Exploring Mysticism, and Parapsychology.This blog is also an attempt to promote awareness of a Modern Universal Paradigm known as Multi-Dimensional Science. It offers a "Scientific" testable Hypothesis for a more "objective" understanding of claimed Psychic and Spiritual Phenomena. A link to this subject should be found onsite or alternatively easily traceable via a word search. Please note that the Internet articles here may not reflect the views of the Blogger.
Wednesday, 20 November 2013
Hilbert Space
Blogger Reference Link http://www.p2pfoundation.net/Multi-Dimensional_Science
Hilbert space, in mathematics, an example of an infinite-dimensional space that had a major impact in analysis and topology. The German mathematician David Hilbert first described this space in his work on integral equations and Fourier series, which occupied his attention during the period 1902–12.
The points of Hilbert space are infinite sequences (x1, x2, x3, …) of real numbers that are square summable, that is, for which the infinite series x12 + x22 + x32 + … converges to some finite number. In direct analogy with n-dimensional Euclidean space, Hilbert space is a vector space that has a natural inner product, or dot product, providing a distance function. Under this distance function it becomes a complete metric space and, thus, is an example of what mathematicians call a complete inner product space.
Soon after Hilbert’s investigation, the Austrian-German mathematician Ernst Fischer and the Hungarian mathematician Frigyes Riesz proved that square integrable functions (functions such that integration of the square of their absolute value is finite) could also be considered as “points” in a complete inner product space that is equivalent to Hilbert space. In this context, Hilbert space played a role in the development of quantum mechanics, and it has continued to be an important mathematical tool in applied mathematics and mathematical physics.
In analysis, the discovery of Hilbert space ushered in functional analysis, a new field in which mathematicians study the properties of quite general linear spaces. Among these spaces are the complete inner product spaces, which now are called Hilbert spaces, a designation first used in 1929 by the Hungarian-American mathematician John von Neumann to describe these spaces in an abstract axiomatic way. Hilbert space has also provided a source for rich ideas in topology. As a metric space, Hilbert space can be considered an infinite-dimensional linear topological space, and important questions related to its topological properties were raised in the first half of the 20th century. Motivated initially by such properties of Hilbert spaces, researchers established a new subfield of topology called infinite dimensional topology in the 1960s and ’70s.
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