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South African universities boast a remarkable solar photovoltaic (PV) resource as a primary renewable energy component. Due to high peak demand tariffs and inherent prominent heating and cooling loads, fast and granular demand response programs are well ...
Stephanus Erasmus +2 more
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Suicide epidemic in Malawi: what can we do?
Suicide continues to be a global health concern, affecting all continents. Although some studies have associated it with mental disorders such as severe depression, research also shows that a significant number of cases occur due to emerging life ...
Gift Treighcy Banda +3 more
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The R ∞ property for free groups, free nilpotent groups and free solvable groups [PDF]
Let $F$ be either a free nilpotent group of a given class and of finite rank or a free solvable group of a certain derived length and of finite rank. We show precisely which ones have the $R_{\infty}$ property. Finally, we also show that the free group of infinite rank does not have the $R_{\infty}$ property.
Dekimpe, Karel, Gonçalves, Daciberg
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Introduction Ege University is a pioneering university at Ege region with its 70 000 students and approximately 3000 academic staff. Tobacco control policies, parallel to the current regulations in the country, are an important issue for Ege University ...
Isil Ergin +15 more
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Free group automorphisms with parabolic boundary orbits [PDF]
For $N\geq 4$, we show that there exist automorphisms of the free group $F_N$ which have a parabolic orbit in $\partial F_N$.
Arnaud Hilion, Ghys
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On one A.I. Mal’cev’s Question from the ”Kourovskaya Notebook”
It is shown that the derived subgroup of the free group is not first-oder definable.
V. G. Durnev
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The Axiomatics of Free Group Rings [PDF]
In [FGRS1,FGRS2] the relationship between the universal and elementary theory of a group ring $R[G]$ and the corresponding universal and elementary theory of the associated group $G$ and ring $R$ was examined.
Benjamin Fine +4 more
doaj +1 more source
The automorphism group of the free group of rank two is a CAT(0) group [PDF]
We prove that the automorphism group of the braid group on four strands acts faithfully and geometrically on a CAT(0) 2-complex. This implies that the automorphism group of the free group of rank two acts faithfully and geometrically on a CAT(0) 2 ...
Piggott, Adam +2 more
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Background Obstructive sleep apnoea (OSA) presents a major healthcare challenge with current UK data suggesting that only 22% of individuals have been diagnosed and treated.
Stephanie K Mansell +5 more
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The purpose of this paper is to provide a brief expository sketch of [Proc. Am. Math. Soc. 12, 737-743 (1961; Zbl 0106.026)].
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