Gemstonesby G. F. H. Smith

Bibliography of George H. Smith

1916 The mechanism of the Abderhalden reaction with bacterial substrates. J. Infect. Dis., 1916, 18, 14-19 (with M. W. Cook). Serum reaction following treatment with sensitized and non-sensitized bacteria. Med. Rec., 1916, 90, 744. The intracutaneous absorption of antigen. J. Immunol., 1916-17, 2, 269-281 (with M. W. Cook). 1917 Cutaneous antibodies in the guinea-pig. J. Immunol., 1917, 2, 415-...

f-DERIVATIONS AND (f; g)-DERIVATIONS OF MV -ALGEBRAS

Recently, the algebraic theory of MV -algebras is intensively studied. In this paper, we extend the concept of derivation of $MV$-algebras and we give someillustrative examples. Moreover, as a generalization of derivations of $MV$ -algebraswe introduce the notion of $f$-derivations and $(f; g)$-derivations of $MV$-algebras.Also, we investigate some properties of them.

Davey Smith , G ; Ebrahim , S ( 2005 )

(2005) What can mendelian randomi-sation tell us about modifiable behavioural and environmental ex-posures? BMJ, 330 (7499).

(f) pinch (g)

F P M G

In group theory, it is a fundamental question to determine what information about a group is necessary and sufficient tomake a group finitely presented. In this paper, we develop the theory of Σ-invariants due to Robert Bieri and Ralph Strebel [Bieri] whi provides an answer to this question for the class of metabelian groups. We begin our study of Σ-invariants with a digression on group extens...