it is shown that every  almost linear bijection $h : arightarrow b$ of a unital $c^*$-algebra $a$ onto a unital$c^*$-algebra $b$ is a $c^*$-algebra isomorphism when $h(3^n u y) = h(3^n u) h(y)$ for allunitaries  $u in a$, all $y in a$, and all $nin mathbb z$, andthat almost linear continuous bijection $h : a rightarrow b$ of aunital $c^*$-algebra $a$ of real rank zero onto a unital$c^*$-algebra...

A new species of the genus Schrankia Hübner, 1825, S. pelicanosp. n. is described from Sichuan, China. A diagnostic comparison is made with Schrankia taenialis (Hübner, [1809]) and Schrankia separatalis (Herz, 1904); illustrations of the male holotype and its genitalia are provided. A checklist of the genus with synonyms is given.

Hamburger Synchrotron-Strahlungslabor, H A S Y M at DESY, Notkestr. 85,22607 Hamburg, Germany * Fachbereich 7 Physik &r Universitat Gesamthochschule Siegen, Adolf-Reichwein-Str. 2 , 57068 Siegen, Germany ** Kardiologische Abteilung der Medizinischen Klinik, Universitats-Krankt.nhaus Eppendoif, Martinistr. 52,20251 Hamburg, Germany *** Herz-Kreislauf-Klinik, Romstedter Str. 25,29549 Bad Bevensen...

in this paper, we introduce the notion of multiplier in -algebra and study relationships between multipliers and some special mappings, likeness closure operators, homomorphisms and ( -derivations in -algebras. we introduce the concept of idempotent multipliers in bl-algebra and weak congruence and obtain an interconnection between idempotent multipliers and weak congruences. also, we introduce...