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Extra Form
Lecturer 장동훈
Dept. 부산대 수학과
date Mar 28, 2019

A circle action on a manifold can be thought of as a periodic flow on a manifold (periodic dynamical system), or roughly a rotation of a manifold. During this talk, we consider symplectic/Hamiltonian circle actions on compact symplectic manifolds, which have fixed points. First, we discuss the classification of an action from small numbers of fixed points. Second, we discuss the classification of a Hamiltonian action from low dimensions. Third, we discuss when a symplectic action is Hamiltonian.


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  1. Circular maximal functions on the Heisenberg group

  2. 03Apr
    by 김수현
    in Math Colloquia

    Fixed points of symplectic/Hamiltonian circle actions

  3. A modified separation method to solve a heat-transfer boundary value problem

  4. Arithmetic of elliptic curves

  5. <학부생을 위한 ɛ 강연> Convergence of Fourier series and integrals in Lebesgue spaces

  6. Trends to equilibrium in collisional rarefied gas theory

  7. The Lagrange and Markov Spectra of Pythagorean triples

  8. A-infinity functor and topological field theory

  9. Weak and strong well-posedness of critical and supercritical SDEs with singular coefficients

  10. Alice and Bob meet Banach and von Neumann

  11. Congruences between modular forms

  12. W-algebras and related topics

  13. On function field and smooth specialization of a hypersurface in the projective space

  14. <학부생을 위한 ɛ 강연> 기하와 대수의 거울대칭

  15. 1 is big enough to understand 3

  16. Mathemaics & Hedge Fund

  17. Unique ergodicity for foliations

  18. Conformal field theory in mathematics

  19. <학부생을 위한 ɛ 강연> A mathematical approach to xEV battery system

  20. Anomalous diffusions and fractional order differential equations

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