentiable manifolds, PL manifolds and topological manifolds.
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| 18. | The situation thus described is in marked contrast to complex differentiable functions.
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| 19. | In particular it is possible to use calculus on a differentiable manifold.
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| 20. | Like the tangent bundle the cotangent bundle is again a differentiable manifold.
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