ZIB

Treffer pro Seite

Treffer 1 - 3 | 3 Treffer

Sortierung

Digitale Medien

On an implementation of standard bases and syzygies in SINGULAR (1996)

Grassmann, H. ; Greuel, G. -M. ; Martin, B. ; [weitere]

Springer

Applicable algebra in engineering, communication and computing 7 (1996), S. 235-249

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-0622

Schlagwort(e): Standard bases ; Syzygies ; Computer algebra system ; Highest corner ; EcartMethod

Quelle: Springer Online Journal Archives 1860-2000

Thema: Informatik , Mathematik , Technik allgemein

Notizen: Abstract We describe an implementation of a general standard basis algorithm, valid for any monomial ordering compatible with the natural semigroup structure. We concentrate on new strategies which have proved useful, in particular in the non-wellordering case. Moreover, we describe the first implementation of Schreyer's method to compute syzygies and compare it with other, more classical methods. Comparisons of the computing time of several examples in the system SINGULAR give hints as to which strategies should be used in different classes of examples.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01190332

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

The Preparation of Carbodiimides from IsocyantesDedicated to Prof. Dr. Otto Bayer on the occasion of his 60th birthday. (1962)

Neumann, W. ; Fisher, Peter

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 1 (1962), S. 621-625

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0570-0833

Schlagwort(e): Carbodiimides ; Isocyanates ; Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Carbodiimides are formed with simultaneous evolution of CO2 by the reaction of basic catalyst with sterically hindered isocynates. Another generally applicable synthesis of carbodiimides involves intermediate formation of cyclic adducts of isocyanates and carbodiimides, which, upon cleavage, exchange the isocyanate and carbodiimide functions. Both processes are suitable for the preparation of polycarboiimides. Several commercial applications of mono- and polycarbodiimides are pointed out.

Zusätzliches Material: 4 Tab.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/anie.196206211

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

Recent Developments in Organotin Chemistry (1963)

Neumann, W. P. ; Burkhardt, G. ; Heymann, E. ; [weitere]

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 2 (1963), S. 165-175

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0570-0833

Schlagwort(e): Organotin compounds ; Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: New synthetic methods developed in the field of organotin compounds since 1959 are reviewed. The use of alkyl aluminum compounds brings an advance in the preparation of tetraalkyltin derivatives, alkyltin halides, and alkyltin hydrides. Organotin hydrides offer new possibilities for the production of monomeric and polymeric organotin compounds. Diethyltin and diphenyltin, which are obtained by catalytic dehydrogenation of the respective dialkyltin dihydrides, are cyclic compounds. - The literature since 1959 is reviewed.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/anie.196301651

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Treffer 1 - 3 | 3 Treffer