let a be a unital r-algebra and m be a unital a-bimodule. it is shown that every jordan derivation of the trivial extension of a by m, under some conditions, is the sum of a derivation and an antiderivation.

A new material on the Neotropical genera Lichenomorphus Cadena-Castaсeda, 2011, Dissonulichen Theia Brunner-Wattenwyl, 1891, Hetaira 1891 and Anaulacomera Stål, 1873 (Phaneropterinae) are considered with description of one subgenus, 16 species six subspecies: Euceraicerca subgen. nov. from s. l.; L. dietrichi sp. Panama (Chiriqui Prov.); piraniucayali subsp. Peru (Ucayali Department); D. roseol...

In this paper, we explain the design choices of Panama [8] and RadioGatún [1], which lead to Keccak [3]. After a brief recall of Panama, RadioGatún and the trail backtracking cost, we focus on three important aspects. First, we explain the role of the belt in the light of differential trails. Second, we discuss the relative advantages of a block mode hash function compared to a stream mode one....

The main purpose of the study is to examine the causal relationship between government revenues and expenditures of the Jordan government over the period from 1990 to 2011 using Granger causality and VECM tests methodology. Which provides channels of causation between government revenues (GR) and government expenditures (GE).The empirical results show that bidirectional causality running betwee...

There have been 179 species of microcaddisflies (Trichoptera: Hydroptilidae) recorded from the Republic Panama. Herein we describe 6 new Mount Totumas Cloud Forest and biological reserve, in Río Colorado watershed ( Leucotrichia cultrata, Metrichia akidion, M. plax, Ochrotrichia alma, O. paxilla, petersoni ). In addition, 1 under an informal designation report 4 country records for Panama this ...

the main purpose of the study is to examine the causal relationship between government revenues and expenditures of the jordan government over the period from 1990 to 2011 using granger causality and vecm tests methodology. which provides channels of causation between government revenues (gr) and government expenditures (ge).the empirical results show that bidirectional causality running betwee...

the famous primary and cyclic decomposition theorems along with the tightly related rational and jordan canonical forms are extended to linear spaces of infinite dimensions with counterexamples showing the scope of extensions.

In this paper we consider the approximate Jordan maps and boundedness of these maps. Also we investigate the stability of approximate Jordan maps and prove some stability properties for approximate Jordan maps. Keywords—Approximate Jordan map; Stability.

Four new species and one new subspecies of Opilioacaridae are described from Mexico, Cuba, and Panama. The classification of Opilioacaridae is updated with recognition of the genus Neocarus as separate from Opilioacarus, and by recognition of a new genus, Caribeacarus, with three species from the greater Antilles and Panama. A key to the North/ Central American and Caribbean species of Opilioac...