Results 41 to 50 of about 28,496 (163)
Journal of Functional Analysis, 1988 If Y is a Banach space and a separable Banach space \(X\subset Y\) *, then X is said to be w *-Polish if the closed unit ball of X is Polish in the w *-topology (i.e. homeomorphic to a separable complete metric space). This property of Banach spaces is carefully studied in connection to properties like the point of continuity property, skipped blocking
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Descriptive Complexity on Non-Polish Spaces.
, 2020 Represented spaces are the spaces on which computations can be performed. We investigate the descriptive complexity of sets in represented spaces. We prove that the standard representation of a countably-based space preserves the effective descriptive complexity of sets.
Callard, Antonin, Hoyrup, Mathieu
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Remote Sensing, 2020 The Gravity Recovery and Climate Experiment (GRACE) mission has provided global observations of temporal variations in the gravity field resulting from mass redistribution at the surface and within the Earth for the period 2002–2017.
Justyna Śliwińska +2 more
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThis article presents an automatic procedure for detecting and counting dwellings in refugee/internally displaced persons camps. Very high resolution (VHR) satellite images are used to monitor camps, especially in inaccessible to “in-situ” ...
Malgorzata Jenerowicz-Sanikowska +1 more
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The non-Fourier image reconstruction method for the STIX instrument
Open Astronomy, 2020 In this work we aimed to develop the image reconstruction algorithm without any analytical simplifications and restrictions. In our method we abandon Fourier’s approach to image reconstruction, and instead use the number of counts recorded in each ...
Siarkowski Marek +4 more
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REPRESENTATIONS OF IDEALS IN POLISH GROUPS AND IN BANACH SPACES [PDF]
The Journal of Symbolic Logic, 2015 AbstractWe investigate ideals of the form {A⊆ω: Σn∈Axnis unconditionally convergent} where (xn)n∈ωis a sequence in a Polish group or in a Banach space. If an ideal onωcan be seen in this form for some sequence inX, then we say that it is representable inX.After numerous examples we show the following theorems: (1) An ideal is representable in a Polish ...
Piotr Borodulin-Nadzieja +2 more
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The east-west asymmetry in Coronal Mass Ejections: evidence for active longitudes [PDF]
Annales Geophysicae, 2005 Various manifestations of solar activity are not uniformly distributed with heliographic longitude. By using east-west asymmetry in the occurrence rate of CMEs (coronal mass ejections), the longitudinal dependence in SOHO LASCO 1996-2004 data has
M. Skirgiello
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A Q-WADGE HIERARCHY IN QUASI-POLISH SPACES [PDF]
The Journal of Symbolic Logic, 2020 AbstractThe Wadge hierarchy was originally defined and studied only in the Baire space (and some other zero-dimensional spaces). Here we extend the Wadge hierarchy of Borel sets to arbitrary topological spaces by providing a set-theoretic definition of all its levels.
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Nonreduction of Relations in the Gromov Space to Polish Actions [PDF]
Notre Dame Journal of Formal Logic, 2018 It is shown that, in the Gromov space of isometry classes of pointed proper metric spaces, the equivalence relations defined by existence of coarse quasi-isometries or being at finite Gromov-Hausdorff distance, cannot be reduced to the equivalence relation defined by any Polish action.
Álvarez López, Jesús A. +1 more
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Satellite-based detection of deep-convective clouds: the sensitivity of infrared methods and implications for cloud climatology [PDF]
Atmospheric Measurement TechniquesReliable deep-convective cloud (DCC) climatology relies heavily on accurate detection. Infrared-based algorithms play a critical role, as they are the only ones that can be applied to the 6.7 µm water vapour (WV) absorption band and the 11 µm infrared ...
A. Z. Kotarba, I. Wojciechowska
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