Suppose we have a Legendrian knot embedded on a page of an open book compatible with the given contact structure on the 3-manifold. Is it true that the page framing and Thurston-Bennequin framing of the knot are equal?
1 Answer
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Yes, it is true, since the tangent distribution to the pages and the contact planes can be made arbitrarily close, therefore they're isotopic along $L$.