Safe obstetric anaesthesia?just an ideal?

The Presentation of an Ideal Safe SMS based model in mobile Electronic commerce using Encryption hybrid algorithms AES and ECC

Mobile commerce is whatever electronic transfer or transaction via a mobile modem through a mobile net in which the true value or advance payment is done for goods, services or information. A mobile payment system should be beneficial for all related persons. For a payment system to be a Successful system, End-user, seller, exporter and operators should see a additional value in it. End-user ...

Biprojectivty of Banach algebras modulo an ideal

In this paper, we introduce the new concept of biprojectivity of a Banach algebra modulo an ideal, as a generalization of this notion in the classical case. By using it , we obtain some necessary and sufficient conditions for contractibility of Banach algebras modulo an ideal. In particular we characterize the contractibility of quotient Banach algebras. Also we study the relationship between t...

Coherence in amalgamated algebra along an ideal

Let $f: Arightarrow B$ be a ring homomorphism and let $J$ be an ideal of $B$. In this paper, we investigate the transfer of the property of coherence to the amalgamation $Abowtie^{f}J$. We provide necessary and sufficient conditions for $Abowtie^{f}J$ to be a coherent ring.

An obstetric story.

An Obstetric Cot