1,066 research outputs found
Martin R. Noris. Gateway to Asia : Sinkiang
No full textLévy Roger. Martin R. Noris. Gateway to Asia : Sinkiang. In: Politique étrangère, n°3 - 1945 - 10ᵉannée. pp. 285-287
Martin R. Noris. Gateway to Asia : Sinkiang
No full textLévy Roger. Martin R. Noris. Gateway to Asia : Sinkiang. In: Politique étrangère, n°3 - 1945 - 10ᵉannée. pp. 285-287
Taming boundary condition changing operator anomalies with the tachyon vacuum
No full textMotivated by the appearance of associativity anomalies in the context of superstring field theory, we give a generalized solution built from boundary condition changing operators which can be associated to a generic tachyon vacuum in the KBc subalgebra of the Okawa form. We articulate sufficient conditions on the choice of tachyon vacuum to ensure that ambiguous products do not appear in the equations of motion
Opera Varia
No full textAb Eminentissimo D. F. Henrico De Noris Augustiniano Veronensi Tit. S. Augustini S. R. E. Presbytero Cardinali, & Sanctæ Sedis Apostolicæ Bibliothecario, vel proprio, vel alieno nomine edita. Quibus Doctrina In Historia Pelagiana, Dissertatione De Synodo V. & Vindiciis Augustianis Contenta, illustratur, roboratur, & defenditur. Quorum seriem sequens pagina exhibebitVorlageform des Erscheinungsvermerks: LUGDUNI, Apud ANISSONIOS, & JOANN: POSUEL. M. DCCVII
Positive constrained minimizers for supercritical problems in the ball
No full textWe provide a sufficient condition for the existence of a positive solution to -Delta u + V(vertical bar x vertical bar)u = u(p) in B-1, when p is large enough. Here B-1 is the unit ball of R-n, n >= 2, and we deal with both Neumann and Dirichlet homogeneous boundary conditions. The solution turns out to be a constrained minimum of the associated energy functional. As an application we show that in case V(vertical bar x vertical bar) >= 0, V not equivalent to 0 is smooth and p is sufficiently large, and the Neumann problem always admits a solution
Asymptotics for a high-energy solution of a supercritical problem
No full textIn this paper we deal with the equation
for , under Neumann boundary conditions in the unit ball of
. We focus on the three positive, radial, and radially
non-decreasing solutions, whose existence for large is proved in [13]. We
detect the limit profile as of the higher energy solution and show
that, unlike the minimal energy one, it converges to the constant . The
proof requires several tools borrowed from the theory of minimization problems
and accurate a priori estimates of the solutions, which are of independent
interest.Comment: 14 pages, revised versio
Eigenvalues of the Laplacian with moving mixed boundary conditions: the case of disappearing Dirichlet region
No full textIn this work we consider the homogeneous Neumann eigenvalue problem for the Laplacian on a bounded Lipschitz domain and a singular perturbation of it, which consists in prescribing zero Dirichlet boundary conditions on a small subset of the boundary. We first describe the sharp asymptotic behaviour of a perturbed eigenvalue, in the case in which it is converging to a simple eigenvalue of the limit Neumann problem. The first term in the asymptotic expansion turns out to depend on the Sobolev capacity of the subset where the perturbed eigenfunction is vanishing. Then we focus on the case of Dirichlet boundary conditions imposed on a subset which is scaling to a point; by a blow-up analysis for the capacitary potentials, we detect the vanishing order of the Sobolev capacity of such shrinking Dirichlet boundary portion
) Superspace
No full textWe develop a three-dimensional N=4 theory of rigid supersymmetry describing the dynamics of a set of hypermultiplets (?I alpha alpha 'alpha?',phi I alpha A) on a curved AdS(3) worldvolume background, whose supersymmetry is captured by the supergroup D2(2,1;alpha). To unveil some remarkable features of this model, we perform two twists, involving the SL(2,R) factors of the theory. After the first twist, our spacetime Lagrangian exhibits a Chern-Simons term associated with an odd one-form field, together with a fermionic "gauge-fixing", in the spirit of the Rozansky-Witten model. The second twist allows to interpret the D2(2,1;alpha) setup as a framework capable of describing massive Dirac particles. In particular, this yields a generalisation of the Alvarez-Valenzuela-Zanelli model of "unconventional supersymmetry". We comment on specific values of the combination alpha+1, which in our model is related to a sort of gauging in the absence of dynamical gauge fields
Gauged D = 4 N = 4 supergravity
No full textAbstract We present the full Lagrangian and supersymmetry transformation rules for the gauged D = 4, N = 4 (half-maximal) supergravity coupled to an arbitrary number of vector multiplets. Using the embedding tensor formulation, the final results are universal and valid in arbitrary symplectic frames. We also analyze the conditions for the critical points of the scalar potential and specify the full spectrum of the quadratic fluctuations about Minkowski vacua. This allows us also to exclude the appearance of quadratic divergences in the 1-loop corrections to the scalar potential for any Minkowski vacuum fully breaking supersymmetry. We also provide some interesting byproducts of our analysis, like the field equations and the quadratic constraints for the fermion shifts characterizing the gauging (also known as T-tensor identities)
Ceratolejeunea laetefusca R. M. Schust.
No full textCeratolejeunea laetefusca (Aust.) R.M.Schust. C. integrifolia A.Evans, Bulletin of the Torrey Botanical Club 38: 213 (1911). SPECIMENS EXAMINED. — Panama. Barro Colorado Island, Shattuck 4, 568 p. p. (Stotler et al. 1998); Fairchild trail 4, Dauphin 3134; Nemesia trail, Dauphin 3103; Snyder-Molino trail, Dauphin 3052; Shannon trail 0-2, Dauphin 3075. HABITAT. — On tree trunks in relatively dry, exposed sites. DISTRIBUTION. — Tropical America.Published as part of Dauphin, Gregorio, Gradstein, S. Robbert & Allen, Noris Salazar, 2022, Liverworts and hornworts of Barro Colorado Island, Panama, pp. 153-165 in Cryptogamie, Bryologie 20 (9) on page 156, DOI: 10.5252/cryptogamie-bryologie2022v43a9, http://zenodo.org/record/782257
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