scholarly journals Set inner amenability for semigroups

2020 ◽  
Vol 4 (3) ◽  
pp. 176-183
Author(s):  
Moslem AMİNİ NİA ◽  
Ali EBADİAN
Keyword(s):  
2017 ◽  
Vol 11 (3) ◽  
pp. 173-179
Author(s):  
H. Sadeghi ◽  
M. Lashkarizadeh Bami

2017 ◽  
Vol 38 (7) ◽  
pp. 2618-2624 ◽  
Author(s):  
TOBE DEPREZ ◽  
STEFAAN VAES

We say that a countable group $G$ is McDuff if it admits a free ergodic probability measure preserving action such that the crossed product is a McDuff $\text{II}_{1}$ factor. Similarly, $G$ is said to be stable if it admits such an action with the orbit equivalence relation being stable. The McDuff property, stability, inner amenability and property Gamma are subtly related and several implications and non-implications were obtained in Effros [Property $\unicode[STIX]{x1D6E4}$ and inner amenability. Proc. Amer. Math. Soc.47 (1975), 483–486], Jones and Schmidt [Asymptotically invariant sequences and approximate finiteness. Amer. J. Math.109 (1987), 91–114], Vaes [An inner amenable group whose von Neumann algebra does not have property Gamma. Acta Math.208 (2012), 389–394], Kida [Inner amenable groups having no stable action. Geom. Dedicata173 (2014), 185–192] and Kida [Stability in orbit equivalence for Baumslag–Solitar groups and Vaes groups. Groups Geom. Dyn.9 (2015), 203–235]. We complete the picture with the remaining implications and counterexamples.


2013 ◽  
Vol 50 (1) ◽  
pp. 26-30
Author(s):  
Mohammad Ghanei ◽  
Mehdi Nemati

For two locally compact groups G and H, we show that if L1(G) is strictly inner amenable, then L1(G × H) is strictly inner amenable. We then apply this result to show that there is a large class of locally compact groups G such that L1(G) is strictly inner amenable, but G is not even inner amenable.


2003 ◽  
Vol 40 (3) ◽  
pp. 293-299
Author(s):  
R. Memarbashi ◽  
A. Riazi

For a locally compact group G, we investigate topological inner invariant means on L8(G) and its subspaces. In particular, we characterize strict inner amenability of L1(G) to study the relation between this notion and strict inner amenability of G.


1975 ◽  
Vol 47 (2) ◽  
pp. 483 ◽  
Author(s):  
Edward G. Effros
Keyword(s):  

2014 ◽  
Vol 25 (05) ◽  
pp. 1450051 ◽  
Author(s):  
Mehdi Nemati

For a locally compact quantum group 𝔾, we generalize some notions of amenability such as amenability of locally compact quantum groups and inner amenability of locally compact groups to the case of right Banach L1(𝔾)-modules. Also, we investigate the concept of harmonic functionals over right Banach L1(𝔾)-modules and use these devices to study, among others, amenability of 𝔾.


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