It is well known that the Gauss map for a complex plane curve birational, whereas in positive characteristic not always birational. Let $q$ be power of prime integer. We study certain degree $q^2 + q 1$ which inseparable with $q$. As special case, we show relation between dual Fermat and Ballico-Hefez curve.

background: logistic discriminant method was applied to differentiate malignant from benign in a group of patients with proved breast lesions on the basis of ultrasonic parameters. materials and methods: our database include 273 patients' ultrasonographic pictures consisting of 14 quantitative variables. the measured variables were ultrasound propagation velocity, acoustic impedence and at...

OBJECTIVE To examine the reliability and validity of the self-report Korean version of Strengths and Difficulties Questionnaire (SDQ-Kr) in the community sample. METHODS The SDQ-Kr was administered to a large sample of school children and adolescents (n=2814) and youth attendees of a psychiatric clinic (n=385) aged 11-16 years. To examine temporal stability, the same questionnaire was adminis...