ZIB

1

Electronic Resource

Convergence properties of ART and SOR algorithms (1991)

Elsner, L. ; Koltracht, I. ; Lancaster, P.

Springer

Numerische Mathematik 59 (1991), S. 91-106

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ISSN: 0945-3245

Keywords: AMS(MOS) 65F10 ; 15A06 ; CR: G1.3

Source: Springer Online Journal Archives 1860-2000

Topics: Mathematics

Notes: Summary ART algorithms with relaxation parameters are studied for general (consistent or inconsistent) linear algebraic systemsRx=f, and a general convergence theorem is formulated. The advantage of severe underrelaxation is reexamined and clarified. The relationship to solutions obtained by applying SOR methods to the equationRR T y=f is investigated.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01385772

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2

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Convergence of sequential and asynchronous nonlinear paracontractions (1992)

Elsner, L. ; Koltracht, I. ; Neumann, M.

Springer

Numerische Mathematik 62 (1992), S. 305-319

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ISSN: 0945-3245

Keywords: MSC 1991 ; 65F10

Source: Springer Online Journal Archives 1860-2000

Topics: Mathematics

Notes: Summary We establish the convergence of sequential and asynchronous iteration schemes for nonlinear paracontracting operators acting in finite dimensional spaces. Applications to the solution of linear systems of equations with convex constraints are outlined. A first generalization of one of our convergence results to an infinite pool of asymptotically paracontracting operators is also presented.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01396232

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3

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A note on optimal block-scaling of matrices (1984)

Elsner, L.

Springer

Numerische Mathematik 44 (1984), S. 127-128

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ISSN: 0945-3245

Keywords: AMS(MOS): 65F35 ; CR: G1.3

Source: Springer Online Journal Archives 1860-2000

Topics: Mathematics

Notes: Summary After pointing out that two recent results on optimal blockscaling are equivalent, a new short and simple proof of both results is given.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01389760

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4

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On matrices that admit unitary reduction to band form (1998)

Ikramov, Kh. D. ; Elsner, L.

Springer

Mathematical notes 64 (1998), S. 753-760

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ISSN: 1573-8876

Keywords: Hermitean matrix ; unitary matrix ; band form of a matrix ; unitary reduction ; Krylov sequence ; Lanczos procedure

Source: Springer Online Journal Archives 1860-2000

Topics: Mathematics

Notes: Abstract It is proved in the paper that any low rank perturbation of a Hermitian matrix is unitarily reducible to band form. Moreover, if a normal matrix is unitarily reducible to band form, then any of its rank one perturbations is unitarily reducible as well.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02313033

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5

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Ueber das Härten des Gipses (1844)

Elsner, L.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 31 (1844), S. 503-511

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.18440310175

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6

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Ueber die Entstehung eines matt weissen Ueberzuges auf metallenen Gegenständen, in Cyankalium-Goldlösungen (1844)

Elsner, L.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 33 (1844), S. 18-21

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.18440330103

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7

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Ueber die Gefährlichkeit des Pyrophors aus Brechweinstein (1844)

Elsner, L.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 33 (1844), S. 27-29

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.18440330105

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8

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Ueber die chemische Zusammensetzung des rheinischen Cements (Trass, Dukstein) (1844)

Elsner, L.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 33 (1844), S. 21-26

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.18440330104

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9

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Ueber die chemische Zusammensetzung der Puzzolane und der vulcanischen Bomben (1845)

Elsner, L.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 34 (1845), S. 438-442

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.18450340146

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10

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Ueber die chemische Zusammensetzung eines chinesischen Metallspiegels (1845)

Elsner, L.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 34 (1845), S. 443-445

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.18450340147

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