Results 51 to 60 of about 28,496 (163)
Comparing notions of presentability in Polish spaces and Polish groups
Annals of Pure and Applied LogiczbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sapir Ben-Shahar, Heer Tern Koh
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New Degree Spectra of Polish Spaces
Siberian Mathematical Journal, 2021 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Polish Metric Spaces: Their Classification and Isometry Groups [PDF]
Bulletin of Symbolic Logic, 2001 § 1. Introduction. In this communication we present some recent results on the classification of Polish metric spaces up to isometry and on the isometry groups of Polish metric spaces. A Polish metric space is a complete separable metric space (X, d).Our first goal is to determine the exact complexity of the classification problem of general Polish ...
John D. Clemens +2 more
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Ion-acoustic solitary waves and spectrally uniform scattering cross section enhancements [PDF]
Annales Geophysicae, 2010 Spectra measured by incoherent scatter radars are formed predominantly by scattering of the incident signal off ion-acoustic and Langmuir waves in the ionosphere.
J. Ekeberg +4 more
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Beginning of stability theory for Polish spaces [PDF]
Israel Journal of Mathematics, 2016 We consider stability theory for Polish spaces and more generally for definable structures (say, with elements of a set of reals). We clarify by proving some equivalent conditions for $\aleph_0$-stability. We succeed to prove existence of indiscernibles under reasonable conditions; this gives strong evidence that such a theory exists.
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Varying Calcium Abundances in Solar Flares Seen by the Solar Maximum Mission
The Astrophysical Journal, 2023 We report on calcium abundance A (Ca) estimates during the decay phases of 194 solar X-ray flares using archived data from the Bent Crystal Spectrometer (BCS) on the Solar Maximum Mission (operational 1980–1989). The abundances are derived from the ratio
B. Sylwester +3 more
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Poland’s Regional Policy and Disparities in the Polish Space
Studia Regionalne i Lokalne, 2006 The paper discusses regional disparities in Poland in their many dimensions and aspects economic, social and political. Individual phenomena basically have a similar spatial representation, which can be seen as a corroboration of the well-known thesis on
Grzegorz Gorzelak
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Statistical Analysis of Compact Single-source Flares Observed by STIX
The Astrophysical JournalX-ray emissions from solar flares provide a comprehensive overview of the spatial and spectral behaviors of high-temperature plasma in the solar atmosphere.
Michalina Litwicka +6 more
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Simulations of a kinetic plasma instability in streamers of transient luminous events
Archives of MechanicsWe have supplemented the Particle-In-Cell code SMILEI with the module for collisions between charged and neutral particles. The code has been evaluated and used for the examination of the nonlinear stability and dynamics of plasma in conditions of ...
P. Jujeczko, J. Błęcki, K.A. Mizerski
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Polish Migrants in Urban Space of Dublin [PDF]
Bulletin of Geography. Socio-economic Series, 2011 The end of Cold War in the late 1980s of the 20 th century and the accession to EU in 2004 brought spectacular changes in Polish migrations during the last 20 years. The opening of borders in 1989 and labour markets for Poles in 2004 caused fundamental changes in the scale, intensity and directions of Polish migrations.
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