Nonsimply connected 4 manifolds



Non-simply connected Calabi-Yau threefolds constructed as quotients of Schoen threefolds
Karayayla, Tolga (2017-07-01)
The aim of this paper is to complete the classification of all Calabi-Yau threefolds which are constructed as the quotient of a smooth Schoen threefold X = B-1 x p1 B-2 (fiber product over P-1 of two relatively minimal rational elliptic surfaces B-1 and B-2 with section) under a finite group action acting freely on the Schoen threefold X. The abelian group actions on smooth Schoen threefolds which induce cyclic group actions on the base curve P-1 were studied by Bouchard and Donagi (2008), and all such acti...
Dosi, Anar (World Scientific Pub Co Pte Lt, 2011-04-01)
In this note we investigate quantizations of the weak topology associated with a pair of dual linear spaces. We prove that the weak topology admits only one quantization called the weak quantum topology, and that weakly matrix bounded sets are precisely the min-bounded sets with respect to any polynormed topology compatible with the given duality. The technique of this paper allows us to obtain an operator space proof of the noncommutative bipolar theorem.
Noncommutative affine spaces and Lie-complete rings
Dosi, Anar (2015-02-01)
In this paper, we investigate the structure sheaves of an (infinite-dimensional) affine NC-space A(nc)(x) affine Lie-space A(lich)(x), and their nilpotent perturbations A(nc,q)(x) and A(lich),(x)(q) respectively. We prove that the schemes A(nc)(x) and A(lich)(x) are identical if and only if x is a finite set of variables, that is, when we deal with finite-dimensional noncommutative affine spaces. For each (Zariski) open subset U subset of X = Spec(C vertical bar x vertical bar), we obtain the precise descri...
Nonautonomous Bifurcations in Bernoulli Differential Equations with Piecewise Constant Argument of Generalized Type
Akhmet, Marat; Kashkynbayev, Ardak (2017-01-01)
Nonlocal operators with local boundary conditions in higher dimensions
Aksoylu, Burak; Celiker, Fatih; Kilicer, Orsan (Springer Science and Business Media LLC, 2019-02-01)
We present novel nonlocal governing operators in 2D/3D for wave propagation and diffusion. The operators are inspired by peridynamics. They agree with the original peridynamics operator in the bulk of the domain and simultaneously enforce local boundary conditions (BC). The main ingredients are periodic, antiperiodic, and mixed extensions of separable kernel functions together with even and odd parts of bivariate functions on rectangular/box domains. The operators are bounded and self-adjoint. We present al...
Citation Formats
M. Pamuk, “Nonsimply connected 4 manifolds,” 2015, Accessed: 00, 2021. [Online]. Available: