J - holomorphic curves and their applications

This thesis covers four results: 1. We prove an analog of Whitney's embedding theorem for J-holomorphic discs. 2. For zj = xj + i*yj in C and let D_R^2 = {(z1, z2) in C^2 : x1^2 + x2^2 <1, y1^2 + y2^2 < 1} be the real bi-disc in C^2. We find the sharp lower bound for R such that D_R^2 admits a symplectic embedding into D(R) * C, the complex cylinder with base radius R. The sharp lower bound for R is shown to be 2/sqrt(pi). As a consequence, we know that D_R^2 and D^2 are not symplectomorphic. 3. We extend the second result by showing that if T is an orthogonal matrix on R^4 = C^2, then TD^2 is symplectomorphic to D^2 if and only if T is unitary or conjugate to unitary. 4. A high dimensional case of the second result: for r >= 1 and n >= 2, we show that D_R^2 * D^(n-2)(r) and D^2 * D^(n-2)(r) are not symplectomorphic.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Mathematics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Wong, Yat Sen

Contributors dc:contributor

• Tumanov, Alexander
• Kerman, Ely
• D’Angelo, John
• Tolman, Susan

• J-holomorphic curve
• symplectic embedding
• symplectomorphism

Statement dc:rights

• Copyright 2014 Yat Sen Wong

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/50692

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/50692