Formal group. In mathematics, a formal group law is (roughly speaking) a formal power series behaving as if it were the product of a Lie group. They were introduced by S. Bochner (1946). The term formal group sometimes means the same as formal group law, and sometimes means one of several generalizations.
While you can choose to earn a bachelor's degree to become a sonographer, the most common path is earning an associate degree, and it's one of the better-paying opportunities with a degree at that education level.here are a number of different ways someone can become a sonographer: 1  Certification programs for people already trained in a medical profession, such as a radiology technician; which typically take about one year to complete. 2  Associate degree programs, which typically take two years.
Through the American Registry for Diagnostic Medical Sonography (ARDMS), sonographers can also pursue certification, such as the registered diagnostic medical sonographer (RDMS), registered diagnostic cardiac sonographer (RDCS), registered vascular technologist (RVT) or registered in musculoskeletal (RMSK).ow to Become a Diagnostic Medical Sonographer. Learn how to become a diagnostic medical sonographer. Research the job description, education and licensing requirements to find out how to start a career in medical sonography.