共查询到20条相似文献,搜索用时 93 毫秒
1.
FUBINITHEOREMw.r.t.STOCHASTICMEASUREONPRODUCTMEASURABLESPACECHENPEIDE(陈培德)(InstituteofAppliedMathematics,theChineseAcademyofS... 相似文献
2.
In this paper pointwise bounds for the solutionsu (x, t) of some reaction-diffusion problems are derived. They are of the form
wherez (t) is the solution of the associated kinetic equation and (x, t) is the solution of a pure diffusion problem.
Zusammenfassung In der vorliegenden Arbeit werden punktweise Schranken für die Lösungenu (x, t) gewisser Reaktions-Diffusions-Probleme hergeleitet. Sie haben die Form wobeiz (t) die Lösung der zugehörigen kinetischen Gleichung und (x, t) die Lösung eines reinen Diffusionsproblems ist.相似文献
3.
S. S. Podkorytov 《Journal of Mathematical Sciences》2003,113(6):868-878
Let
. Assume that V is a manifold,
is the set of germs of n-dimensional oriented submanifolds of V, and
is the 2-module of all 2-valued functions on E
n
(V). If
is an oriented submanifold, let
be the indicator function of the set of germs of X. It is proved that there exists a quadratic map
such that for any compact oriented submanifold
one has the relation
, where
is the (rational) semicharacteristic of
, i.e., the residue class defined by the formula
Bibliography: 7 titles. 相似文献
4.
Gerald Kuba 《Acta Mathematica Hungarica》2002,95(1-2):115-124
For a positive real parameter t, real numbers , , and
, we consider sums
, where
is the rounding error function, i.e.\
. Generalizing and improving the main result of Part I of the paper we show that there exists an absolute constant
such that
for all
, and all
. Further, we give applications concerning the circle problem with linear, polynomial, and general weight. 相似文献
5.
Let
be a C*-algebra and X a Hilbert C*
-module. If
is a projection, let
be the p-sphere of X. For φ a state of
with support p in
and
consider the modular vector state φx of
given by
The spheres
provide fibrations
and
These fibrations enable us to examine the homotopy type of the sets of modular vector states, and relate it to the homotopy type of unitary groups and spaces of projections. We regard modular vector states as generalizations of pure states to the context of Hilbert C*-modules, and the above fibrations as generalizations of the projective fibration of a Hilbert space. 相似文献
6.
Let K be a function field over finite field
and let
be a ring consisting of elements of K regular away from a fixed place of K. Let be a Drinfeld
-module defined over an
-field L. In the case where L is a finite
-field, we study the characteristic polynomial
of the geometric Frobenius. A formula for the sign of the constant term of
in terms of leading coefficient of is given. General formula to determine signs of other coefficients of
is also derived. In the case where L is a global
-field of generic characteristic, we apply these formulae to compute the Dirichlet density of places where the Frobenius traces have the maximal possible degree permitted by the Riemann hypothesis. 相似文献
7.
A. A. Bulatov 《Algebra and Logic》1994,33(5):287-306
The lattice
of clones of functions over a k-element set is studied. It is shown that every lattice which is a countable direct product of finite lattices is embedded (up to isomorphism) in
and, hence, in
for k 4. This directly implies that every finite and any countable residually finite lattice is embedded in
, k 4, and that no nontrivial quasi-identity holds in
, k 4. A number of particular lattices (which are free in some lattice varieties) embeddable in
, k 4,are presented.
Translated fromAlgebra i Logika, Vol. 33, No. 5, pp. 514–549, September–October, 1994. 相似文献
8.
Let X and Y be two Hilbert spaces, and
the space of bounded linear transformations from X into Y. Let {A
}
be a weakly periodic sequence of period T. Spectral theory of weakly periodic sequences in a Hilbert space is studied by H. L. Hurd and V. Mandrekar (1991). In this work we proceed further to characterize {A
n} by a positive measure and a number T of
-valued functions a
0, . . . ,a
T–1; in the spectral form
, where
and is an
-valued Borel set function on [0, 2) such that
相似文献
9.
А. О. кАРАпЕтьН 《Analysis Mathematica》1994,20(3):185-203
Let B n be a domain and (y), y B and arbitrary positive, continuous function. If p, s (0, +), denote byH
s,
p
(T
B
) the class of the functionsf(z)f(x+iy), holomorphic in the tube domain
相似文献
10.
P. Cubiotti 《Journal of Optimization Theory and Applications》1997,92(3):477-495
Given a nonempty set
and two multifunctions
, we consider the following generalized quasi-variational inequality problem associated with X, : Find
such that
. We prove several existence results in which the multifunction is not supposed to have any continuity property. Among others, we extend the results obtained in Ref. 1 for the case (x(X. 相似文献
11.
M. S. Lyapina 《Journal of Mathematical Sciences》2004,120(2):1109-1116
A bi-Lipschitz continuous mapping of a space X is a bijection
such that
, where
. We write
if f is a Lipschitz (bi-Lipschitz) mapping of X into itself and denote by
the set of all bi-Lipschitz mappings of X that are not isometry. Thus,
if
and blip
. For X we consider a standard Cantor set K on the real line (with standard metric). The main result of this paper is formulated as follows:
where
Bibliography: 2 titles. 相似文献
12.
The paper deals with the problem of recovering the parameters (functions)
and
of the Maxwell dynamical system
13.
Siegfried Bosch 《manuscripta mathematica》1977,20(1):1-27
Let X be a rigid analytic space and assume that X admits a formal covering inducing on X the structure of a formal scheme. Then, dependent on such a formal structure one associates to X the reduction
which is a scheme of locally finite type over the residue field corresponding to the ground field in question. In this paper the cohomology groups of X are compared with the cohomology groups of
and a dimension formula is proved. As a consequence it is shown that X is affinoid
is affine and that an analytic map :XY which is compatible with the formal structures on X and Y is finite if and only if
is finite. 相似文献
14.
吴启光 《应用数学学报(英文版)》1995,11(4):378-388
QUADRATICESTIMATORSOFQUADRATICFUNCTIONSWITHPARAMETERSINNORMALLINEARMODELS¥WUQIGUANG(吴启光)(InstituteofSystemeScience,theChinese... 相似文献
15.
This paper deals with polarized pairs
, where
is a nonsingular projective threefold and
is a very ample line bundle on it, such that for one smooth member  |
|, one has (Â)=2. A large class of pairs whose adjoint line bundle is nef and big was indirectedly studied by Beltrametti and co-workers. We add some more information, both in this general case and also when the adjoint line bundle fails to be nef and big. 相似文献
16.
Let (X
t
) be a one dimensional diffusion corresponding to the operator
, starting from x>0 and T
0 be the hitting time of 0. Consider the family of positive solutions of the equation
with (0, ), where
. We show that the distribution of the h-process induced by any such is
, for a suitable sequence of stopping times (S
M
: M0) related to which converges to with M. We also give analytical conditions for
, where
is the smallest point of increase of the spectral measure associated to
. 相似文献
17.
M. D. Buhmann 《Constructive Approximation》1990,6(1):21-34
Let
or
. Givenf:
n
, we establish convergence orders of interpolation where the cardinal functionx withx(j)=0j
is a linear combination of integer shifts, of a fast decaying function
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