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111.
《Mathematische Nachrichten》2017,290(5-6):785-793
We investigate the relationship among several numerical invariants associated to a (free) projective hypersurface V : the sequence of mixed multiplicities of its Jacobian ideal, the Hilbert polynomial of its Milnor algebra, and the sequence of exponents when V is free. As a byproduct, we obtain explicit equations for some of the homaloidal surfaces in the projective 3‐dimensional space constructed by C. Ciliberto, F. Russo and A. Simis. 相似文献
112.
Yisheng Huang 《Southeast Asian Bulletin of Mathematics》2003,26(4):575-582
Prove that the notion of positive implicative BCI-algebras coincides with that of weakly positive implicative BCI-algebras, thus the whole results in the latter are still true in the former, in particular, one of these results answers definitely the first half of J. Meng and X.L. Xin’s open problem: Does the class of positive implicative BCI-algebras form a variety? The second half of the same problem is: What properties will the ideals of such an algebra have? Here, some further properties are obtained. 相似文献
113.
范洪福 《应用泛函分析学报》2006,8(4):304-307
讨论向量值函数的Banach代数L∞(T;X)的极大理想空间的拓扑性质和代数性质,得到了若干结果;给出了Banach空间H∞(D;X)中闭单位球的端点的一条性质. 相似文献
114.
Wertheim’s integral equation theory for associating fluids is reformulated for the study of the connectedness properties of
associating hard spheres with four bonding sites. The association interaction is described as a square-well saturable attraction
between these sites. The connectedness version of the Ornstein-Zernike (OZ) integral equation is supplemented by the PY-like
closure relation and solved analytically within an ideal network approximation in which the network is represented as resulting
from the crossing of ideal polymer chains. The pair connectedness functions and the mean cluster size are calculated and discussed.
The condition for the percolation transition and the analytical form of the percolation threshold are derived. The connection
of the percolation with the gas-liquid phase transition is discussed. 相似文献
115.
Tonghai Yang 《Proceedings of the American Mathematical Society》1998,126(4):999-1004
In this note, we apply the method of Rodriguez Villegas and Yang (1996) to construct a family of infinite many theta series over the Hilbert-Blumenthal modular surfaces with a common zero. We also relate the non-vanishing of the central L-values of certain Hecke characters of non-biquadratic CM number fields of degree 4 to the nonvanishing of theta functions at CM points in the Hilbert-Blumenthal modular surfaces.
116.
Pedro Jiménez Guerra Miguel Angel Melguizo María J. Mu?oz-Bouzo 《Set-Valued Analysis》2007,15(1):47-59
The paper deals with the properties of a conic set-valued function defined on the set of all ideal points of vector programming
problems. The results here about the continuity and derivability of this conic set-valued map, can be used to get information
about the sensitivity of the problem and the stability of the order associated to every ideal point. Furthermore, it is proved
that certain contingent cones are determined by the ideal conic set-valued map.
相似文献
117.
Jingbo Xia 《Journal of Functional Analysis》2005,228(2):369-393
A norm ideal C is said to satisfy condition (QK) if there exist constants 0<t<1 and 0<B<∞, such that ∥X[k]∥C?Bkt∥X∥C for every finite-rank operator X and every k∈N, where X[k] denotes the direct sum of k copies of X. Let μ be a regular Borel measure whose support is contained in a unit cube Q in Rn and let Kj be the singular integral operator on L2(Rn,μ) with the kernel function (xj-yj)/|x-y|2, 1?j?n. Let {Qw:w∈W} be the usual dyadic decomposition of Q, i.e., {Qw:|w|=?} is the dyadic partition of Q by cubes of the size 2-?×?×2-?. We show that if C satisfies (QK) and if ∥∑w∈W2|w|μ(Qw)ξw⊗ξw∥C′<∞, where C′ is the dual of C(0) and {ξw:w∈W} is any orthonormal set, then K1,…,Kn∈C′. This is a very general obstruction result for the problem of simultaneous diagonalization of commuting tuples of self-adjoint operators modulo C. 相似文献
118.
Pierre Matet 《Mathematical Logic Quarterly》2003,49(6):615-628
Given a regular infinite cardinal κ and a cardinal λ > κ, we study fine ideals H on Pκ(λ) that satisfy the square brackets partition relation , where μ is a cardinal ≥2. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
119.
120.
设Q为有理数域,令φ为由奇素数p生成的有理数域Q的p-adic赋值,R为与其相对应的赋值环,(p)为R的极大理想(素理想).本文用扩张平移的方法讨论了lm)(μ∈R)中的分解问题,并完全解决了该问题.素理想(p)在Q的lm次根扩张Q(μ1 相似文献