As Diggins concludes regarding the highly influential Cooper Union speech of early 1860, " Lincoln presented Americans a theory of history that offers a profound contribution to the theory and destiny of republicanism itself.

This theory extends general relativity by removing a constraint of the symmetry of the affine connection and regarding its antisymmetric part, the torsion tensor, as a dynamical variable.

Albert Einstein, in 1922, said regarding contemporary theories of superconductivity that “ with our far-reaching ignorance of the quantum mechanics of composite systems we are very far from being able to compose a theory out of these vague ideas ”

Further difficulties arise from ambiguity regarding the term " theory ".

In the yin-yang theory, detailed attributions are made regarding the yin or yang character of things:

Although passive cable theory offers insights regarding input propagation along dendrite segments, it is important to remember that dendrite membranes are host to an abundance of proteins some of which may help amplify or attenuate synaptic input.

A controversy emerged regarding deletion of the concept of neurosis, a mainstream of psychoanalytic theory and therapy but seen as vague and unscientific by the DSM task force.

Usually, a researcher has a certain theory regarding the topic under investigation.

Whilst Laura Mulvey's paper has a particular place in the feminist film theory, it is also important to note that her ideas regarding ways of watching the cinema ( from the voyeuristic element to the feelings of identification ) have been very important in terms of defining spectatorship from the psychoanalytical view point.

Modern game theory began with the idea regarding the existence of mixed-strategy equilibria in two-person zero-sum games and its proof by John von Neumann.

The first and, for a long time, most popular theory regarding the composition of Greek fire held that its chief ingredient was saltpeter, making it an early form of gunpowder.

Meta-ethical theories are commonly categorized as either a form of realism or as one of three forms of " anti-realism " regarding moral facts: ethical subjectivism, error theory, or non-cognitivism.

For instance, the motion of a spacecraft, regarding its orbit and attitude ( rotation ), is described by the relativistic theory of classical mechanics, while the analogous movements of an atomic nucleus are described by quantum mechanics.

Koneru Ramakrishna Rao, a past President of the Parapsychological Association, has written that the lack of any agreed-upon theory of parapsychology is one reason for the general skepticism of the scientific community regarding the existence of paranormal phenomena.

Since the soul is a spiritual substance it is not brought into being through transformation of matter, but directly by God, whence the special uniqueness of each person .." Fifty years later, Pope John Paul II, stating that scientific evidence now seemed to favour the evolutionary theory, upheld the distinction of Pius XII regarding the human soul.

Thus punctuated equilibrium contradicts some of Darwin's ideas regarding the specific mechanisms of evolution, but generally accords with Darwin's theory of evolution by natural selection.

Specifically, he demonstrated an upper limit, known as Bell's inequality, regarding the strength of correlations that can be produced in any theory obeying local realism, and he showed that quantum theory predicts violations of this limit for certain entangled systems.

The predominant theory regarding its formation is that the progenitor galaxy was a barred spiral galaxy whose arms had a velocity too great to keep its coherence and therefore detached.

In the present day, Langford's daughter Catherine offers Egyptologist Daniel Jackson, a down-on-his-luck linguistics professor, the chance to translate ancient Egyptian hieroglyphs that may prove his controversial theory regarding the Pyramid of Khufu.

The psychical researcher John Arthur Hill wrote regarding telepathy " No physical theory of telepathy has been worked out — there are no " brain-waves " known, and no receiving stations yet discovered inside our skulls.

It is thus a simpler theory than one that also requires hidden reasons regarding evil in order to include omnibenevolence.

While he is best known for the Kolmogorov – Arnold – Moser theorem regarding the stability of integrable Hamiltonian systems, he made important contributions in several areas including dynamical systems theory, catastrophe theory, topology, algebraic geometry, classical mechanics and singularity theory, including posing the ADE classification problem, since his first main result — the partial solution of Hilbert's thirteenth problem in 1957 at the age of 19.

The Axioms required to make the theoretical machinery operate are set out tersely and powerfully, so that all permissible operations within the theory can be traced rigorously back to these axioms, rules, and primitive notions.

In these circumstances, since what was expressed by the remark when first made is, on the theory before us, simply absent, the remark now expresses nothing.

Nevertheless, according to the traditional theory, a man begins in the midst of action and he analyzes its nature and immediate consequences before or while putting it forth and causing these consequences.

Also influential in these issues were Nietzsche, Heidegger, the critical theory of the Frankfurt School, Derrida and Lacan.

The most general setting in which these words have meaning is an abstract branch of mathematics called category theory.

A unified interpretation of antiparticles is now available in quantum field theory, which solves both these problems.

One of the more dramatic successes of his theory was his prediction of the existence of secondary and tertiary alcohols, a conjecture that was soon confirmed by the synthesis of these substances.

In the different systems these emanations are differently named, classified, and described, but the emanation theory itself is common to all forms of Gnosticism.

Closely linked to these cohomology theories, he originated topos theory as a generalisation of topology ( relevant also in categorical logic ).

Thus aesthetic judgments might be seen to be based on the senses, emotions, intellectual opinions, will, desires, culture, preferences, values, subconscious behavior, conscious decision, training, instinct, sociological institutions, or some complex combination of these, depending on exactly which theory one employs.

The Gaussian theory, however, is only true so long as the angles made by all rays with the optical axis ( the symmetrical axis of the system ) are infinitely small, i. e. with infinitesimal objects, images and lenses ; in practice these conditions are not realized, and the images projected by uncorrected systems are, in general, ill defined and often completely blurred, if the aperture or field of view exceeds certain limits.

It is either the collective term for ethics and aesthetics — philosophical fields that depend crucially on notions of value — or the foundation for these fields, and thus similar to value theory and meta-ethics.

Although Zermelo's fix allows a class to describe arbitrary ( possibly " large ") entities, these predicates of the meta-language may have no formal existence ( i. e., as a set ) within the theory.

According to this theory, the anonymous author attributed these events to Daniel, as prophecies that were witnessed by this writer in the 2nd century BCE.

In 1957 Bardeen and Cooper assembled these ingredients and constructed such a theory, the BCS theory, with Robert Schrieffer.

Extensions of BCS theory exist to describe these other cases, although they are insufficient to completely describe the observed features of high-temperature superconductivity.

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

Some believe that Georg Cantor's set theory was not actually implicated by these paradoxes ( see Frápolli 1991 ); one difficulty in determining this with certainty is that Cantor did not provide an axiomatization of his system.

Axiomatic set theory was developed in response to these early attempts to study set theory, with the goal of determining precisely what operations were allowed and when.

It should be noted that while there are very strong connections between graph theory and combinatorics, these two are sometimes thought of as separate subjects.

# via bundle theory as bundles of properties-categories reflect differences in these

The effect on cosmology of the dark energy that these models describe is given by the dark energy's equation of state, which varies depending upon the theory.