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REPORTS ON MATHEMATICAL LOGIC
"... A b s t r a c t. In this paper, the structure of nitely generated free objects in the variety of threevalued closure Lukasiewicz algebras is determined. We describe their indecomposable factors and we give their cardinality..1 Introduction and Preliminaries A Lukasiewicz algebra of order n, or an n ..."
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A b s t r a c t. In this paper, the structure of nitely generated free objects in the variety of threevalued closure Lukasiewicz algebras is determined. We describe their indecomposable factors and we give their cardinality..1 Introduction and Preliminaries A Lukasiewicz algebra of order n
A Sharp Nonlinear Gagliardo–NirenbergType Estimate and Applications to the Regularity of Elliptic Systems
"... We prove the inequality us+2 dx ≤ Cn su2BMO us−22u2 dx s ≥ 2 and to give a sample of possible applications, we show how it can be used to obtain regularity results for the solutions of a wide class of nonlinear degenerate elliptic systems −div (up−2u) = Gx u u where G grows as up. ..."
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We prove the inequality us+2 dx ≤ Cn su2BMO us−22u2 dx s ≥ 2 and to give a sample of possible applications, we show how it can be used to obtain regularity results for the solutions of a wide class of nonlinear degenerate elliptic systems −div (up−2u) = Gx u u where G grows as up.
Universität Oldenburg, D26111 OldenburgClimate Policy with Technology Transfers and Permit Trading
, 2011
"... In this paper, we analyze technology transfers (TT) and tradable emission rights, which are core issues of the ongoing climate negotiations. Subsidizing TT leads to the adoption of better abatement technologies in developing countries, thereby reducing the international permit price. This is benefic ..."
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In this paper, we analyze technology transfers (TT) and tradable emission rights, which are core issues of the ongoing climate negotiations. Subsidizing TT leads to the adoption of better abatement technologies in developing countries, thereby reducing the international permit price
Whom You Know Matters: Venture Capital Networks and Investment Performance,
 Journal of Finance
, 2007
"... Abstract Many financial markets are characterized by strong relationships and networks, rather than arm'slength, spotmarket transactions. We examine the performance consequences of this organizational choice in the context of relationships established when VCs syndicate portfolio company inv ..."
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Cited by 138 (8 self)
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investment opportunities drives up valuations. If so, it seems plausible that competition for deal flow also affects the quality of VCs' investments and thus their performance. We therefore include in our fundlevel 19 All our results are robust to excluding VC firms that never syndicate. 16
unknown title
, 2010
"... Temperature sensitivity of soil organic matter decomposition in boreal soils ..."
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Temperature sensitivity of soil organic matter decomposition in boreal soils
doi:10.1112/jlms/jdm031 CELLULARIZATION OF CLASSIFYING SPACES AND FUSION PROPERTIES OF FINITE GROUPS
"... One way to understand the mod p homotopy theory of classifying spaces of finite groups is to compute their BZ/pcellularization. In the easiest cases this is a classifying space of a finite group (always a finite pgroup). If not, we show that it has infinitely many nontrivial homotopy groups. More ..."
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One way to understand the mod p homotopy theory of classifying spaces of finite groups is to compute their BZ/pcellularization. In the easiest cases this is a classifying space of a finite group (always a finite pgroup). If not, we show that it has infinitely many nontrivial homotopy groups. Moreover they are either ptorsion free or else infinitely many of them contain ptorsion. By means of techniques related to fusion systems we exhibit concrete examples where ptorsion appears and compute explicitly the cellularization.
Recent Climate Observations Compared to Projections." Science 316
, 2007
"... Observations of the climate system are crucial to establish actual climatic trends, while climate models are used to project how quantities like global mean air temperature and sea level may be expected to respond to anthropogenic perturbations of the Earth's radiation budget. Here we compile ..."
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Cited by 112 (4 self)
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. A third candidate is an underestimation of the climate sensitivity to CO 2 (i.e., model error). Note that the dashed scenarios shown are for a medium climate sensitivity of 3 ºC for a doubling of CO 2 concentration, while the grey band surrounding the scenarios shows the effect of uncertainty
AGR 05
"... Responses of soil biological processes to elevated atmospheric [CO2] and nitrogen addition in a poplar plantation ..."
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Responses of soil biological processes to elevated atmospheric [CO2] and nitrogen addition in a poplar plantation
Abstract Cosmological Black Holes as Models of Cosmological Inhomogeneities
, 2006
"... Since cosmological black holes modify the density and pressure of the surrounding universe, and introduce heat conduction, they produce simple models of cosmological inhomogeneities that can be used to study the eect of inhomogeneities on the universe's expansion. In this thesis, new cosmologi ..."
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Since cosmological black holes modify the density and pressure of the surrounding universe, and introduce heat conduction, they produce simple models of cosmological inhomogeneities that can be used to study the eect of inhomogeneities on the universe's expansion. In this thesis, new cosmological black hole solutions are obtained by generalizing the expanding KerrSchild cosmological black holes to obtain the charged case, by performing a KerrSchild transformation of the Einsteinde Sitter universe (instead of a closed universe) to obtain nonexpanding KerrSchild cosmological black holes in asymptotically
at universes, and by performing a conformal transformation on isotropic black hole spacetimes to obtain isotropic cosmological black hole spacetimes. The latter approach is found to produce cosmological black holes with energymomentum tensors that are physical throughout spacetime, unlike previous solutions for cosmological black holes, which violate the energy conditions in some region of spacetime. In addition, it is demonstrated that radiationdominated and matterdominated Einsteinde Sitter universes can be directly matched across a hypersurface of constant time, and this is used to generate the rst solutions for primordial black holes that evolve from being in radiationdominated background universes to matterdominated background universes. Finally, the Weyl curvature, volume expansion, velocity eld, shear, and acceleration are calculated for the cosii mological black holes. Since the nonisotropic black holes introduce shear, according to Raychaudhuri's equation they will tend to decrease the volume expansion of the universe. Unlike several studies that have suggested the relativistic backreaction of inhomogeneities would lead to an accelerating expansion of the universe, it is concluded that shear should be the most likely in
uence of inhomogeneities, so they should most likely decrease the universe's expansion. iii
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