共查询到20条相似文献,搜索用时 312 毫秒
1.
R. J. Bagby 《Analysis Mathematica》1982,8(1):3-8
(, ) — R
m
×R
n
. f R
m
×R
n
fp,q, f L
p
(R
m) x y, Lq(Rn). ׃
q,r
cƒ
p,r
, ׃ R
m
×R
n
, , , q r . , ( ¦¦) K
0
(y); p, g r , K
0. 相似文献
2.
3.
E. S. Belinskii 《Analysis Mathematica》1984,10(4):275-282
. f- ,S
n
(f)— . {n
k
}, n
k+1/n
k
>1+ck
–
,— , 0<1/2, f
0,
. 相似文献
4.
Exact estimates for partially monotone approximation 总被引:2,自引:0,他引:2
G. L. Iliev 《Analysis Mathematica》1978,4(3):181-197
f(x) — , - [–1,1], (f, ) — , as— f, . . (- ) (x
i,x
i+ 1) (i=0, 1, ...,s–1; =–1,x
s,=1), f(x) . , n=0,1,...
n() , [– 1,1] signf(x) sign
n(x) 0, ¦f(x)–
n(x)¦ C(s) (f, 1/n+1, C(s) s. , - , « » . 相似文献
5.
In this paper, the authors define a multifunction F : X Y to be upper (lower) almost -continuous if F+(V) (F- (V)) is -open in X for every regular open set V of Y. They obtain some characterizations and several properties concerning upper (lower) almost -continuous multifunctions. 相似文献
6.
G. G. Gevorkyan 《Analysis Mathematica》1986,12(3):185-190
, (t) >0 E(–, +),E<, , ¦f(t)¦ (t)
xE, f(t)=0 (–, +). 相似文献
7.
The Dual of the martingale Hardy space ℋΦ with general Young function Φwith general Young function Φ
Bui Khoi Dam 《Analysis Mathematica》1988,14(4):287-294
[10], 1 . [4] K
q-, , 1p2 pp K
q, q=p/p–1)(q=+, p=1 K
= ). — p ⊃<<. , , , — , K
. , ( ) , q . 相似文献
8.
Yu. L. Ershov 《Algebra and Logic》1994,33(4):205-215
It is stated that if a Boolean family W of valuation rings of a field F satisfies the block approximation property (BAP) and a global analog of the Hensel-Rychlick property (THR), in which case F, W is called an RC*-field, then F is regularly closed with respect to the family W (The-orem 1). It is proved that every pair F, W, where W is a weakly Boolean family of valuation rings of a field F, is embedded in the RC*-field F0, W0 in such a manner that R0 R0 F, R0 W0 is a continuous map, W0 is homeomorphic over W to a given Boolean space, and R0 is a superstructure of R0 F for every R0 W0 (Theorem 2).Translated fromAlgebra i Logika, Vol. 33, No. 4, pp. 367–386, July-August, 1994. 相似文献
9.
10.
LetG be a cyclicallyk-edge-connected cubic graph withk 3. Lete be an edge ofG. LetG be the cubic graph obtained fromG by deletinge and its end vertices. The edgee is said to bek-removable ifG is also cyclicallyk-edge-connected. Let us denote by S
k
(G) the graph induced by thek-removable edges and by N
k
(G) the graph induced by the non 3-removable edges ofG. In a previous paper [7], we have proved that N
3(G) is empty if and only ifG is cyclically 4-edge connected and that if N
3(G) is not empty then it is a forest containing at least three trees. Andersen, Fleischner and Jackson [1] and, independently, McCuaig [11] studied N
4(G). Here, we study the structure of N
k
(G) fork 5 and we give some constructions of graphs such thatN
k
(G) = E(G). We note that the main result of this paper (Theorem 5) has been announced independently by McCuaig [11].
Résumé SoitG un graphe cubique cyliquementk-arête-connexe, aveck 3. Soite une arête deG et soitG le graphe cubique obtenu à partir deG en supprimante et ses extrémités. L'arêtee est ditek-suppressible siG est aussi cycliquementk-arête-connexe. Désignons par S k (G) le graphe induit par les arêtesk-suppressibles et par N k (G) celui induit par les arêtes nonk-suppressibles. Dans un précédent article [7], nous avons montré que N 3(G) est vide si et seulement siG est cycliquement 4-arête-connexe et que si N 3(G) n'est pas vide alors c'est une forêt possédant au moins trois arbres. Andersen, Fleischner and Jackson [1] et, indépendemment, McCuaig [11] ont étudié N 4(G). Ici, nous étudions la structure de N k (G) pourk 5 et nous donnons des constructions de graphes pour lesquelsN k (G) = E(G). Nous signalons que le résultat principal de cet article (Théorème 5) a été annoncé indépendamment par McCuaig [11].相似文献
11.
12.
(L
1,H) (, ) , ; H — . , , L
1 . [13] , . , , , . 相似文献
13.
A. Z. Mokhon'ko 《Ukrainian Mathematical Journal》1992,44(4):454-463
We obtain asymptotic estimates of meromorphic solutions to the differential equationP
n
(z, , )=P
n–1
(z, , ,...,
(m)
) in the angular domain P={z: arg z · }. Here Pn(z, w, w) is a polynomial in all variables, and of degree n with respect to w and w; Pn–1(z, w, w, ..., w(m)) is a polynomial in all variables, and of degree n –1 with respect to w, w, ..., w(m) In the particular case, when the solutions are entire functions, these estimates are more precise than the known estimates that are obtained by using the method of Wiman-Valiron, which cannot be applied to meromorphic solutions in the domain P.Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 44, No. 4, pp. 514–523, April, 1992. 相似文献
14.
Tassilo Küpper 《Numerische Mathematik》1976,25(2):201-214
Summary For differential operatorsM of second order (as defined in (1.1)) we describe a method to prove Range-Domain implications—Mu–u and an algorithm to construct these functions , , , . This method has been especially developed for application to non-inverse-positive differential operators. For example, for non-negativea
2 and for given functions = we require =C
0[0, 1] C
2([0, 1]–T) whereT is some finite set), (M) (t)(t), (t[0, 1]–T) and certain additional conditions for eachtT. Such Range-Domain implications can be used to obtain a numerical error estimation for the solution of a boundary value problemMu=r; further, we use them to guarantee the existence of a solution of nonlinear boundary value problems between the bounds- and . 相似文献
15.
16.
L. Leindler 《Analysis Mathematica》1995,21(1):23-33
, , . .
Dedicated to Academician S. M. Nikol'skii on his 90th birthday
This research was partially supported by the Hungarian National Foundation for Scientific Research under Grant # 234. 相似文献
Dedicated to Academician S. M. Nikol'skii on his 90th birthday
This research was partially supported by the Hungarian National Foundation for Scientific Research under Grant # 234. 相似文献
17.
A. V. Malyshev 《Journal of Mathematical Sciences》1982,20(6):2620-2635
A computer-assisted proof is given of Minkowski's conjecture on the critical determinant of the region xp+yp<1 in the cases 1.03p 1.9745, p2.40, p2.577.Translated from Zapiski Nauchnykh Seminarov Leningradskogo Otdeleniya Matematicheskogo Instituta im. V. A. Steklova AN SSSR, Vol. 71, pp. 163–180, 1977. 相似文献
18.
Gábor Elek 《K-Theory》1998,13(1):1-22
We prove that, for any exact category M, any element of K1(M)can be described in terms of a pair of admissible monomorphisms A X, B Y and an isomorphism :A X/A Y B Y/B X. 相似文献
19.
Ch. Pommerenke 《Analysis Mathematica》1977,3(4):291-297
f . , , — , A f f(). , , f() 0 . , , ,A , f . , f() - f() . , , . (1976) ( ¦f(z)¦<1) . . (1969) ( ). 相似文献
20.
J. Mogyoródi 《Analysis Mathematica》1981,7(3):185-197
, , . . . [1], , . , , ., , L logL. , , . . . . [5]. , . 相似文献