**Special Seminar**

Come join usĀ **Friday January 26, 2018 at 12 pm in RM 507, Professor Laura Starkston (Stanford) will be giving a special lecture about “The Symplectic Isotopy Problem & Lagrangian Skeleta”.**

**Abstract**

Symplectic manifolds decompose into a symplectic divisor and an

exact Weinstein manifold. We will discuss both sides of this essential

decomposition.

On the divisor side, we will focus on symplectic surfaces in 4-manifolds,

particularly the longstanding symplectic isotopy problem. We will leverage

singularities and study symplectic versions of line arrangements and

rational cuspidal curves. On the Weinstein side, we will see how to encode

the symplectic geometry of a 2n-dimensional manifold using the topology of

an n-dimensional singular complex: the Lagrangian skeleton.

**Mathematics Hall, Room 507**

**Friday January 26, 2018 at 12 pm**

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