Collineations of Godel‐type space‐times

1992 ◽  
Vol 33 (6) ◽  
pp. 2258-2261 ◽  
Author(s):  
A. Melfo ◽  
L. Nún̄ez ◽  
U. Percoco ◽  
V. M. Villalba
Keyword(s):  
Type Space

scholarly journals Improving KKM Theory on General Metric Type Spaces

2021 ◽  
Vol 9 (1) ◽  
pp. 1-12
Author(s):  
Sehie Park
Keyword(s):  
Convex Space ◽  
Metric Spaces ◽  
Space Theory ◽  
Type Space ◽  
Generalized Metric ◽  
Abstract Convex Space ◽  
Type Spaces

Abstract A generalized metric type space is a generic name for various spaces similar to hyperconvex metric spaces or extensions of them. The purpose of this article is to introduce some KKM theoretic works on generalized metric type spaces and to show that they can be improved according to our abstract convex space theory. Most of these works are chosen on the basis that they can be improved by following our theory. Actually, we introduce abstracts of each work or some contents, and add some comments showing how to improve them.

scholarly journals Some estimates for the commutators of multilinear maximal function on Morrey-type space

2021 ◽  
Vol 19 (1) ◽  
pp. 515-530
Author(s):  
Xiao Yu ◽  
Pu Zhang ◽  
Hongliang Li
Keyword(s):  
Maximal Function ◽  
Morrey Space ◽  
Morrey Spaces ◽  
Bounded Mean Oscillation ◽  
Generalized Morrey Spaces ◽  
Type Space ◽  
Bmo Function ◽  
Mean Oscillation ◽  
Multilinear Maximal Function ◽  
Equivalent Conditions

Abstract In this paper, we study the equivalent conditions for the boundedness of the commutators generated by the multilinear maximal function and the bounded mean oscillation (BMO) function on Morrey space. Moreover, the endpoint estimate for such operators on generalized Morrey spaces is also given.

New variable martingale Hardy spaces

2021 ◽  
pp. 1-29
Author(s):  
Yong Jiao ◽  
Dan Zeng ◽  
Dejian Zhou
Keyword(s):  
Brownian Motion ◽  
Hardy Space ◽  
Hardy Spaces ◽  
Stochastic Integral ◽  
Lebesgue Spaces ◽  
Type Space ◽  
Variable Lebesgue Spaces ◽  
Martingale Inequalities

We investigate various variable martingale Hardy spaces corresponding to variable Lebesgue spaces $\mathcal {L}_{p(\cdot )}$ defined by rearrangement functions. In particular, we show that the dual of martingale variable Hardy space $\mathcal {H}_{p(\cdot )}^{s}$ with $0<p_{-}\leq p_{+}\leq 1$ can be described as a BMO-type space and establish martingale inequalities among these martingale Hardy spaces. Furthermore, we give an application of martingale inequalities in stochastic integral with Brownian motion.

scholarly journals Verification of large beam-type space structures

1987 ◽  
Vol 24 (5) ◽  
pp. 469-473 ◽  
Author(s):  
Choon-Foo Shih
Keyword(s):  
Space Structures ◽  
Type Space ◽  
Beam Type

A split-matrix runge-kutta type space marching procedure

1992 ◽  
Vol 102 (2) ◽  
pp. 319-335 ◽  
Author(s):  
C Weiland
Keyword(s):  
Type Space ◽  
Runge Kutta

Dynamics of complex truss-type space structures

AIAA Journal ◽  
1990 ◽  
Vol 28 (7) ◽  
pp. 1250-1258 ◽  
Author(s):  
Y. Yong ◽  
Y. K. Lin
Keyword(s):  
Space Structures ◽  
Type Space

scholarly journals QKtype spaces of analytic functions

2006 ◽  
Vol 4 (1) ◽  
pp. 73-84 ◽  
Author(s):  
Hasi Wulan ◽  
Jizhen Zhou
Keyword(s):  
Unit Disk ◽  
Analytic Functions ◽  
Sufficient Conditions ◽  
Nondecreasing Function ◽  
Necessary And Sufficient Conditions ◽  
Type Space ◽  
Necessary And Sufficient ◽  
Spaces Of Analytic Functions

For a nondecreasing functionK:[0,8)?[0,8)and0<p<8,-2<q<8, we introduceQK(p,q), aQKtype space of functions analytic in the unit disk and study the characterizations ofQK(p,q). Necessary and sufficient conditions onKsuch thatQK(p,q)become some known spaces are given.

scholarly journals Type space on a purely measurable parameter space

2005 ◽  
Vol 26 (1) ◽  
pp. 129-139 ◽  
Author(s):  
Mikl�s Pint�r
Keyword(s):  
Parameter Space ◽  
Type Space ◽  
Measurable Parameter

A novel signal processing approach for LEO space debris based on a fence-type space surveillance radar system

2012 ◽  
Vol 50 (11) ◽  
pp. 1462-1472 ◽  
Author(s):  
Jian Huang ◽  
Weidong Hu ◽  
Mounir Ghogho ◽  
Qin Xin ◽  
Xiaoyong Du ◽  
...  
Keyword(s):  
Signal Processing ◽  
Space Debris ◽  
Radar System ◽  
Type Space ◽  
Processing Approach

Coloring variants of the Re3B type

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Stefan Seidel ◽  
Rainer Pöttgen
Keyword(s):  
Basic Structure ◽  
Crystal Chemical ◽  
Space Group ◽  
Type Space ◽  
Symmetry Reductions ◽  
Phase Precipitate ◽  
Lower Symmetry ◽  
Trigonal Prisms

Abstract The Re3B type, space group Cmcm, has boron-centered trigonal prisms as central building units and is one of the basic structure types with numerous binary and ternary representatives. The coloring of different atoms on the two crystallographically independent rhenium sites leads to a manifold of compounds with different bonding peculiarities that are rather isopointal than isotypic with the prototype. Typical compounds are the S-phase precipitate MgCuAl2, the silicide ScPt2Si or the iodide Th0.5Pb0.5I3 (PuBr3 type). Differences in size or composition might force symmetry reductions. This is discussed for YZn3 (space group Pnma) and the different coloring variants ScRhSi2 and TaNi2P which show different twists of the trigonal prisms. Striking singular representatives with lower symmetry structures are BaThBr6 (Pmma) and NbCo2B (P21/c) which allow different ordering/distortion patterns for the prisms. All these crystal chemical details are discussed on the basis of group subgroup schemes (Bärnighausen trees).

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