PhysicalismIn philosophy, physicalism is the metaphysical thesis that "everything is physical", that there is "nothing over and above" the physical, or that everything supervenes on the physical. Physicalism is a form of ontological monism—a "one substance" view of the nature of reality as opposed to a "two-substance" (dualism) or "many-substance" (pluralism) view. Both the definition of "physical" and the meaning of physicalism have been debated.
Separation of variablesIn mathematics, separation of variables (also known as the Fourier method) is any of several methods for solving ordinary and partial differential equations, in which algebra allows one to rewrite an equation so that each of two variables occurs on a different side of the equation. A differential equation for the unknown will be separable if it can be written in the form where and are given functions. This is perhaps more transparent when written using as: So now as long as h(y) ≠ 0, we can rearrange terms to obtain: where the two variables x and y have been separated.
Cubic functionIn mathematics, a cubic function is a function of the form that is, a polynomial function of degree three. In many texts, the coefficients a, b, c, and d are supposed to be real numbers, and the function is considered as a real function that maps real numbers to real numbers or as a complex function that maps complex numbers to complex numbers. In other cases, the coefficients may be complex numbers, and the function is a complex function that has the set of the complex numbers as its codomain, even when the domain is restricted to the real numbers.
Record linkageRecord linkage (also known as data matching, data linkage, entity resolution, and many other terms) is the task of finding records in a data set that refer to the same entity across different data sources (e.g., data files, books, websites, and databases). Record linkage is necessary when joining different data sets based on entities that may or may not share a common identifier (e.g., database key, URI, National identification number), which may be due to differences in record shape, storage location, or curator style or preference.
Free variables and bound variablesIn mathematics, and in other disciplines involving formal languages, including mathematical logic and computer science, a variable may be said to be either free or bound. The terms are opposites. A free variable is a notation (symbol) that specifies places in an expression where substitution may take place and is not a parameter of this or any container expression. Some older books use the terms real variable and apparent variable for free variable and bound variable, respectively.
CopenhagenCopenhagen (ˌkoʊpənˈheɪɡən,-ˈhɑː- or ˈkoʊpənheɪɡən,-hɑː- ; København khøpm̩ˈhɑwˀn) is the capital and most populous city of Denmark, with a population of around 1.4 million in the urban area, and more than 2 million in the wider Copenhagen metropolitan area. The city is on the islands of Zealand and Amager, separated from Malmö, Sweden, by the Øresund strait. The Øresund Bridge connects the two cities by rail and road.
History of Denmarksidebar |name = History of Denmark |bodyclass = vcard |title = |contentstyle = text-align:left; border-bottom:#aaa 1px solid; |content1 = Prehistoric Denmark Kongemose culture Ertebølle culture Funnelbeaker culture Corded Ware culture Nordic Bronze Age Pre-Roman Iron Age Roman Iron Age Germanic Iron Age Viking Age House of Sigfred House of Olaf House of Knýtlinga Reunification Christianization North Sea Empire House of Fairhair Medieval Times Estridsen era Reign of Sweyn II and his sons Civil War era Danish
Department for TransportThe Department for Transport (DfT) is a department of His Majesty's Government responsible for the English transport network and a limited number of transport matters in Scotland, Wales, and Northern Ireland that have not been devolved. The department is run by the Secretary of State for Transport, currently (since 25 October 2022), Mark Harper. The expenditure, administration, and policy of the Department of Transport are scrutinised by the Transport Committee.
Variety (universal algebra)In universal algebra, a variety of algebras or equational class is the class of all algebraic structures of a given signature satisfying a given set of identities. For example, the groups form a variety of algebras, as do the abelian groups, the rings, the monoids etc. According to Birkhoff's theorem, a class of algebraic structures of the same signature is a variety if and only if it is closed under the taking of homomorphic images, subalgebras, and (direct) products.
Copenhagen AirportCopenhagen Airport, Kastrup (Københavns Lufthavn, Kastrup, khøpm̩ˈhɑwns ˈlɔftˌhɑwˀn ˈkhæˌstʁɔp; ) is an international airport serving Copenhagen, Denmark, Zealand, the Øresund Region, and southern Sweden including Scania. It is the largest airport in the Nordic countries. As of 2019, the airport was the largest airport in the Nordic countries with close to 30.3 million passengers. It is one of the oldest international airports in Europe, the fourth-busiest airport in Northern Europe, and the busiest for international travel in Scandinavia.
