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  • 1
    Electronic Resource
    Electronic Resource
    Constrained definite Hessians tend to be well conditioned (1981)
    Springer
    Mathematical programming 21 (1981), S. 235-238 
    Details
    ISSN: 1436-4646
    Keywords: Constraints ; Ill-conditioning ; Hessians
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract The testing of optimization algorithms requires the running of problems with ill-conditioned Hessians. For constrained problems, it is the projection of the Hessian onto the space determined by the active constraints that must be ill conditioned. In this note it is argued that unless the Hessian and the constraints are constructed together, the constrained Hessian is likely to be well conditioned. The approach is to examine the effects of random constraints on a singular Hessian.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01584245
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  • 2
    Electronic Resource
    Electronic Resource
    Molekulare Struktur und Zerstreuung von Röntgenstrahlen (1928)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 171 (1928), S. 61-72 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wird die bisherige Literatur zur Frage der Zerstreuung von Röntgenstrahlen in nichtkristallinen Substanzen aufgezählt.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19281710107
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    Paper (German National Licenses)
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