2026-09-20T04:32:31Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1073272026-06-17T14:46:22Zcom_1721.1_7582com_1721.1_7581col_1721.1_131022
Paul Seidel.
Blaier, Netanel S
Massachusetts Institute of Technology. Department of Mathematics.
Massachusetts Institute of Technology. Department of Mathematics
2017-03-10T15:05:31Z
2017-03-10T15:05:31Z
2016
2016
http://hdl.handle.net/1721.1/107327
972901791
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mathematics, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 345-354).
introduce a subset K2,A of the symplectic mapping class group, and an invariant ... that associates a characteristic class in Hochschild cohomology to every symplectomorphism ... K2,A. These are analogues to the familiar Johnson kernel X9 and second Johnson homomorphism - 2 from low-dimensional topology. The method is quite general, and unlike many abstract tools, explicitly computable in certain nice cases. As an application, we prove the existence of symplectomorphism ... of infinite order in symplectic mapping class group ... where Y is the blow-up of P3 at a genus 4 curve. The classical connection between such Fano varieties and cubic 3-folds allows us to factor ... as a product of six-dimensional generalized Dehn twists.
by Netanel S. Blaier.
Ph.D.
354 pages
eng
Massachusetts Institute of Technology
MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.
http://dspace.mit.edu/handle/1721.1/7582
Mathematics.
The quantum Johnson homomorphism and symplectomorphism of 3-folds
Thesis
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