Symplectic sum
= Symplectic sum
{wiki}
A symplectic sum removes tubular neighborhoods of symplectic submanifolds whose normal bundles have opposite <Euler classes> and glues their boundaries by a fiber-reversing identification.
= Symplectic sum
{wiki}
A symplectic sum removes tubular neighborhoods of symplectic submanifolds whose normal bundles have opposite <Euler classes> and glues their boundaries by a fiber-reversing identification.