1 M ay 2 00 1 BMT INVARIANTS OF SURFACES AND 4 - MANIFOLDS
نویسنده
چکیده
Introduction. In this paper we present the Braid Monodromy Type (BMT) of curves and surfaces; past, present and future. The BMT is an invariant that can distinguish between non-isotopic curves; between different families of surfaces of general type; between connected components of moduli space of surfaces and between non symplectmorphic 4-manifolds. BMT is a finer invariant than the Sieberg-Witten invariants. Consider X1, X2 surfaces of general type with the same c 2 1, c2 (π1 = 1). It is known that
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تاریخ انتشار 2001