The Craighero–Gattazzo surface is simply connected
نویسندگان
چکیده
منابع مشابه
A Simply Connected Surface of General Type
In this paper we construct a simply connected, minimal, complex surface of general type with pg = 0 and K 2 = 2 using a Q-Gorenstein smoothing theory and a rational blow-down surgery.
متن کاملA SIMPLY CONNECTED SURFACE OF GENERAL TYPE with . . .
Motivated by a recent result of Y. Lee and the second author [7], we construct a simply connected, minimal, complex surface of general type with pg = 0 and K 2 = 3 using a rational blow-down surgery and a Q-Gorenstein smoothing theory.
متن کاملOn digital simply connected spaces and manifolds: a digital simply connected 3-manifold is the digital 3-sphere
In the framework of digital topology, we study structural and topological properties of digital ndimensional manifolds. We introduce the notion of simple connectedness of a digital space and prove that if M and N are homotopy equivalent digital spaces and M is simply connected, then so is N. We show that a simply connected digital 2-manifold is the digital 2-sphere and a simply connected digita...
متن کاملSome results of semilocally simply connected property
If we consider some special conditions, we can assume fundamental group of a topological space as a new topological space. In this paper, we will present a number of theorems in topological fundamental group related to semilocally simply connected property for a topological space.
متن کاملOn Simply-connected 4-manifolds
This paper concerns (but does not succeed in performing) the diffeomorphism classification of closed, oriented, differential, simply-connected 4-manifolds. It arises out of the observation (due to Pontrjagin and Milnor [2]) that if two such manifolds Mx and M2 have isomorphic quadratic forms of intersection numbers on #2(Jft-), then there is a map / : M1-^-Mi which is a homotopy equivalence and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Compositio Mathematica
سال: 2017
ISSN: 0010-437X,1570-5846
DOI: 10.1112/s0010437x16008125