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A p-group G is p-central if Gp ≤ Z(G), and G is p2-abelian if (xy)p2 = xp2 yp2 for all x; y ε G. We prove that for G a finite p2-abelian p-central p-group, excluding certain cases, the order of G divides the order of Aut(G).
We use Schlage-Puchta's concept of p-deficiency and Lackenby's property of p-largeness to show that a group having a finite presentation with p-deficiency greater than 1 is large, which implies that Schlage-Puchta's infinite finitely generated p-groups are not finitely presented. We also show that for all primes p at least 7, any group having a presentation of p-deficiency greater than 1 is GolodS
A global energy transition requires alternatives to fossil fuels in energy-intensive industries and transport sectors, which are particularly reliant on the unique material properties of fossil fuels as fuel and as feedstock. Renewable energy transitions, therefore, demand large-scale investments in green hydrogen to produce substitutes as a means of indirect electrification. In the context of Eur
This article provides some brief reflections on the ideas raised in the special issue on the social dimension of EU trade policies from a normative power (NP) perspective. A NP perspective attempts to understand and judge the ideational aspects of the EU by studying the EU’s principles, actions and impact in world politics. The article first elaborates on the role of labour rights as human rights
The mythology of the European Union (EU) in world politics can be told and untold in many different ways. This article focuses on the lore or stories of who did what to whom, the ideological projection of the past onto the present and the escapist pleasure of storytelling in looking at the mythology of ‘global Europa’– the EU in the world. It concludes with a reflection on the way in which the man
The role of symbolism in European integration provides one way of answering Craig Calhoun's 2003 call in Comparative European Politics for a means of transcending specific regimes of analysis in order to advance European studies. The article argues that our understanding of the integration process and the constitution of the European Union (EU) is furthered by broadly studying symbolic forms in a
The European Union is often compared to other political systems in order to better understand its basic features and how they structure politics. This article argues that this focus on comparative politics instils a domestic bias into the study of the EU, which also ignores the impact of enlargement. To remedy this, a comparison is suggested between the order of the EU as a regional international
Boken skall– dels ge en introduktion till den unika rättsordning inom folkrätten, som Nordatlantiska fördragsorganisationen – Nato – och dess verksamhet grundar sig på och som benämns Natorätt,– dels förklara hur Sverige påverkas av den som part i nordatlantiska fördraget (SÖ 2024:1).The book- provides an introduction to the unique legal regime in international law on which the North Atlantic Treaty Organization - NATO - and its activities are based, known as NATO law, and- explains how Sweden is affected by it as a party to the North Atlantic Treaty.
The themes of this workshop on EU civilian and military power mirror nicely the three aspects of normative power Europe that I set out to interrogate over five years ago (see a first consideration in Manners 2000a). As the above abstract from my JCMS article makes clear, I argued that previous theoretical accounts of the EU had underplayed the ontological conceptualisation of the EU as a changer o
This is a study of a Soviet espionage mission in Sweden in 1942 under the aegis of the intelligence officer Vasilii Sidorenko. Aside from trying to reconstruct, on the basis of material filed with the archive of the Swedish Security Police (Säpo), the history of the mission, the article also addresses methodological challenges following from the fact that we must, as Soviet material remains very sThis is a study of a Soviet espionage mission in Sweden in 1942 under the aegis of the intelligence officer Vasilii Sidorenko. Aside from trying to reconstruct, on the basis of material filed with the archive of the Swedish Security Police (Säpo), the history of the mission, the article also addresses methodological challenges following from the fact that we must, as Soviet material remains very s
Exempel på saker som tas upp i rapporten:- Ett stort antal jämförelser mellan de nordiska länderna.- Rekordstor klyfta mellan arbetarnas och tjänstemännens organisationsgrad: 58 respektive 73 procent 2023 = 15 procentenheter. - Den fackliga organisationsgraden steg under ”pandemiåren” 2020 och 2021 men sjönk under ”inflationsåren” 2022 och 2023. Nedgången var mindre 2023 än 2022. - Antalet yrkesak
Polymer solutions in the dilute regime play a significant role in industrial applications. Due to the intricate rheological properties of these highly viscoelastic fluids, especially in complex flow geometries, a thorough numerical analysis of their flow dynamics is imperative. In this research, we present a numerical investigation of purely elastic instability occurring in two- and three-dimensio
Elastic turbulence has emerged as a promising method to enhance heat transfer performance at the microscale. However, previous studies have mainly focused on the overall convective heat transfer performance in curved channels, overlooking the fact that the chaotic flow intensity varies along the streamline, leading to diverse local heat transfer characteristics. In this study, we systematically in
We numerically investigate the spatial and temporal statistical properties of a dilute polymer solution in the elastic turbulence regime, i.e., in the chaotic flow state occurring at vanishing Reynolds and high Weissenberg numbers. We aim at elucidating the relations between measurements of flow properties performed in the spatial domain with the ones taken in the temporal domain, which is a key p
The aggregation properties of heavy inertial particles in the elastic turbulence regime of an Oldroyd-B fluid with periodic Kolmogorov mean flow are investigated by means of extensive numerical simulations in two dimensions. Both the small- and large-scale features of the resulting inhomogeneous particle distribution are examined, focusing on their connection with the properties of the advecting v
