48,351 research outputs found
FINITENESS CONDITIONS ON SUBGROUPS OF PROFINITE p-POINCARE DUALITY GROUPS
No full textConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)For a prime number p let G be a profinite p-PD(n) group with a closed normal subgroup N such that G/N is a profinite p-PD(m) group and that H(i)(V,F(p)) is finite for every open subgroup V of N and all i <= [n/2]. Generalising [12, Thm. 3.7.4] we show that m <= n and N is a profinite p-PD(n-m) group. In case that G is a pro-p PD(n) group of Euler characteristic 0 with a closed normal subgroup N of type FP([n-1/2]) such that G/N is soluble-by-finite pro-p group of finite rank, we show that N is a pro-p PD(n-m) group, where m = vcd(p)(G/N). As a corollary we obtain that a pro-p PD(3) group with infinite abelianization is either soluble or contains a free nonprocyclic pro-p subgroup.1731367377Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)FEMAT-DF, BrazilConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq
THE CENTRAL POLYNOMIALS FOR THE GRASSMANN ALGEBRA
No full textConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)In this paper we describe the central polynomials for the infinite-dimensional unitary Grassmann algebra G over an infinite field F of characteristic not equal 2. We exhibit a set of polynomials that generates the vector space C( G) of the central polynomials of G as a T-space. Using a deep result of Shchigolev we prove that if char F = p > 2 then the T-space C( G) is not finitely generated. Moreover, over such a field F, C( G) is a limit T-space, that is, C( G) is not a finitely generated T-space but every larger T-space W not greater than or equal to C( G) is. We obtain similar results for the infinite-dimensional non-unitary Grassmann algebra H as well.1791127144Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FAPDFFINATECConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP
Spatial Patterns of Crime in Israel: Investigating the Effects of Inter-urban Inequality and Proximity
No full textMany crimes in Israel, specifically property-related, are perpetrated by those who live outside localities where the crime is committed. As a result, crime rates are strongly affected by settlement patterns: Affluent localities surrounded by poor towns tend to exhibit relatively high crime rates. In order to measure the effect of urban inequality and proximity on crime rates, the Index of Relative Income (IRI) is proposed. This index is estimated as the ratio between the average income in a town and that in its neighbouring localities. As multivariate analysis indicates, the proposed index helps to explain the variation of property crime rates across urban localities, implying that the spatial unevenness of urban development (i.e. aerial proximity of affluent and poor towns) may spur property crimes. The findings of the present study lend support to regional development programs, aimed at minimizing spatial disparities in regional and urban development.
A Fourier approach for nonlinear equations with singular data
No full textFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)For 0 n/(n - m), we study the inhomogeneous equation L (u) +u (p) + V (x)u + f(x) = 0 in a'e (n) with singular data f and V. The symbol sigma of the operator L is bounded from below by |xi| (m) . Examples of L are Laplacian, biharmonic and fractional order operators. Here f and V can have infinite singular points, change sign, oscillate at infinity, and be measures. Also, f and V can blow up on an unbounded (n-1)-manifold. The solution u can change sign, be nonradial and singular. If sigma, f and V are radial, then u is radial. The assumptions on f and V are in terms of their Fourier transforms and we provide some examples.193183107Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq
The Effect of Migrant Workers on Employment,Real Wages and Inequality The Case of Israel -1995 to 2000
No full textThis paper deals with the impact of migrant workers on the Israeli wage structure, on the chances of being unemployed or out of the labor force and on inequality in gross earnings from work. One of the manifestations of globalization is the movement of migrant workers from low-income to richer countries.The recent increase in living standards in Israel has created significant wage differentials for workers from low-income countries. Paradoxically,an important trigger for this process was also the worsening of Israel’s security situation in 1993,following the Oslo accord between Israel and the Palestinians.Israel responded to the deterioration by closures,which sharply reduced the number of Palestinian workers in Israel,substituting them with migrant workers, mainly from Eastern Europe,South and Central America and the Far East. The rapid inflow of migrant workers,especially since 1995,makes Israel an interesting case study for studying its effects on labor force participation, unemployment,the wage structure and gross earnings inequality.Given the bias in the government’s permit policy in favor of unskilled workers,the paper emphasizes the effects on Israelis with weak economic endowments. The research is based on pooled micro data,combined with data on the number of non-Israeli workers by economic branch.The micro-data is based on the Israeli income survey,including a host of personal characteristics,such as the individual’s education level,labor market status and a model-based calculation of welfare benefits. The research also focuses on government policy issues,such as the effect of the replacement ratio on the rate of labor force participation.For individuals not in the labor force the replacement ratio is defined as the income support payment divided by the potential wage.The inflow of migrant workers affects the potential wage negatively and together with a relatively easy access to income support payments,this policy variable is found to contribute significantly to the explanation of the exclusion from the labor force and the worsening of gross earnings distribution in a statistically significant way.The effect of these variables on unemployment is less clear and the effects on the wage structure are varied,distinguishing between substitutive and complementary effects,depending on the individual’s occupational and educational characteristics as well as on the time perspective. The study also shows that the highly branch-specific Israeli migrant permit policy did not prevent the effects on wages from spreading throughout the economy,thus emphasizing the general-equilibrium nature of these effects.Migrants; Foreign workers; Israel; Income inequality; Employment
Errata to Eskov et al. (2024)
No full textWhile all possible care was exercised during preparation of the article by Eskov et al. (2024), most unfortunate errors crept inadvertently into the caption to Fig. 1 and in the text (p. 94).
The caption should read (highlighted in bold):Fig. 1: Clavate trichobothria of Liphistiidae and Mygalomorphae on tarsus III (A–C, E, F) and II, showing also filiform trichobothria (D): (A, C) Liphistius desultor (Liphistiidae), (C) same, enlarged, (D) Hapalopus formosus (Theraphosidae), (E) Ummidia gandjinoi (Halonoproctidae), (F) Ischnocolus meron (Theraphosidae).
The text on page 94 should read (highlighted in bold):“However, the above-mentioned morphological differences seem overrated. In Liphistius the clavate trichobothria, in fact, are “interspersed among the filiform ones” in the same way as in mygalomorphs (Fig. 1A cf. Fig. 1D). In theraphosids and barychelids “rows of tiny spikes” on setal shaft surface clearly differ from the Liphistius ones, being sufficiently smaller and arranged in longitudinal (non-oblique) rows (Fig. 1C cf. Fig. 1F; Guadanucci 2012, figs 18, 134), whereas the clavate trichobothria of the halonoproctid genus Ummidia Thorell, 1875 (Fig. 1E) and the idiopid genus Prothemenops (Schwendinger & Hongpadharakiree 2014, fig. 1C) seem indistinguishable in this respect from the Liphistius ones (Fig. 1C).”The authors and editorial office apologise for any inconvenience these mistakes might have caused.
REFERENCESEskov, K.Y., Zonstein, S.L. & Marusik, Y.M. 2024. On the liphistiomorph trichobothria and the significance of their structure for tracking the bothria evolution in the order Araneae. Israel Journal of Entomology 53: 93–112. https://doi.org/10.5281/zenodo.12790018
To cite: [Editorial Office]. 2024. Errata to Eskov et al. (2024). Israel Journal of Entomology 53: 113. DOI: 10.5281/zenodo.13254196urn:lsid:zoobank.org:pub:96D556B5-E781-49CF-91BF-37CC8750F1D
G. F. Abbott. — Israel in Europe. London, Macmillan, 1907
No full textRonzevalle Sébastien. G. F. Abbott. — Israel in Europe. London, Macmillan, 1907. In: Mélanges de la Faculté orientale, tome 3 fasc. 2, 1909. p. 26
Interregional inequalities in Israel: Explanatory model and empirical data
No full textAn explanatory model of regional inequality is proposed, which attempts to explain a spatial distribution of different income groups. According to this model, such a distribution is a function of the relation between the cost of living in a particular geographic area and actual income of its inhabitants. The applicability of this model to spatial inequalities in Israel is investigated, using data from five subsequent censuses of population and housing. The analysis indicates that there is no universal trend in the development of inequalities, examined from either a temporal or a spatial point of view. Instead, the extent of interregional disparities appears to differ when various indicators of inequality are considered. Measures of population distribution and wealth indicate the highest extent of interregional disparities, whilst the country's regional development appears to be the least uneven when indicators of education and participation in the labor force are considered. Temporally, most indicators of welfare and population distribution tend to diverge over time, reflecting increasing interregional disparities. In contrast, variables related to education and housing tend to converge, indicating a reduction in inequality. Moreover, the change in inequality appears to differ across various geographic areas: Whereas development in the central part of Israel has tended to become more uniform over time, the country's peripheral regions have developed towards further polarization of their socio-economic development. As a result of the analysis, several strategies are proposed aimed at reducing the extent of interregional disparities.
Children and families in Israel. Some mental health perspectives. Kleinberger A. F., Society, schools and progress in Israel.
No full textBensimon Doris. Children and families in Israel. Some mental health perspectives. Kleinberger A. F., Society, schools and progress in Israel.. In: Revue française de sociologie, 1971, 12-2. p. 278
- …
