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Boolean-valued

Boolean-valued usually refers to: in most applied fields: something taking one of two values referring to two-element Boolean algebra the Boolean domain, e.g. Boolean-valued function or Boolean data type in mathematics: something taking values ov ...

Canonical cover

A canonical cover F c {\displaystyle F_{c}} for F is a set of dependencies such that F logically implies all dependencies in F c {\displaystyle F_{c}}, and F c {\displaystyle F_{c}} logically implies all dependencies in F. The set F c {\displayst ...

Degeneracy (mathematics)

In mathematics, a degenerate case is a limiting case of a class of objects which appears to be qualitatively different from the rest of the class, and the term degeneracy is the condition of being a degenerate case. The definitions of many classe ...

Dimension

In physics and mathematics, the dimension of a mathematical space is informally defined as the minimum number of coordinates needed to specify any point within it. Thus a line has a dimension of one because only one coordinate is needed to specif ...

Dimensionless quantity

In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned, also known as a bare, pure, or scalar quantity or a quantity of dimension one, with a corresponding unit of measurement in the SI of the u ...

Kallen function

The Kallen function, also known as triangle function, is a polynomial function in three variables, which appears in geometry and particle physics. In the latter field it is usually denoted by the symbol λ {\displaystyle \lambda }. It is named aft ...

Limiting case (mathematics)

In mathematics, a limiting case of a mathematical object is a special case that arises when one or more components of the object take on their most extreme possible values. For example: In statistics, the limiting case of the binomial distributio ...

Line (geometry)

The notion of line or straight line was introduced by ancient mathematicians to represent straight objects with negligible width and depth. Lines are an idealization of such objects. Until the 17th century, lines were defined as The straight line ...

Mathematical diagram

Dynkin diagram Cremona diagram Taylor diagram Stellation diagram Elementary diagram Euler diagram Van Kampen diagram Ulam spiral De Finetti diagram

Olog

The theory of ologs is an attempt to provide a rigorous mathematical framework for knowledge representation, construction of scientific models and data storage using category theory, linguistic and graphical tools. Ologs were introduced in 2010 b ...

Parity (mathematics)

In mathematics, parity is the property of an integers inclusion in one of two categories: even or odd. An integer is even if it is divisible by two and odd if it is not even. For example, 6 is even because there is no remainder when dividing it b ...

Plane (geometry)

In mathematics, a plane is a flat, two-dimensional surface that extends infinitely far. A plane is the two-dimensional analogue of a point, a line and three-dimensional space. Planes can arise as subspaces of some higher-dimensional space, as wit ...

Point (geometry)

In modern mathematics, a point refers usually to an element of some set called a space. More specifically, in Euclidean geometry, a point is a primitive notion upon which the geometry is built, meaning that a point cannot be defined in terms of p ...

Power law of cache misses

A power law is a mathematical relationship between two quantities in which one is directly proportional to some power of the other. The power law for cache misses was first established by C. K. Chow in his 1974 paper, supported by experimental da ...

Santalo's formula

In differential geometry, Santalos formula describes how to integrate a function on the unit sphere bundle of a Riemannian manifold by first integrating along every geodesic separately and then over the space of all geodesics. It is a standard to ...

Sheaf of planes

In mathematics, a sheaf of planes is the set of all planes that have the same common line. It may also be known as a pencil or fan of planes. When extending the concept of line to the line at infinity, a set of parallel planes can be seen as a sh ...

Taylor diagram

Taylor diagrams are mathematical diagrams designed to graphically indicate which of several approximate representations of a system, process, or phenomenon is most realistic. This diagram, invented by Karl E. Taylor in 1994 facilitates the compar ...

Unit angle

A turn is a unit of plane angle measurement equal to 2 π radians, 360 degrees or 400 gradians. A turn is also referred to as a cycle, revolution, complete rotation or full circle. Subdivisions of a turn include half turns, quarter turns, centitur ...

Absolute angular momentum

Angular momentum L equates with the cross product of the position vector r of a particle or fluid parcel and its absolute linear momentum p, equal to m v, the product of mass and velocity. Mathematically, L = r × m v {\displaystyle \mathbf {L} =\ ...

Climate

Climate is the long-term average of weather, typically averaged over a period of 30 years. Some of the meteorological variables that are commonly measured are temperature, humidity, atmospheric pressure, wind, and precipitation. In a broader sens ...

Conditional symmetric instability

Conditional symmetric instability, or CSI, is a form of convective instability in a fluid subject to temperature differences in a uniform rotation frame of reference while it is thermally stable in the vertical and dynamically in the horizontal. ...

Contour advection

Contour advection is a Lagrangian method of simulating the evolution of one or more contours or isolines of a tracer as it is stirred by a moving fluid. Consider a blob of dye injected into a river or stream: to first order it could be modelled b ...

Double mass analysis

Double mass analysis is a commonly used data analysis approach for investigating the behaviour of records made of hydrological or meteorological data at a number of locations. It is used to determine whether there is a need for corrections to the ...

IMETS

Developed by Northrop Grumman, the Integrated Meteorological System is the meteorological component of the Intelligence and Electronic Warfare an element of the Army Battle Command System. IMETS provides Army commanders at all echelons with an au ...

Oasis effect

The oasis effect refers to the creation of a local microclimate that is cooler than the surrounding dry area due to evaporation or evapotranspiration of a water source or plant life and higher albedo of plant life than bare ground. The oasis effe ...

Ocean heat content

The improper expression Oceanic heat content refers to the heat absorbed by the ocean, which is then stored as a form of internal energy or enthalpy. Oceanography and climatology are the science branches which study ocean heat content. Changes in ...

Penman–Monteith equation

Like the Penman equation, the Penman–Monteith equation approximates net evapotranspiration, requiring as input daily mean temperature, wind speed, relative humidity and solar radiation. Other than radiation, these parameter are implicit in the de ...

Q-Vectors

Q-vectors are used in atmospheric dynamics to understand physical processes such as vertical motion and frontogenesis. Q-vectors are not physical quantities that can be measured in the atmosphere but are derived from the quasi-geostrophic equatio ...

Sky

The sky is everything that lies above the surface of the Earth, including the atmosphere and outer space. In the field of astronomy, the sky is also called the celestial sphere. This is an abstract sphere, centred on the earth, on which the Sun, ...

Tetens equation

The Tetens equation is an equation to calculate the saturation vapour pressure of water over liquid and ice. It is named after its creator, O. Tetens who was an early German meteorologist. He published his equation in 1930, and while the publicat ...

Trace (precipitation)

In meteorology, a trace denotes an amount of precipitation, such as rain or snow, that is greater than zero, but is too small to be measured by standard units or methods of measurement. The designation of a trace rather than zero is used to indic ...

Trajectory (fluid mechanics)

In fluid mechanics, meteorology and oceanography, a trajectory traces the motion of a single point, often called a parcel, in the flow. Trajectories are useful for tracking atmospheric contaminants, such as smoke plumes, and as constituents to La ...

Vapor pressure

Vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system. The equilibrium vapor pressure is an indication of a liqu ...

Visibility

In meteorology, visibility is a measure of the distance at which an object or light can be clearly discerned. It is reported within surface weather observations and METAR code either in meters or statute miles, depending upon the country. Visibil ...

88 Precepts

88 Precepts is a credal manifesto containing socio-political, religious and racial maxims by David Eden Lane, a member of the neo-Nazi domestic terrorist organization The Order. Written while Lane was serving a 190-year prison sentence, "88 Prece ...

Autonome Nationalisten

Autonome Nationalisten are German, British, Dutch and to a lesser degree Flemish neo-Nazis, who have adopted some of the far left and Antifas organizational concepts, demonstration tactics, symbolism, and elements of clothing, including Che Gueva ...

Blood in the Face

Blood in the Face is a 1991 documentary film about white supremacy groups in North America. It was directed by Anne Bohlen, Kevin Rafferty and James Ridgeway. It features many interviews with various white supremacist leaders, and archival footag ...

Creativity (religion)

Creativity is a pantheistic, white supremacist religion. The movement rejects Christianity and espouses white nationalism and anti-Semitism. Creativity has been classified as a neo-Nazi hate group by the Southern Poverty Law Center and Anti-Defam ...

Europe a Nation

Europe a Nation was a policy developed by British Fascist politician Oswald Mosley as the cornerstone of his Union Movement. It called for the integration of Europe into a single political entity. Although the idea failed to gain widespread suppo ...

Holocaust denial

Holocaust denial is the act of denying the genocide of Jews in the Holocaust during World War II. Holocaust deniers make one or more of the following false statements: that Nazi Germanys Final Solution was aimed only at deporting Jews from the Re ...

Kalergi plan

The Kalergi Plan, or sometimes called the Coudenhove-Kalergi Conspiracy, is a far-right, anti-semitic, white nationalist conspiracy theory, which states that a plot to mix white Europeans with other races via immigration was constructed by Austri ...

Clark Martell

Clark Reid Martell is an American white supremacist and the former leader of Chicago Area SkinHeads, which was founded in 1987 by six skinheads under his leadership. the first organized neo-Nazi white power skinhead group in the United States. Th ...

Northwest Territorial Imperative

The Northwest Territorial Imperative is a white separatist, neo-Nazi idea that has been popularized since the 1970s–80s by white nationalist, white supremacist and white separatist groups within the United States. According to it, members of thes ...

Phineas Priesthood

The Phineas Priesthood, also called Phineas Priests, are American domestic terrorists who follow the ideology which was set forth in the 1990 book, Vigilantes of Christendom: The Story of the Phineas Priesthood by Richard Kelly Hoskins. The Phine ...

Strasserism

Strasserism is a radical mass action worker-based tendency within Nazism, drawing influence from palingenetic ultranationalism and socialist economics, and espousing economic antisemitism above other antisemitic forms. It derives its name from Gr ...

White genocide conspiracy theory

The white genocide, white extinction, or white replacement conspiracy theory is a white supremacist belief that there is a deliberate plot, often blamed on Jews, to promote miscegenation, mass non-white immigration, racial integration, low fertil ...

White supremacy

White supremacy or white supremacism is the racist belief that white people are superior to people of other races and therefore should be dominant over them. White supremacy has roots in the now-discredited doctrine of scientific racism and often ...

Wotansvolk

Wotansvolk is a form of white nationalist, neo-volkisch modern paganism which was founded in the early 1990s by Ron McVan, Katja Lane and David Lane while Lane was serving a 190-year prison sentence for his actions in connection with the white se ...

Zionist Occupation Government conspiracy theory

Zionist occupation government, Zionist occupational government, or Zionist-occupied government is an antisemitic conspiracy theory that claims Jews secretly control the governments of Western states. Other variants such as "Jewish occupational go ...

Methods of neuro-linguistic programming

The methods of neuro-linguistic programming are the specific techniques used to perform and teach neuro-linguistic programming, a pseudoscience which teaches that people are only able to directly perceive a small part of the world using their con ...