共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
3.
4.
5.
6.
7.
Ngô Viêt Trung 《Monatshefte für Mathematik》1980,89(4):323-340
LetV/k be an irreducible algebraic variety over a fieldk in an affinen-space andF
u
a generic hypersurface defined byu
1
f
1 (X)+...+u r f
r(X)=0, whereu
1...,u
r are indeterminates overk andf
1(X), ...,f
r(X) are polynomials ink[X
1, ...,X
n]. Let (E) be a property which an arbitrary algebraic variety could have, e. g. irreducibility, normality (local or global), ... Then it will be studied under which conditions off
1(X), ...,f
r(X) (E) may be transfered fromV/k toVF
u
/k(u) (and conversely). 相似文献
8.
9.
10.
11.
Monatshefte für Mathematik - 相似文献
12.
Hans-Joachim Petzsche 《manuscripta mathematica》1979,27(3):221-251
Continuing the research of part I conditions equivalent to ()- or ()-nuclearity of spaces of ultradifferential functions and their duals as well as some applications are given. To get these results it is shown that tensor products of smooth sequence spaces, power series spaces, and spaces S(Mq) introduced in part I are isomorphic to suitable sequence spaces of the same class, which are stable provided the factors are stable power series spaces. Hence it is possible to establish isomorphisms between different functions spaces, to calculate the nuclearity types of tensor products by the nuclearity types of the factors, and to prove that the class of ()- or ()-nuclear spaces is closed under forming tensor products iff is multiplicatively stable. 相似文献
13.
Hans-Joachim Petzsche 《manuscripta mathematica》1978,24(2):133-171
This article is concerned with ultradistribution spaces in the sense of Komatsu. For these spaces several tensor product theorems, especially Schwartz's kernels theorem for ultradistributions, are proved. Criteria which ensure that a nuclear locally convex space has an absolute basis are given and used to represent the spaces of periodic ultradifferential functions as Köthe sequence spaces. These results permit to state conditions on a sequence {Mp} which are equivalent to nuclearity, s-nuclearity or-as will be shown in part II-even -nuclearity of the corresponding ultradistribution spaces. Under some natural conditions the Beurling ultradistribution spaces defined by Komatsu are shown to constitute a proper subclass of those introduced by Beurling. 相似文献
14.
Stefan Hildebrandt 《Mathematische Annalen》1962,148(3):226-237
Ohne ZusammenfassungMeinem Lehrer, Herrn Prof. Dr.Ernst Hölder, der mich auf die Arbeiten vonMorrey undCalkin hingewiesen hat, danke ich hiermit sehr. 相似文献
15.
16.
17.
18.
19.
20.