Khalid Amin – författare

Targeted at undergraduate mathematics students, this book aims to cover courses in group theory. Based on lectures in group theory, it includes many illustrations and examples, numerous solved exercises and detailed proofs of theorems. The book acts as a guide to teachers and is also useful to graduate students. The book discusses major topics in group theory such as groups and subgroups, binary operations, fundamental algebraic structure of groups, symmetric groups, cyclic groups, normal subgroups, quotient groups, homomorphisms, isomorphisms, direct product of groups, simple groups, set on a group, Sylow's theorem, finite group, Abelian groups and non-isomorphic Abelian groups.

"There are several human and kind reasons why someone might break into your apartment; theft, murder, and other human interactions that we all need from time to time. But for someone to break into your apartment and restrain you in your seat to force you to listen to their story? That''s a little unusual. One night, Salah broke into Nardine El-Sabbagh''s apartment and tied her up on her couch, forcing her to listen to his story. He''s threatening her with a knife, and he seems on the brink of madness, but he''s afraid, afraid of something as he narrates his crazy story to Nardine. What drove an experienced investigator like Salah to the brink of madness? What did he see on his journey searching for a missing teenage girl that drove him to lose his mind? And what is the connection between the massacre at the Alexandria building and what is happening? And what makes a mother kill her baby in a hospital while babbling that ''the thing is coming''? Well, as I told you, there are several reasons why someone might break into your apartment at night, but there is only one reason that answers the previous questions."

Still trying and hoping to survive is not over. A mysterious man decides to tackle this human beast, who is setting up a special team to hunt down and reveal Jado, a team of special skills that distinguish them from other human beings. We start an exciting and mysterious adventure with them to reveal these terrifying questions.

Imagine with me that you and your wife are on your way home at night but your car breaks down, you try to find help and find another car whose owner offers to help you, after this timer kills your wife, you see who killed her? And will he find our hero killer?

On a dark night, the police station gets a call to investigate a crime. The accused alleges that her husband''s spouse appeared in their apartment several times and the spouse may have been the perpetrator. Her claims are dealt with with with a degree of seriousness and irony, but the lady insists on the appearance of the consort once and for all. While tracking the details of the case, many circumstances can be discovered about that lady and the mysterious secret behind the crime that took place.

On New Year''s Eve, a mysterious crime occurs. A crime without a real defendant, and a complete massacre in a house with a closed room with a secret that no one knows, and who survives the details of that night is one person, but he''s amnesic!