IBM Redbooks are " Theories of operation " of their products.

Since then there have been several proposals for Grand Unified Theories, e. g. the Pati-Salam model, although none is currently universally accepted.

Theories to unify these phenomena state that the XY model can be viewed as a discretized version of this type of systems.

Models that do not unify all interactions using one simple Lie group as the gauge symmetry, but do so using semisimple groups, can exhibit similar properties and are sometimes referred to as Grand Unified Theories as well.

Theories or models can be more readily tested.

# Theories also help place events in a causal context that is greater than common sense alone can provide, because commonsense causation is inherently limited by what we see and experience.

However, by developing explicit processes that generate change from individuals, groups or communities ( Theories of Change ), and by fusing political economy analysis and outcome mapping tools, the complex state-citizen dynamics can be better understood.

Theories of collective action emphasise how group behavior can, in some sense, be linked to social institutions.

Theories which assert that the universe has an infinite age, including many of the theories described above, fail to account for the abundance of deuterium in the cosmos, because deuterium easily undergoes nuclear fusion in stars and there are no known astrophysical processes other than the Big Bang itself that can produce it in large quantities.

The boolean satisfiability problem ( SAT ), the Satisfiability Modulo Theories ( SMT ) and answer set programming ( ASP ) can be roughly thought of as certain forms of the constraint satisfaction problem.

One can also find this view in Maurice Dobb's Theories of Value and Distribution Since Adam Smith: Ideology and Economic Theory ( 1973 ), as well as in Karl Marx's Theories of Surplus Value.

Theories that predict the formation of these structures within the observable universe ( see: inflation ) can therefore be largely ruled out.

Theories of the importance of both line and color asserted that through these elements an artist exerts control over the medium to create psychological effects, in which themes, emotions, and ideas can be represented.

Baryon number violation can also result from physics beyond the Standard Model ( see supersymmetry and Grand Unification Theories ).

Theories of frontal lobe function can be differentiated into four categories:

It is largely his conceptual analysis that made his work much more rigorous than his peers ', a point which can be seen clearly in his seminal work Are Theories of Learning Necessary?

Another critique can be found in historian Gregory S. Camp's 1997 book Selling Fear: Conspiracy Theories and End-Times Paranoia.

Theories that can be finitely axiomatized are seen as a bit more metamathematically elegant, even if they are less practical for deductive work.

Many Grand Unified Theories ( but not Pati-Salam ) predict that the proton can decay, and if this were to be seen, details of the decay products could give hints at more aspects of the Grand Unified Theory.

Theories contend that during complex learning activities the amount of information and interactions that must be processed simultaneously can either under-load, or overload the finite amount of working memory one possesses.

Theories with strong predictive power are highly valued, because the predictions can often encourage the falsification of the theory.

While Media Influence Theories are often used to demonstrate the negative effects of the media on society, it is also of note that media can influence in a good way.

Vai has performed an arrangement of this piece with The Metropole Orchestra in the Netherlands, a nine minute version of this arrangement by Chris Opperman can be found on his Sound Theories album.

A slightly larger count ( but still better than split radix for N ≥ 256 ) was shown to be provably optimal for N ≤ 512 under additional restrictions on the possible algorithms ( split-radix-like flowgraphs with unit-modulus multiplicative factors ), by reduction to a Satisfiability Modulo Theories problem solvable by brute force ( Haynal & Haynal, 2011 ).

Theories could be divided into two categories: top-down and bottom-up.

Theories more favorable to corporate activities may be praised using the term " sound science ".

Theories may be expressed mathematically, symbolically, or in common language, but are generally expected to follow principles of rational thought or logic.

He later regarded it as a flawed exposition of his logical system, and wanted An Investigation of the Laws of Thought ( 1854 ), on Which are Founded the Mathematical Theories of Logic and Probabilities to be seen as the mature statement of his views.

Theories for this warming include a change of frost patterns on Triton's surface and a change in ice albedo, which would allow more heat to be absorbed.

Theories about the origin of the city's name suggest that it may be a corruption of the Spanish la virgen, after the nearby Virgin River, or possibly an error in the transcription of the term " beaver skin.

Theories of secession address a fundamental problem of political philosophy: the legitimacy and moral basis of the state's authority, be it based on " God's will ", consent of the people, the morality of goals, or usefulness to obtaining goals.

Theories do not have to be perfectly accurate to be scientifically useful.

Theories of the middle range should be firmly supported by empirical data.

Theories, some of them rather bizarre, abound: some contemporary scholars suggest, for example, that the persona may be a woman ; if so, the strangulation could stem from frustration with the world.

Theories and practices of folk medicine may influence, or be influenced by, the formalized medicine systems of the same culture.

* Self-taught English mathematician George Green publishes An Essay on the Application of Mathematical Analysis to the Theories of Electricity and Magnetism in Nottingham, the first mathematical theory of electricity and magnetism, introducing a version of Green's theorem, the idea of potential theory, and the concept of what will come to be called Green's functions.

Theories have been proposed that this description may have some relation to notions of the Jordan River due to phonetic and typological similarities perceived by Eilífr, though there may be no other causative connection.

In one of their more serious experiments during the " Conspiracy Theories " episode, Teller fires a rifle at a melon wrapped in one-inch fiberglass tape to demonstrate that when a human head is shot, it is likely to be forced in the direction opposite to the bullet's trajectory.

Theories which claim that morality is derived from reasoning about implied imperatives ( universal prescriptivism ), the edicts of a god ( divine command theory ), or the hypothetical decrees of a perfectly rational being ( ideal observer theory ), are considered anti-realist in the robust sense used here, but are considered realist in the sense synonymous with moral universalism.

Most of the relevant theories were derived by the German geodesist Friedrich Robert Helmert in his famous books Die mathematischen und physikalischen Theorieen der höheren Geodäsie, Einleitung und 1 Teil ( 1880 ); English translation: Mathematical and Physical Theories of Higher Geodesy, Vol.

Theories of the existence of separate Gothic runes have been advanced, even identifying them as the original alphabet from which the Futhark were derived, but these have little support in findings ( mainly the spearhead of Kovel, with its right-to-left inscription, its T-shaped tiwaz, and its rectangular dagaz ).