History of the family History of the family The history of the family is a branch of social history that concerns the sociocultural evolution of kinship groups from prehistoric to modern times. The family has a universal and basic role in all societies. Research on the history of the family crosses disciplines and cultures, aiming to understand the structure and function of the family from many viewpoints. For example, sociological, ecological or economical perspectives are used to view the interrelationships between the individual, their relatives, and the historical time. The study of family history has shown that family systems are flexible, culturally diverse and
Eureka (word) Fermat polygonal number theorem. Eureka (word) Eureka () is an interjection used to celebrate a discovery or invention. It is a transliteration of an exclamation attributed to Ancient Greek mathematician and inventor Archimedes. "Eureka" comes from the Ancient Greek word "heúrēka", meaning "I found (it)", which is the first person singular perfect indicative active of the verb "heuriskō" "I find". It is closely related to heuristic, which refers to experience-based techniques for problem solving, learning, and discovery. The accent of the English word is on the second syllable, following Latin rules of accent, which require that a penult (next-to-last syllable)