نتایج جستجو برای: compact form

تعداد نتایج: 775138  

2002
Elmar Vogt

Let F be a foliation of codimension 2 on a compact manifold with at least one non-compact leaf. We show that then F must contain uncountably many non-compact leaves. We prove the same statement for oriented p-dimensional foliations of arbitrary codimension if there exists a closed p form which evaluates positively on every compact leaf. For foliations of codimension 1 on compact manifolds it is...

2014
E. Sorokin D. Klimentov M. P. Frolov Yu. V. Korostelin V. I. Kozlovsky Yu. P. Podmar’kov Ya. K. Skasyrsky I. T. Sorokina

We report spectroscopic characteristics and laser properties of the mid-infrared active laser medium Cr2+:CdS. Temperature-dependent absorption, luminescence and lifetime measurements of the 5E exited state allow determination of peak emission cross section value of 1.35 × 10-18 cm2 in σ-polarization at room temperature. Lifetime values vary from 7.6 µs at 8 K to 0.48 µs at 320 K, corresponding...

1996
Yibin Ye Kaushik Roy

|A new graph-based synthesis method for general Exclusive Sum-of-Product forms (ESOP) is presented in this paper. Previous research has largely concentrated on a class of ESOP's, the Canonical Restricted Fixed/Mixed Polarity Reed-Muller form, also known as Generalized Reed-Muller (GRM) form. However, for many functions, the minimum GRM can be much worse than the ESOP. We have de ned a Shared Mu...

2013
Joseph A. Wolf JOSEPH A. WOLF

We extend the classical Uncertainty Principle to the context of Gelfand pairs. The Gelfand pair setting includes riemannian symmetric spaces, compact topological groups, and locally compact abelian groups. If the locally compact abelian group is Rn we recover a sharp form of the classical Heisenberg uncertainty principle. Section

Journal: :Journal of oral rehabilitation 1976
R A Fuys R G Craig K Asger

The physical and mechanical properties of samples of a nickel-base alloy fabricated by powder metallurgy were determined. The particle sizes of the powders used to make the samples varied from -80/ +200 mesh to -325 mesh. The compaction pressure varied from 138 to 414 MN/m2 and the sintering temperature varied from 1150 to 1250 degrees C. The shrinkage during processing, the porosity, tensile s...

2000
Robert L. Wernli

Technology is changing the future for the U.S. Navy, and Ocean Engineering will play a major role. In the past, navy research concentrated on platforms such as surface ships and submarines, but the future will be driven by communications between bases and platforms whether on shore, afloat, submerged or in the air. Immediate access to tactical information will be critical for successful mission...

Journal: :Journal of biomedical materials research. Part B, Applied biomaterials 2008
Mustafa Güden Emrah Celik Alpay Hizal Mustafa Altindiş Sinan Cetiner

Sintered Ti6Al4V powder compacts potentially to be used in implant applications were prepared using commercially available spherical and angular powders (100-200 mum) within the porosity range of 34-54%. Cylindrical green powder compacts were cold compacted at various pressures and then sintered at 1200 degrees C for 2 h. The final percent porosity and mean pore sizes were determined as functio...

2010
Álvaro Pelayo Tudor S. Ratiu

We prove that when Hodge theory survives on non-compact symplectic manifolds, a compact symplectic Lie group action having fixed points is necessarily Hamiltonian, provided the associated almost complex structure preserves the space of harmonic one-forms. For example, this is the case for complete Kähler manifolds for which the symplectic form has an appropriate decay at infinity. This extends ...

In this paper, countable compactness and the Lindel¨of propertyare defined for L-fuzzy sets, where L is a complete de Morgan algebra. Theydon’t rely on the structure of the basis lattice L and no distributivity is requiredin L. A fuzzy compact L-set is countably compact and has the Lindel¨ofproperty. An L-set having the Lindel¨of property is countably compact if andonly if it is fuzzy compact. ...

2008
TEODOR BANICA

We construct inclusions of the form (B0 ⊗ P ) G ⊂ (B1 ⊗ P ) , where G is a compact quantum group of Kac type acting on an inclusion of finite dimensional C-algebras B0 ⊂ B1 and on a II1 factor P . Under suitable assumptions on the actions of G, this is a subfactor, whose Jones tower and standard invariant can be computed by using techniques of A. Wassermann. The subfactors associated to subgrou...

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