Results 61 to 70 of about 277,784 (216)
Subgroup separability, knot groups, and graph manifolds
, 2000 This paper answers a question of Burns, Karrass and Solitar by giving examples of knot and link groups which are not subgroup-separable. For instance, it is shown that the fundamental group of the square knot complement is not subgroup separable.
Wise, Daniel T. +3 more
core
Stein 4-manifolds with boundary and contact structures [PDF]
, 1998 We discuss several applications of Seiberg-Witten theory in conjunction with an embedding theorem (proved elsewhere) for complex 2-dimensional Stein manifolds with boundary.
Lisca, P. +3 more
core +1 more source
Can Enterprises Invest Efficiently in Smart Cities?
Accounting &Finance, EarlyView.ABSTRACT The rapid expansion of the digital economy has accelerated smart city (SC) development in China. Using a time‐varying difference‐in‐differences approach, we examine the impact of SC policies on corporate investment efficiency. We document that SC construction significantly enhances investment efficiency, with robust results across multiple ...
Jingmiao Li +3 more
wiley +1 more source
Nonlinear Calderón Problem on Stein Manifolds
, 2021 This thesis is devoted to the study of inverse problems for semilinear elliptic equations on Stein manifolds with Kähler metric. After developing some preliminary techniques, we will show that the Dirichlet-Neumann maps for certain semilinear elliptic ...
Ma, Yilin
core
Animal Conservation, EarlyView.In an unfenced mixed‐use savanna landscape in Namibia, we compared realized densities of leopards and cheetahs estimated using spatial capture–recapture models with prey‐based carrying capacity predictions. Leopard densities exceeded predictions based on wild prey alone but closely matched livestock‐supplemented models, suggesting that vulnerable ...
Kathan Bandyopadhyay +7 more
wiley +1 more source
Occupational Physical Activity Is Negatively Associated With Semen Quality
Andrology, EarlyView.ABSTRACT Background Lifestyle factors have been associated with semen quality and have been implicated in the reported global decline in semen parameters. Moderate physical activity has been linked to improved semen quality; however, the association between occupational physical activity and semen quality is limited.
Michal Efrat +5 more
wiley +1 more source
Subgroup separability, knot groups, and graph manifolds
, 2001 This paper answers a question of Burns, Karrass and Solitar by giving examples of knot and link groups which are not subgroup-separable. For instance, it is shown that the fundamental group of the square knot complement is not subgroup separable.
Wise, Daniel T., Niblo, Graham A.
core
Density Property of Stein Manifolds and Holomorphic Matrix Factorization [PDF]
We present results on the density property of Stein manifolds and on factorization of holomorphic matrices. A Stein manifold with the density property has an infinite dimensional group of holomorphic automorphisms.
Huang, Gaofeng
core +1 more source
British Journal of Educational Psychology, EarlyView.Abstract Background This study investigated the development of primary school children's error‐related adjustments in reading and arithmetic, both cross‐sectionally and longitudinally. Aims We aimed to uncover monitoring‐based cognitive control processes and often‐overlooked strategy use in academic tasks requiring a balancing of speed and accuracy ...
Claudia M. Roebers +3 more
wiley +1 more source
Dehn surgeries and negative-definite four-manifolds [PDF]
, 2012 Given a knot <i>K</i> in the three-sphere, we address the question: Which Dehn surgeries on <i>K</i> bound negative-definite four-manifolds?
Strle, Sašo, Owens, Brendan
core +1 more source