Thales searched for a simple material-form directly perceptible by the senses, behind the appearances of things, and his theory is also related to the older animism.

Alexander Grothendieck (; ; born 28 March 1928 ) is a mathematician and the central figure behind the creation of the modern theory of algebraic geometry.

His conjectural theory of motives has been a driving force behind modern developments in algebraic K-theory, motivic homotopy theory, and motivic integration.

The theory behind these refuges is to slow the evolution of the pests ' resistance to the Bt pesticide.

The physical model behind cosmic inflation is extremely simple, however it has not yet been confirmed by particle physics, and there are difficult problems reconciling inflation and quantum field theory.

A proven conspiracy theory, such as the notion that Nixon and his aides were behind the Watergate break-in and cover-up, is usually referred to as something else, such as investigative journalism or historical analysis.

As a scientific discipline, computer vision is concerned with the theory behind artificial systems that extract information from images.

The basic theory behind all business organizations is that, by combining certain functions within a single entity, a business ( usually called a firm by economists ) can operate more efficiently, and thereby realize a greater profit.

* A tutorial on the theory behind and solution of the Diffusion Equation.

Skeptics claim that there is a lack of a viable theory of the mechanism behind ESP, and that there are historical cases in which flaws have been discovered in the experimental design of parapsychological studies.

One theory used to solve the mystery behind the authorship of 1 Peter, is the " secretarial hypothesis ", which suggests that 1 Peter was dictated by Peter and was written in Greek by his secretary, Silvanus ( 5: 12 ).

The theory behind full disclosure is that releasing vulnerability information immediately results in quicker fixes and better security.

Much of the mathematics behind information theory with events of different probabilities was developed for the field of thermodynamics by Ludwig Boltzmann and J. Willard Gibbs.

His theory of justice uses a device called the original position to ask us which principles of justice we would choose to regulate the basic institutions of our society if we were behind a ' veil of ignorance.

Rawls asks us to imagine ourselves behind a veil of ignorance that denies us all knowledge of our personalities, social statuses, moral characters, wealth, talents and life plans, and then asks what theory of justice we would choose to govern our society when the veil is lifted, if we wanted to do the best that we could for ourselves.

While details of macroevolution are continuously studied by the scientific community, the overall theory behind macroevolution ( i. e. common descent ) has been overwhelmingly consistent with empirical data.

There are several theories behind the origin of the name Mojito ; one such theory holds that name relates to mojo, a Cuban seasoning made from lime and used to flavour dishes.

Classical measure theory makes deep usage of the axiom of choice, which is fundamental to, first, distinction between measurable and non-measurable sets, the existence of the latter being behind such famous results as the Banach – Tarski paradox, and secondly the hierarchies of notions of measure captured by notions such as Borel algebras, which are an important source of intuitions in set theory.

For example, profit maximization lies behind the neoclassical theory of the firm, while the derivation of demand curves leads to an understanding of consumer goods, and the supply curve allows an analysis of the factors of production.

This is the general theory behind using stacks in programming languages to evaluate a statement in prefix notation, although there are various algorithms that manipulate the process.

Before the electronic age, the RGB color model already had a solid theory behind it, based in human perception of colors.

The guiding principle behind settlement was that of systematic colonisation, a theory espoused by Edward Gibbon Wakefield that was later employed by the New Zealand Company.

What is the history of criticism but the history of men attempting to make sense of the manifold elements in art that will not allow themselves to be reduced to a single philosophy or a single aesthetic theory??

Accordingly, it is the aim of this essay to advance a new theory of imitation ( which I shall call mimesis in order to distinguish it from earlier theories of imitation ) and a new theory of invention ( which I shall call symbol for reasons to be stated hereafter ).

The central concern of Erich Auerbach's impressive volume called Mimesis is to describe the shift from a classic theory of imitation ( based upon a recognition of levels of truth ) to a Christian theory of imitation in which the levels are dissolved.

And it is clearly argued by Lord Percy of Newcastle, in his remarkable long essay, The Heresy Of Democracy, and in a more general way by Voegelin, in his New Science Of Politics, that this same Rousseauan idea, descending through European democracy, is the source of Marx's theory of the dictatorship of the proletariat.

Thus, in no ordinary sense of ' simplicity ' is the Ptolemaic theory simpler than the Copernican.

Analogously, anyone who argues that Einstein's theory of gravitation is simpler than Newton's, must say rather more to explain how it is that the latter is mastered by student-physicists, while the former can be managed ( with difficulty ) only by accomplished experts.

In a sense, Einstein's theory is simpler than Newton's, and there is a corresponding sense in which Copernicus' theory is simpler than Ptolemy's.

The strongest appeal of the Copernican formulation consisted in just this: ideally, the justification for dealing with special problems in particular ways is completely set out in the basic ' rules ' of the theory.

My reply is that I associate myself with all those who affirm that Gentile-Jewish relations should contribute to the theory and practice of human dignity.

Finally we may note that the idea appears in educational theory where its influence is at present widespread.

The point is that an ethical critic, with an assist from Freud, can seize on this theory to argue that tragedy provides us with a harmless outlet for our hostile urges.

In his study Samuel Johnson, Joseph Wood Krutch takes this line when he says that what Aristotle really means by his theory of catharsis is that our evil passions may be so purged by the dramatic ritual that it is `` less likely that we shall indulge them through our own acts ''.

But beginning, for all practical purposes, with Frederick Seebohm's English Village Community scholars have had to reckon with a theory involving institutional and agrarian continuity between Roman and Anglo-Saxon times which is completely at odds with the reigning concept of the Anglo-Saxon invasions.

that theory was and is sound.

This, of course, results from the non-systematic, ' cellular ' character of Ptolemaic theory.

Of course it had always been of European origin in fact, but it had maintained a universal outlook under the natural law theory.

Of course, the current state of technology at any given time can put limitations on what can be achieved experimentally and theoretically so it may take considerable time for theory to be refined.

Moreover, some of Dutton's categories seem too broad: a physicist might entertain hypothetical worlds in his / her imagination in the course of formulating a theory.

It is also worth noting that part of the original motivation of the search for stellar parallax was to test the Copernican theory that the Earth revolves around the Sun, but of course the existence of aberration also establishes the truth of that theory.

This is totally spurious, since no matter who measured first the other will measure the opposite spin despite the fact that ( in theory ) the other has a 50 % ' probability ' ( 50: 50 chance ) of measuring the same spin, unless data about the first spin measurement has somehow passed faster than light ( of course TI gets around the light speed limit by having information travel backwards in time instead ).

In the course of studying the problem, Church and his student Stephen Kleene introduced the notion of λ-definable functions, and they were able to prove that several large classes of functions frequently encountered in number theory were λ-definable.

Students of control engineering may start with a linear control system course dealing with the time and complex-s domain, which requires a thorough background in elementary mathematics and Laplace transform ( called classical control theory ).

Hilbert's work had started logic on this course of clarification ; the need to understand Gödel's work then led to the development of recursion theory and then mathematical logic as an autonomous discipline in the 1930s.

Utilitarianism is a hedonistic ethical theory that argues the proper course of action is one that maximizes overall " happiness ".

A theory of electromagnetism, known as classical electromagnetism, was developed by various physicists over the course of the 19th century, culminating in the work of James Clerk Maxwell, who unified the preceding developments into a single theory and discovered the electromagnetic nature of light.

It is an ethical theory holding that the proper course of action is the one that maximizes the overall " good " of the society.

Any undergraduate course in trade theory includes a presentation of Ricardo's example of a two-commodity, two-country model.

* Fundamentals of Flight, Richard S. Shevell, Prentice-Hall International Editions, ISBN 0-13-332917-8 – This book is primarily intended as a text for a one semester undergraduate course in mechanical or aeronautical engineering, although its sections on theory of flight are understandable with a passing knowledge of calculus and physics.

A concurrent theory would be that supply and demand would cause media to attain a neutral balance because consumers would of course gravitate towards the media they agreed with.

* Shawn Hedman, A first course in logic: an introduction to model theory, proof theory, computability, and complexity, Oxford University Press, 2004, ISBN 0-19-852981-3.

Of course this theorem is considered irrelevant by economists who do not believe that general equilibrium theory correctly predicts the functioning of market economies ; but it is given great importance by neoclassical economists and it is the theoretical reason given by them for combating monopolies and for antitrust legislation.

" His theory was that an underground water course may flow under " haunted " locations and that after heavy rainfall the stream could cause structural movement of the property, possibly causing the house to vibrate and move objects.

" It may be utilized only when the circumstances of the incident, without further proof, are such that, in the ordinary course of events, the incident could not have happened except on the theory of negligence ..."

Frisch also started lecturing a course on production theory, introducing a mathematization of the subject.

Darwin's book introduced the scientific theory that populations evolve over the course of generations through a process of natural selection.