共查询到20条相似文献,搜索用时 46 毫秒
1.
We study some combinatorial principles intermediate between square and weak square. We construct models which distinguish
various square principles, and show that a strengthened form of weak square holds in the Prikry model. Jensen proved that
a large cardinal property slightly stronger than 1-extendibility is incompatible with square; we prove this is close to optimal
by showing that 1-extendibility is compatible with square.
First author partially supported by NSF grants DMS-9703945 and DMS-0070549.
Second author partially supported by NSF Grants DMS-9305990, DMS-9712580, DMS-9996280 and DMS-0088948. 相似文献
2.
We study concentration inequalities for Lipschitz functions on graphs by estimating the optimal constant in exponential moments
of subgaussian type. This is illustrated on various graphs and related to various graph constants. We also settle, in the
affirmative, a question of Talagrand on a deviation inequality for the discrete cube.
Research supported in part by NSF Grant No. DMS-0405587 and by EPSRC Visiting Fellowship.
Research supported in part by NSF Grant No. DMS-9803239, DMS-0100289.
Research supported in part by NSF Grant No. DMS-0401239. 相似文献
3.
Markov transition kernels are perturbed by output kernels with a special emphasis on building mortality into structured population
models. A Feynman-Kac formula is derived which illustrates the interplay of mortality with a Markov process associated with
the unperturbed kernel.
partially supported by NSF grants DMS-0314529 and SES-0345945
partially supported by NSF grants DMS-9706787 and DMS-0314529 相似文献
4.
Some Morera and mean-value type theorems are proved in the hyperbolic disk.
Partially supported by NSF grants DMS-9000619 and CDR-8803012.
Partially supported by NSF grants DMS-8703072 and DMS-9000619, and DGI-CYT grant PB 89-0311. 相似文献
5.
We give a new polynomial bound on the complexity of approximating the maximal inscribed ellipsoid for a polytope.Research supported by NSF Grant DMS-8706133.Research supported by NSF Grant DMS-8904406. 相似文献
6.
Mark Agranovsky Carlos Berenstein Der-Chen Chang Daniel Pascuas 《Journal d'Analyse Mathématique》1991,57(1):282-296
We obtain a Morera type characterization for the square integrable CR functions on the Heisenberg group.
Partially supported by NSF Grant DMS-90524569. $Partially supported by NSF Grant DMS-9000968. 相似文献
7.
We give some estimates for how well the normalized trace functional exposes the identity map on a finite-dimensional space.
Research supported by NSF Grant DMS-8320632.
Research supported by NSF Grant DMS-8400960. 相似文献
8.
We prove a non-negative-stellensatz and a null-stellensatz for a class of polynomials called hereditary polynomials in a free *-algebra.Partially supported by NSF, DARPA and Ford Motor Co.Partially supported by NSF grant DMS-0140112Partially supported by NSF grant DMS-0100367 相似文献
9.
Akihiko Yukie 《Mathematische Annalen》1992,292(1):355-374
Partially supported by NSF Grant DMS-8803085, DMS-8610730 相似文献
10.
Hermann Render 《Mathematische Annalen》1995,303(1):307-324
Partially supported by NSF grants DMS-9208071 and DMS-9100383 相似文献
11.
Fedor A. Bogomolov Paolo Cascini Bruno de Oliveira 《Central European Journal of Mathematics》2006,4(2):194-208
We prove that any finite set of n-dimensional isolated algebraic singularities can be afforded on a simply connected projective
variety.
The first author was partially supported by NSF grant DMS-01591 and the third author was partially supported by NSF grant
DMS-03693 相似文献
12.
Karl Petersen 《Journal d'Analyse Mathématique》1988,51(1):228-244
Research supported in part by NSF Grants DMS-8400730 and DMS-8620132. 相似文献
13.
The second author was supported by NSF grants DMS-8905538 and DMS-9096119 相似文献
14.
Research supported by NSF grants DMS-88-16321 and DMS-87-02871. 相似文献
15.
We address partition problems of Erd?s and Hajnal by showing that for all , if and carries a -dense ideal. If is measurable we show that for where is a very large ordinal less than that is closed under all primitive recursive ordinal operations.
Received: 27 June 2001 / Revised version: 5 December 2001 / Published online: 4 February 2003
The first author was partially supported by NSF grant DMS-0101155 and the Equipe d'Analyse Univ. of Paris 6. The second author
was partially supported by NSF grants DMS-0072560 and DMS-9704477. 相似文献
16.
Research partially supported by NSF Grants DMS-861018 and DMS-8902797 相似文献
17.
Sérgio R. Fenley 《Commentarii Mathematici Helvetici》1995,70(1):248-266
We study topologically transitive Anosov flows in 3-manifolds. We show that if one of the stable or unstable foliations in
the universal cover does not have Hausdorff leaf space (branching occurs) then both have branching in the positive and negative
directions.
Research partially supported by NSF grants DMS-9201744 and DMS-9306059. 相似文献
18.
J. A. Ball I. Gohberg L. Rodman T. Shalom 《Integral Equations and Operator Theory》1990,13(4):488-497
We give necessary and sufficient conditions for a set of numbers to be the eigenvalues of a completion of a matrix prescribed in its upper triangular part.Partially supported by the NSF Grant DMS-8701615-02Partially supported by the NSF Grant DMS-8802836 and United States-Israel Binational Science Foundation Grant 88-00304/I. 相似文献
19.
We prove that for any affine variety S defined overQ there exist Shephard and Artin groups G such that a Zariski open subset U of S is biregular isomorphic to a Zariski open
subset of the character variety X(G, PO(3)) = Hom(G, PO(3))//PO(3). The subset U contains all real points of S. As an application
we construct new examples of finitely-presented groups which are not fundamental groups of smooth complex algebraic varieties.
This research was partially supported by NSF grant DMS-96-26633 at University of Utah.
This research was partially supported by NSF grant DMS-95-04193 at University of Maryland. 相似文献
20.
Research partially supported by NSF grant no. DMS-87-04209 and DMS-90-04062 相似文献