A comprehensive digital encyclopedia presenting factual, historical, and educational articles supported by reliable sources and structured data. Page: 20

In mathematics, the power set (or powerset) of a set S is the set of all subsets of S, including the empty set and S itself. In axiomatic set theory (as developed, for example, in the ZFC axioms), the existence of the power set of any set is postulated by the axiom of power set. The powerset of S is…

The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models based on the Big Bang concept explain a broad range of phenomena, including the abundance of light elements, the cosmic microwave background (…

Ethical consumerism, also known as ethical consumption, ethical purchasing, moral purchasing, ethical sourcing, or ethical shopping, and also associated with sustainable and green consumerism) is a type of consumer activism based on the concept of dollar voting. People engage in ethical consumerism …

Family (from Latin: familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictability, structure, and safety as members mature and learn to participate in th…

The Kermadec Islands (/ˈkɜːrmədɛk/ KUR-mə-dek; Māori: Rangitāhua) are a subtropical island arc in the South Pacific Ocean 800–1,000 km (500–620 mi; 430–540 nmi) northeast of New Zealand's North Island, and a similar distance southwest of Tonga. The islands are part of New Zealand. They are 33.6 km2 …

The Tokugawa shogunate, also known as the Edo shogunate, was the military government of Japan during the Edo period from 1603 to 1868.…

The Carte Vitale is the health insurance card of the national health care system in France. It was introduced in 1998 to allow a direct settlement with the medical arm of the social insurance system. The declaration of a primary health insurance company (Caisse primaire d'assurance maladie) substitu…

The Kansas Cagerz were a United States Basketball League team based in Salina, Kansas beginning in 1999.…

Gnosticism (from Ancient Greek γνωστικός (gnōstikós) 'having knowledge'; Koine Greek: [ɣnostiˈkos]) is a collection of different religious and philosophical ideas and systems that fully developed by the mid-2nd century among sects of early Christianity and other faiths. It is not a singular, homogen…

Etruria (/ɪˈtrʊəriə/ ih-TROOR-ee-ə) was a region of Central Italy delimited by the rivers Arno and Tiber, an area that covered what is now most of Tuscany, northern Lazio, and north-western Umbria. It was inhabited by the Etruscans, an ancient civilization that flourished in the area from around the…