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150 995 (0,304s)

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General covariant derivatives for general connections

In this paper we introduce the general covariant derivatives of vertical-valued tensor fields with respect to a general connection on a fibered manifold and a classical connection on the base. We prove that the general<...

BA - Obecná matematika

  • 2011
  • Jx
  • Link
Result

Transformation of spatial and perturbation derivatives of travel time at a general interface between two general media

We consider the partial derivatives of travel time with respect to both spatial coordinates and perturbation parameters. We derive the explicit equations for transforming these travel-time derivatives of arbitrary orders at...

DC - Seismologie, vulkanologie a struktura Země

  • 2010
  • O
Result

Generalized directional derivatives

The book is devoted to generalized second-order directioanal derivatives and to the class of functions for which the lower Dini derivative is Lipschitz. The optimality conditions for the problems without constraints were st...

BA - Obecná matematika

  • 2010
  • B
Result

Convexity and generalized second-order derivatives for locally lipschitz functions

We define the generalized second-order directional derivatives by means of the Clarke generalized gradient for locally Lipschitz functions. Then we give characterization of convexity and state a new sufficient optimality co...

BA - Obecná matematika

  • 2005
  • Jx
Result

Combined Leftmost Derivations in Matrix Grammars

It is an open problem, whether matrix grammars with erasing productions using leftmost derivation of type three generate the whole family of recursively using leftmost derivation of type one and all other matrices usin...

JC - Počítačový hardware a software

  • 2004
  • D
Result

Reduction theorem for general connections

We prove the (first) reduction theorem for general and classical connections, i.e. we prove that any natural operator of a general connection on a fibered manifold and a classical connection on the base manifold can be expressed as ...

BA - Obecná matematika

  • 2011
  • Jx
  • Link
Result

Explicit formulas for generators of triangular norms

The paper shows a direct correspondence between the first partial derivatives of a continuous Archimedean triangular norm and the first derivatives of its additive generator. An explicit formula for the additive generat...

BA - Obecná matematika

  • 2010
  • Jx
Result

Homotopy derivations

by adding a generator with "derivation relations". For a wide class of Koszul operads , in particular and , we describe the strong homotopy derivations by coderivations and show. We give examples of strong homotopy der...

BA - Obecná matematika

  • 2016
  • Jx
  • Link
Result

On Lipschitz behaviour of some generalized derivatives

The aim of present paper is to compare various forms of stable property at some point. By stable property we mean the Lipschitz property of some generalized derivatives related only to the reference point. Namely we compare Lipschit...

BA - Obecná matematika

  • 2013
  • Jx
  • Link
Result

Derived, coderived, and contraderived categories of locally presentable abelian categories

of projective objects. We also show that the derived category D(B) is generated, as a triangulated category with coproducts, by the projective generator of B. For a GrothendieckFor a locally presentable abelian category B ...

Pure mathematics

  • 2022
  • Jimp
  • Link
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