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math.SG2000
Uniqueness of symplectic canonical class, surface cone and symplectic cone of 4-manifolds with b^+=1
Tian-Jun Li, Ai-Ko Liu
Let M be a closed oriented smooth 4-manifold admitting symplectic structures. If M is minimal and has b^+=1, we prove that there is a unique symplectic canonical class up to sign,…
math.QA2000
An example concerning Ohtsuki's invariant and the full SO(3) quautum invariant
Bang-He Li, Tian-Jun Li
Two lens spaces are given to show that Ohtsuki's for rational homology spheres does not determine Kirby-Melvin's