nowadays, sport is known as a great business in trade activities and has brought huge revenues for athletes; sport teams and other sport personalities whereas large part of this revenue emanates from intellectual property rights particularly different kinds of trademarks. regarding fundamental principles and legal approaches of leading systems, this paper attempts to clarify the eminent role of...

Let $G$ be a non-abelian finite group. In this paper, we prove that $Gamma(G)$ is $K_4$-free if and only if $G cong A times P$, where $A$ is an abelian group, $P$ is a $2$-group and $G/Z(G) cong mathbb{ Z}_2 times mathbb{Z}_2$. Also, we show that $Gamma(G)$ is $K_{1,3}$-free if and only if $G cong {mathbb{S}}_3,~D_8$ or $Q_8$.

In a previous work, we introduced particular fuzzy numbers anddiscussed some of their properties. In this paper we use the comparison methodintroduced by Dorohonceanu and Marin[5] to compare between these fuzzynumbers.

Fifty-three years ago, M. M. House devised a classification of patients on the basis of how they behaved in response to the prospect of becoming edentulous and on how they subsequently adapted to wearing complete dentures. Although House's system was an important contribution, it failed to consider the dentist's emotional reaction to a patient's behavior as part of an understanding of how the p...

There is no relief operation similar to another. Nature, number and incentives of stakeholders vary tremendously from one operation to another, and so do the collaboration modes. One thing is always true thought: for each disaster, collaboration networks are implemented on both global and local levels. Yet, lack of collaboration is often underlined as a major weakness of humanitarians. Practiti...

in a previous work, we introduced particular fuzzy numbers anddiscussed some of their properties. in this paper we use the comparison methodintroduced by dorohonceanu and marin[5] to compare between these fuzzynumbers.