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PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Document Type

Article

Abstract

In this paper, will be discussed about the minimum norm in the pre- Hilbert Space, Hilbert space and its modification, and its application. The results are: Let X be a pre-Hilbert space and M is a sub space of X. If an element is fixed, then : . If there is such that , then is unique. Let H be a Hilbert space and M be a closed sub space of H . If , then there is a unique element such that , . Let X be a Hilbert space , M be a closed sub space of X . If V =x+ M, for an element xX, then there is a unique element of such that , M.Key words : minimum norm, pre-Hilbert space, Hilbert space , orthogonality

Page Range

1-14

Issue

1

Volume

3

Digital Object Identifier (DOI)

10.21831/pg.v3i1.628

Source

https://journal.uny.ac.id/index.php/pythagoras/article/view/628

References

[1] Depree, J.D, Swartz, C.W. 1988. Introduction to Real Analysis. John Wiley & Sons, Inc. New York.

[2] Luenberger, D.G. 1968. Optimization by Vector Space Method. John Wiley & Sons, Inc. New York.

[3] Smith,L. 1998. Linear Algebra 3th Edition. Springer-Verlag. New York.

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