Spacetimes with a preferred null direction and a two-dimensional group of isometries: the null dust case

1987 ◽  
Vol 4 (3) ◽  
pp. 599-618 ◽  
Author(s):  
C A Kolassis ◽  
N O Santos
2017 ◽  
Vol 34 (8) ◽  
pp. 087701 ◽  
Author(s):  
Jing Shi ◽  
Yong Gao ◽  
Xiao-Li Wang ◽  
Si-Ning Yun

2020 ◽  
Vol 22 (21) ◽  
pp. 12260-12266
Author(s):  
Xin-Yue Lin ◽  
Fan-Shun Meng ◽  
Qi-Chao Liu ◽  
Qi Xue ◽  
Hui Zhang

A series of two-dimensional (2D) single-layer binary group VA–VA crystals, where VA represents P, As, Sb and Bi, are explored by the first-principles calculations.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Maria Stella Prete ◽  
Davide Grassano ◽  
Olivia Pulci ◽  
Ihor Kupchak ◽  
Valerio Olevano ◽  
...  

2011 ◽  
Vol 22 (03) ◽  
pp. 399-406
Author(s):  
R. MIRZAIE

We show that the orbit space of Euclidean space, under the action of a closed and connected Lie group of isometries is homeomorphic to a plane or closed half-plane, if the action is of cohomogeneity two.


Sign in / Sign up

Export Citation Format

Share Document