Tzvetelina Gueorgieva1, Maria Dencheva2, Julia Kamenoff3, Vasil Kalchinov1, Margarita Vasileva4 1) Department of Conservative dentistry, Faculty of Dental Medicine, 2) Department of Imaging and oral diagnosis, Faculty of Dental Medicine, 3) Department of Prosthetic dental medicine, Faculty of Dental Medicine, 4) Student in Faculty of Dental Medicine, Medical University Sofia, Bulgaria Journal o...

Tanguy Harma’s monograph entitled The Paradox of Thanatos: Jack Kerouac and Allen Ginsberg: From Self-Destruction to Self-Liberation, with its fascinating cover illustration by Vasil Stanev, “2 Sugar Skulls,” presents an in-depth study the Beat writers Ginsberg as inheritors European Existentialist American Transcendentalist tradition. It elaborates these two writers’ struggle achieve meaningfu...

In 2018, the first group of teachers and students from Vasil Levski National University conducted experiments on laser marking in Rezekne Academy Of Technology, Latvia. Since then, joint research has been increasing every year better results have achieved not only field technologies, but also other areas interest. A pilot study is even being formed a master's program technology. As result, inte...

vasil'ev posed problem 16.26 in [the kourovka notebook: unsolved problems in group theory, 16th ed.,sobolev inst. math., novosibirsk (2006).] as follows:does there exist a positive integer $k$ such that there are no $k$ pairwise nonisomorphicnonabelian finite simple groups with the same graphs of primes? conjecture: $k = 5$.in [zvezdina, on nonabelian simple groups having the same prime gr...