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40.657  Articles
1 of 4.067 pages  |  10  records  |  more records»
In this paper, we give some characterizations of the left and right generalized Drazin invertible bounded operators in Banach spaces by means of the single-valued extension property (SVEP). In particular, we show that a bounded operator is left (resp. rig... see more

Dependence of the enthalpy of formation of acyclic saturated ketones on molecular structure (the number of carbon atoms, the position of the carbonyl group, and branching of molecules) was investigated. For this purpose, a simple computational model, whos... see more

The spectral theory of the normalized Laplacian for chemical hypergraphs is further investigated. The signless normalized Laplacian is introduced and it is shown that its spectrum for classical hypergraphs coincides with the spectrum of the normalized Lap... see more

DOI: 10.1590/2179-8966/2020/48792ResumoO objetivo deste artigo reside em investigar de que maneira algumas reflexões suscitadas por Gayatri Chakravorty Spivak em seu artigo, Can the subaltern speak?, podem ser relevantes para uma reconsideração crítica da... see more

Relaxation of the electron energy and momentum densities is investigated in spatially uniform states of completely ionized plasma in the presence of small constant and spatially homogeneous external electric field. The plasma is considered in a generalize... see more

ABSTRACT Context. In the queueing theory, the studies of G/G/1 systems are relevant because it is impossible to obtain solutions for the waiting time in the final form in the general case with arbitrary laws of distributions of the input flow and of the s... see more

4G is now deployed all over the world, but requirements are about to change rapidly face to the exponential growth on devices number, local service applications and spectrum scarce. To deal with that, 5G networks integrated Device To Device (D2D) communic... see more

This paper develops a systematic method for calculating approximate prices for a wide range of securities implying the tools of spectral analysis, singular and regular perturbation theory. Price options depend on stochastic volatility, which may be multis... see more

This paper introduces a new approach to remote sensing that combines spectral and polarimetric features of signals received from distant objects, providing spectral analysis of polarimetric variables. The detailed theory has been developed for the case of... see more

1 of 4.067 pages  |  10  records  |  more records»