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Preconditioner information


In mathematics, preconditioning is the application of a transformation, called the preconditioner, that conditions a given problem into a form that is more suitable for numerical solving methods. Preconditioning is typically related to reducing a condition number of the problem. The preconditioned problem is then usually solved by an iterative method.

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Preconditioner

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In mathematics, preconditioning is the application of a transformation, called the preconditioner, that conditions a given problem into a form that is...

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Precondition

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In computer programming, a precondition is a condition or predicate that must always be true just prior to the execution of some section of code or before...

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Conjugate gradient method

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sophisticated preconditioners are used, which may lead to variable preconditioning, changing between iterations. Even if the preconditioner is symmetric...

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Ischemic preconditioning

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Ischemic preconditioning (IPC) is an experimental technique for producing resistance to the loss of blood supply, and thus oxygen, to tissues of many...

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Incomplete LU factorization

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still sparse over all. This preconditioner is called ILU(1). One can then generalize this procedure; the ILU(k) preconditioner of a matrix A is the incomplete...

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Multigrid method

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if the preconditioner is not SPD. Originally described in Xu's Ph.D. thesis and later published in Bramble-Pasciak-Xu, the BPX-preconditioner is one of...

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Sensory preconditioning

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Sensory preconditioning is an extension of classical conditioning. Procedurally, sensory preconditioning involves repeated simultaneous presentations (pairing)...

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Creative Commons license

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A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted "work". A CC...

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Sigmund Freud

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unconscious memories of sexual molestation in early childhood were a necessary precondition for psychoneuroses (hysteria and obsessional neurosis), a formulation...

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Earth

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reducing agents such as hydrogen is thought to have been a necessary precondition for the widespread accumulation of oxygen in the atmosphere. Hence the...

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Design by contract

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components, which extend the ordinary definition of abstract data types with preconditions, postconditions and invariants. These specifications are referred to...

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Humanism

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democracy. People with a humanist worldview maintain religion is not a precondition of morality, and object to excessive religious entanglement with education...

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Apartheid

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demanded "the just predominance of the white race" in South Africa as a precondition for the Boer republics unifying with the British Empire. In 1905 the...

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Predicate transformer semantics

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weakest-preconditions, or runs forward in the case of strongest-postconditions. For a statement S and a postcondition R, a weakest precondition is a predicate...

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North Macedonia

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was similar to NATO's in that resolution of the naming dispute was a precondition for the start of accession talks. In October 2012, the EU Enlargement...

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Ischemia

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ischemia-reperfusion. Curve B - a set of short ischemic episodes (ischemic preconditioning) before prolonged ischemia provides functional recovery of contractile...

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Benjamin Netanyahu

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no discussion of the case of Jerusalem, no negotiations under any preconditions. In 1997, Netanyahu authorized a Mossad operation to assassinate Hamas...

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Petroleum

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principle of State Immunity is to be answered in accordance with the preconditions set by the UN Convention as an expression of common principles of International...

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Partition of India

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only safeguard for Muslim interests throughout India and had to be the precondition for any advance at the center. So he exhorted all Indian Muslims to unite...

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Jharkhand

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hung assembly, RJD's dependence on the Congress extended support on the precondition that RJD would not pose a hurdle to the passage of the Bihar reorganisation...

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Republika Srpska

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and army by 1 January 2006. These reforms were required by NATO as a precondition of Bosnia and Herzegovina's admission to the Partnership for Peace programme...

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