Results 81 to 90 of about 3,753,549 (263)
Operator equations and weighted shifts
(The symbolic functional notation will be used in all that follows, regardless of whether or not the elements of H2(w) are actually functions.) The linear operator U may be extended to a closed, densely defined linear transformation U, on H2(w). It is a well known fact (see Halmos [3, p. 491) that lJ, is bounded iff +%+1/%1&0 is a bounded sequence.
openaire +3 more sources
INDEX COMPUTATION OF SOME BISINGULAR OPERATORS WITH SHIFT BY HOMOTOPY METHOD
The work continues to research the insufficiently explored problem of bisingular operators with shift index. It considers new cases of index computation of the bisingular operators with indisintegrative involutive shift by the homotopy method.
S. V. EFIMOV
doaj
INDEX COMPUTATION OF SOME BISINGULAR OPERATORS WITH SHIFT BY HOMOTOPY METHOD
The work continues to research the insufficiently explored problem of bisingular operators with shift index. It considers new cases of index computation of the bisingular operators with indisintegrative involutive shift by the homotopy method.
S. V. EFIMOV
doaj
On the Wigner-Racah Algebra of the Group SU(2) in a Non-Standard Basis
The algebra su(2) is derived from two commuting quon algebras for which the parameter q is a root of unity. This leads to a polar decomposition of the shift operators of the group SU(2).
Kibler, M. R.
core +1 more source
Can varying the number of teams in a shift schedule constitute a preventive strategy?
OBJECTIVE: The study examines the implications for shiftworkers of applying different numbers of teams in the organization of shiftwork. METHODS: The participating operators came from five different companies applying continuous shift rotation systems ...
Hans Jeppe Jeppesen +2 more
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The purpose of this research is to determine the relationship between work shift and subjective fatigue of work at internet cafe operators in Sekaran. Shift work can affect variety of physical and psychological changes in the people including fatigue ...
. Muvarichin
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Nabla derivatives associated with nonlinear control systems on homogeneous time scales
The backward shift and nabla derivative operators, defined by the control system on homogeneous time scale, in vector spaces of one-forms and vector fields are introduced and some of their properties are proven.
Zbigniew Bartosiewicz +5 more
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Rigorous Derivation of the Phase Shift Formula for the Hilbert Space Scattering Operator of a Single Particle [PDF]
T. A. Green, Oscar E. Lanford
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On the Complete Indeterminacy and the Chaoticity of the Generalized Heun Operator in Bargmann Space
In 1998, we gave a complete scattering analysis of the cubic Heun operator H=a∗(a+a∗)a acting on Bargmann space, where a and a∗ are the standard Bose annihilation and creation operators satisfying the commutation relation [a,a∗]=I.
Abdelkader Intissar
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Discomfort Analysis in Computerized Numeric Control Machine Operations
Objectives: The introduction of computerized numeric control (CNC) technology in manufacturing industries has revolutionized the production process, but there are some health and safety problems associated with these machines.
Krishnamoorthy Muthukumar +2 more
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