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.
An associate or bachelor's degree is typically required to pursue employment as a diagnostic medical sonographer. Students also have the option to graduate with a degree in a related field, pursue a certificate program in diagnostic medical sonography and then receive on-the-job training.nly a few states require sonographers to be licensed. While state requirements can vary, a professional certification from a national credentialing organization is often required to become licensed.