Results 31 to 40 of about 221 (141)
Extended Armendariz Rings [PDF]
, 2013 In this note we introduce central linear Armendariz rings as a generalization of Armendariz rings and investigate their properties.
Agayev, Nazım +2 more
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Journal of Mathematics, 2014 The concept of nil-symmetric rings has been introduced as a generalization of symmetric rings and a particular case of nil-semicommutative rings. A ring R is called right (left) nil-symmetric if, for a,b,c∈R, where a,b are nilpotent elements, abc=0 (cab=
Uday Shankar Chakraborty, Krishnendu Das
doaj +1 more source
Globalization, internal migration, and public goods provision in emerging economies
American Journal of Political Science, EarlyView.Abstract Globalization can introduce new employment opportunities to emerging economies in multinational corporations and exporting firms. Who is best positioned to benefit, and what are the political consequences for “left behind” areas? We argue that primarily advantaged groups seize these opportunities through internal migration toward centers of ...
Benjamin Helms, Junghyun Lim
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Management coverage and spatial gaps for carnivore habitat across Mexico
Conservation Science and Practice, Volume 8, Issue 9, September 2026.We evaluated the spatial overlap between four land management types and the habitat of 28 terrestrial carnivores in Mexico. Our findings reveal that non‐designated land management types like Indigenous Territories may provide significant habitat coverage, and that significant coverage gaps for carnivores remain.
Germar González, Nyeema C. Harris
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Journal of Applied Mathematics, 2013 As a generalization of α-skew McCoy rings, we introduce the concept of α-skew π-McCoy rings, and we study the relationships with another two new generalizations, α-skew π1-McCoy rings and α-skew π2-McCoy rings, observing the relations with α-skew McCoy ...
Areej M. Abduldaim, Sheng Chen
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Central Armendariz rings. [PDF]
, 2011 Let \(R\) be a ring with 1, \(C\) the center of \(R\), \(R[x]\) the polynomial ring with an indeterminate \(x\), and \(R[x,x^{-1}]\) the Laurent polynomial ring. If \((\sum_{i=0}^n a_ix^i)(\sum_{j=0}^m b_jx^j)=0\) for \(\sum_{i=0}^n a_ix^i,\sum_{j=0}^m b_jx^j\not=0\) in \(R[x]\) implies that \(a_ib_j\in C\) for all \(i\) and \(j\), then \(R\) is called
HALICIOĞLU, SAİT +3 more
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Water Resources Research, Volume 62, Issue 5, May 2026.Abstract Large‐scale groundwater quality prediction is often constrained by sparse sampling, limiting the reliability of spatial assessments. This study introduces Tabular Prior‐data Fitted Network (TabPFN), a machine learning model based on prior‐fitting networks, to address this challenge and enable high‐precision mapping of groundwater bicarbonate ...
Tong Sun +8 more
wiley +1 more source
NEW DATA ON THE SERTORIAN WAR AT THE VASCON SITE OF IRULEGI (ARANGUREN VALLEY, NAVARRE)
Oxford Journal of Archaeology, Volume 45, Issue 2, Page 180-203, May 2026.Summary Literary sources provide limited information on specific developments during the civil wars of the late Roman Republic, including the Sertorian War. This study describes the attack on the Vascon settlement of Irulegi (Aranguren valley, Navarre), in northern Spain, within the context of this conflict, using the methodological and theoretical ...
Mattin Aiestaran +12 more
wiley +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.Abstract Despite a 2.1‐fold increase in oil and gas (O&G) production from 2012 to 2021 in the Wattenberg Field (WF) area of the Denver‐Julesburg Basin (DJB), total methane (CH4) emissions have remained unchanged within measurement uncertainties (26.0 ± 6.8 t/hr in 2012, 24.0 ± 5 t/hr in 2015, and 21.4 ± 5.7 t/hr in 2021), while ethane (C2H6) emissions ...
H. M. Daley +19 more
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International Migration, Volume 64, Issue 2, April 2026.ABSTRACT Migration scholars often present democratic decline as an emigration driver. This effect is more pronounced among highly‐skilled citizens who have the resources and capability to settle abroad. Yet, not much attention has been paid to why highly‐skilled emigrants would opt to return to their autocratizing countries, even if they are concerned ...
Gülay Türkmen
wiley +1 more source