Results 231 to 240 of about 22,165 (265)
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AFFINE STRUCTURES ON NILMANIFOLDS
International Journal of Mathematics, 1996We investigate the existence of affine structures on nilmanifolds Γ\G in the case where the Lie algebra g of the Lie group G is filiform nilpotent of dimension less or equal to 11. Here we obtain examples of nilmanifolds without any affine structure in dimensions 10, 11. These are new counterexamples to the Milnor conjecture.
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SOLVABLE AFFINE TERM STRUCTURE MODELS
Mathematical Finance, 2007AnAffine Term Structure Model(ATSM) is said to be solvable if the pricing problem has an explicit solution, i.e., the corresponding Riccati ordinary differential equations have a regular globally integrable flow. We identify the parametric restrictions which are necessary and sufficient for an ATSM with continuous paths, to be solvable in a state space,
M. Grasselli, TEBALDI, CLAUDIO
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Structures of the Affine Families of Switching Functions
IEEE Transactions on Computers, 1969The equivalence relation that partitions switching functions into affine families leads to a natural graphic representation of the families. From the graphs, it is possible to derive information on the self-symmetries of switching functions and the relative symmetries of functions that are in the same family.
Harold S. Stone, Charles L. Jackson
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On Affine Hypersurfaces with an Almost Symplectic Structure
Results in Mathematics, 2015The author studies affine hypersurfaces which also admit a symplectic form \(\omega\) and for which the tensor \(J_{\omega}\) is related to the second fundamental form by \(\omega(X,J_{\omega}Y)=h(X,Y)\). He then investigates when the structure \(J_\omega\) is parallel with respect to the induced connection, thus generalising previous results of Kon ...
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Affine Near-Rings and Related Structures
Mathematical Notes, 2018zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Howell, K.-T., Chistyakov, D. S.
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Incidence structures of affine and protective types
Journal of Geometry, 1985The authors give a combinatorial characterization of the incidence structures whose points and blocks are the h- and \((h+1)\)-dimensional affine and projective spaces \(A_{h,h+1}({\mathbb{A}})\), \(P_{h,h+1}({\mathbb{P}})\), respectively. They define the concepts of affine and projective G-spaces, examples of which are the above mentioned incidence ...
Biondi, Paola, Melone, Nicola
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Journal of Geometry, 1980
W.Leissner has characterized, by geometric axioms, the affine Barbilian planes over a Z-ring (i.e, a ring with 1 such that ab=1 ⇒ ba=1) [10].The aim of the present paper is to characterize correspondingly the affine Barbilian planes over an arbitrary ring with 1.
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W.Leissner has characterized, by geometric axioms, the affine Barbilian planes over a Z-ring (i.e, a ring with 1 such that ab=1 ⇒ ba=1) [10].The aim of the present paper is to characterize correspondingly the affine Barbilian planes over an arbitrary ring with 1.
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Structure theory of state-affine systems
Journal of the Franklin Institute, 1977Abstract In this paper the structure theory of the state space is developed for a class of state-affine systems. On the basis of the properties of reachability and indistinguishability with respect to a given state, the state space decomposition is operated and the input–output behaviour is characterized.
Gori Giorgi C., MONACO, Salvatore
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Simplified affine phase structures
Reports Math. Log., 1998Summary: Phase models for affine linear logic were independently devised by \textit{Y. Lafont} [J. Symb. Log. 62, No. 4, 1202-1208 (1997; Zbl 0897.03010)] and \textit{M. Piazza} [``Phase semantics for linear affine logic'', typescript], although foreshadowed by \textit{H. Ono} [``Semantics for substructural logics'', in: P.
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On the Structure and Affinities of the Hippuritidæ
Quarterly Journal of the Geological Society of LondonAbstract T hese fossils were regarded by the author as bivale shells, forming a distinct family, related most nearly to the Chamidæ and the Cardiadæ. The Hippurite was shown to have its valves articulated by a hinge essentially like that of the ...
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