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Wyszukujesz frazę "foliation" wg kryterium: Temat


Tytuł:
On the first secondary invariant of Molinos central sheaf
Autorzy:
Álvarez López, Jesús
Powiązania:
https://bibliotekanauki.pl/articles/1310941.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
foliation
taut
Opis:
For a Riemannian foliation on a closed manifold, the first secondary invariant of Molino's central sheaf is an obstruction to tautness. Another obstruction is the class defined by the basic component of the mean curvature with respect to some metric. Both obstructions are proved to be the same up to a constant, and other geometric properties are also proved to be equivalent to tautness.
Źródło:
Annales Polonici Mathematici; 1996, 64, 3; 253-265
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A type of non-equivalent pseudogroups. Application to foliations
Autorzy:
Alvarez López, Jesús
Powiązania:
https://bibliotekanauki.pl/articles/1312196.pdf
Data publikacji:
1992
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
pseudogroup
foliation
holonomy
Opis:
A topological result for non-Hausdorff spaces is proved and used to obtain a non-equivalence theorem for pseudogroups of local transformations. This theorem is applied to the holonomy pseudogroup of foliations.
Źródło:
Annales Polonici Mathematici; 1991-1992, 56, 2; 187-194
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The graph of a totally geodesic foliation
Autorzy:
Wolak, Robert
Powiązania:
https://bibliotekanauki.pl/articles/1311639.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
foliation
totally geodesic
graph
Opis:
We study the properties of the graph of a totally geodesic foliation. We limit our considerations to basic properties of the graph, and from them we derive several interesting corollaries on the structure of leaves.
Źródło:
Annales Polonici Mathematici; 1994-1995, 60, 3; 241-247
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The *-holonomy group of the Stefan suspension of a diffeomorphism
Autorzy:
Piątkowski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1311817.pdf
Data publikacji:
1993
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Stefan foliation
suspension
holonomy group
Opis:
The definition of a Stefan suspension of a diffeomorphism is given. If $_g$ is the Stefan suspension of the diffeomorphism g over a Stefan foliation , and G₀ ∈ satisfies the condition $g|G₀ = id_{G₀}$, then we compute the *-holonomy group for the leaf $F₀ ∈ _g$ determined by G₀. A representative element of the *-holonomy along the standard imbedding of S¹ into F₀ is characterized. A corollary for the case when G₀ contains only one point is derived.
Źródło:
Annales Polonici Mathematici; 1993, 58, 2; 123-129
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On extendability of invariant distributions
Autorzy:
Ziemian, Bogdan
Powiązania:
https://bibliotekanauki.pl/articles/1207929.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Hausdorff partition
foliation
invariant distribution
Opis:
In this paper sufficient conditions are given in order that every distribution invariant under a Lie group extend from the set of orbits of maximal dimension to the whole of the space. It is shown that these conditions are satisfied for the n-point action of the pure Lorentz group and for a standard action of the Lorentz group of arbitrary signature.
Źródło:
Annales Polonici Mathematici; 2000, 74, 1; 13-25
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the perfectness of C∞ s-diffeomorphism groups on a foliated manifold
Autorzy:
Lech, J.
Powiązania:
https://bibliotekanauki.pl/articles/255053.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
group of C∞-diffeomorphisms
perfectness
commutator
foliation
Opis:
The notion of Cr,s and C∞,s-diffeomorphisms is introduced. It is shown that the identity component of the group of leaf preserving C∞,s-diffeomorphisms with compact supports is perfect. This result is a modification of the Mather and Epstein perfectness theorem.
Źródło:
Opuscula Mathematica; 2008, 28, 3; 313-324
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A finiteness theorem for Riemannian submersions
Autorzy:
Walczak, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/1312004.pdf
Data publikacji:
1992
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Riemannian foliation
Riemannian submersion
geometry bounds
finiteness
Opis:
Given some geometric bounds for the base space and the fibres, there is a finite number of conjugacy classes of Riemannian submersions between compact Riemannian manifolds.
Źródło:
Annales Polonici Mathematici; 1992, 57, 3; 283-290
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A note on generalized flag structures
Autorzy:
Rybicki, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1294378.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
generalized foliation
subfoliation
flag structure
distinguished chart
Opis:
Generalized flag structures occur naturally in modern geometry. By extending Stefan's well-known statement on generalized foliations we show that such structures admit distinguished charts. Several examples are included.
Źródło:
Annales Polonici Mathematici; 1998, 69, 1; 89-97
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some framed \(f\)-structures on transversally Finsler foliations
Autorzy:
Ida, Cristian
Powiązania:
https://bibliotekanauki.pl/articles/747021.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Transversally Finsler foliation
Liouville distribution
framed f-structures
Opis:
Some problems concerning to Liouville distribution and framed \(f\)-structures are studied on the normal bundle of the lifted Finsler foliation to its normal bundle. It is shown that the Liouville distribution of transversally Finsler foliations is an integrable one and some natural framed \(f(3,\varepsilon)\)-structures of corank 2 exist on the normal bundle of the lifted Finsler foliation.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica; 2011, 65, 1
0365-1029
2083-7402
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Lie algebras of vector fields related to Riemannian foliations
Autorzy:
Rybicki, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1311816.pdf
Data publikacji:
1993
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Riemannian foliation
Lie algebra
ideal
isomorphism
vector field
generalized manifold
stratification
Opis:
Riemannian foliations constitute an important type of foliated structures. In this note we prove two theorems connecting the algebraic structure of Lie algebras of foliated vector fields with the smooth structure of a Riemannian foliation.
Źródło:
Annales Polonici Mathematici; 1993, 58, 2; 111-122
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphostructural zones of the Myrdalsjokull ice cap and its main outlet glacier the Hofdabrekkujokull, Iceland
Autorzy:
Olszewski, A.
Weckwerth, P.
Powiązania:
https://bibliotekanauki.pl/articles/294791.pdf
Data publikacji:
1999
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
Iceland
ice cap
outlet glacier
morphostructural zones
foliation
types of fissures
Opis:
The problem of the morphostructures of glaciers is directly associated, certainly as far as its condition and origin is concerned, with topographical, geomorphological and geological rock foundations, surrounding those at the bedrock of glaciers and also, in case of valley and outflow glaciers, with those of the valley slopes. differentiation of the bedrock of the Myrdalsjokull ice cap leads to a classification of its three morphostructural zones: the glaciomorphological centre (A) which has only slightly varied relief (a,- a4), a northern homogeneous macro-cone of radial flow (B), and a bipartite, supramarginal surrounding slope (C), which has a significant development of outflow glaciers. This differentiation of the subglacial relief and the rocky surrounding of the Hofdabrekkujokull, are manifested in the distribution of various types of foliation and fissuring on its subaerial surface. These, together with its hypsometric formation, were the basis for distinguishing four morphostructural zones of this glacier (Ht - H4). The distinctive morphostructural features of the sector of the bottom zone (H4) of the glacier determine the areas of its particular activity; this reflects the lithogenetic and morphogenetic nature of the subglacial bedrock. The deformed deposits of the bedrock and the nearest forefield represent an important dynamic effect of the glacial system.
Źródło:
Landform Analysis; 1999, 2; 51-62
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deformation structures in the gneissic exotic pebbles from the area of Wołosate (Cisna sandstone, Dukla tectonic unit, Outer Carpathians, Poland)
Autorzy:
Kania, M.
Wolska, A.
Powiązania:
https://bibliotekanauki.pl/articles/191383.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
gneissic exotic pebbles
foliation
metamorphism
mica fish
Bieszczady Mts.
Outer Carpathians
Polska
Opis:
Gneissic exotic pebbles from the Cisna beds (Dukla tectonic unit) in the region of Wołosate (Biesz- czady Mts., Eastern Carpathians) were investigated. These exotic pebbles are from 9.5 to 13 cm in size. Basing on the structural features, the following groups of exotic pebbles were distinguished: granitic gneisses, laminated gneisses, flaser gneisses and mylonitic gneisses. Granite - granodiorite protolith was deformed in the shear zone; strain partitioning was probably an important process during deformation. The observed structures allow to determine the temperature of metamorphism as 500-550°C. The lower limit of pressure was determined basing on phengite geobarometer as 5 kbar. The nature and localization of the source area can be similar to the Bretila sequence from the Romanian Eastern Carpathians.
Źródło:
Annales Societatis Geologorum Poloniae; 2009, 79, No 2; 41-52
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deformation structures in the gneissic exotic pebbles from the area of Wołosate (Cisna sandstone, Dukla tectonic unit, Outer Carpathians, Poland)
Autorzy:
Kania, M.
Wolska, A.
Powiązania:
https://bibliotekanauki.pl/articles/191901.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
gneissic exotic pebbles
foliation
metamorphism
mica fish
Bieszczady Mts.
Outer Carpathians
Polska
Opis:
Gneissic exotic pebbles from the Cisna beds (Dukla tectonic unit) in the region of Wołosate (Bieszczady Mts., Eastern Carpathians) were investigated. These exotic pebbles are from 9.5 to 13 cm in size. Basing on the structural features, the following groups of exotic pebbles were distinguished: granitic gneisses, laminated gneisses, flaser gneisses and mylonitic gneisses. Granite - granodiorite protolith was deformed in the shear zone; strain partitioning was probably an important process during deformation. The observed structures allow to determine the temperature of metamorphism as 500-550°C. The lower limit of pressure was determined basing on phengite geobarometer as 5 kbar. The nature and localization of the source area can be similar to the Bretila sequence from the Romanian Eastern Carpathians.
Źródło:
Annales Societatis Geologorum Poloniae; 2009, 79, No 1; 41-52
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Module of a geodesic foliation on the flat torus
Autorzy:
Kaźmierczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/122768.pdf
Data publikacji:
2014
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
flat torus
module of a family of submanifolds
foliation
geodesics
foliacja
geodezja
Opis:
We study properties of geodesic foliations on the flat, n-dimensional torus. Using the isomorphism of the Hodge star, we obtain some facts concerning compact totally geodesic surfaces (which are the leaves of geodesic foliations). We compute the p-module of a geodesic foliation. On the basis of these results, we derive a kind of reciprocity formula for the product of modules of two orthogonal foliations. We relate this product with the number of intersections of their leaves. We also obtain a formula for a product of modules of a finite number of geodesic foliations.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2014, 13, 4; 61-72
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł

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