• Singular is a computer algebra system for polynomial computations, with special emphasis on commutative and non-commutative algebra, algebraic geometry, and singularity theory. It is free and open-source under the GNU General Public Licence.

    Singular provides

    • highly efficient core algorithms,
    • a multitude of advanced algorithms in the above fields,
    • an intuitive, C-like programming language,
    • easy ways to make it user-extendible through libraries, and
    • a comprehensive online manual and help function.

    They went to live at the ancient castle of Chimay, [110] where they led an intellectual and splendid life, surrounded by the great artists, musicians, and literary men of the day, and by many devoted friends. They spent their winters in Brussels, but a bitter drop in Trzias cup of happiness was the absolute refusal of the King and Queen to receive her at court. The Prince, who was the Kings Chamberlain, had to go without her.121Its main computational objects are ideals, modules and matrices over a large number of baserings. These include

    • polynomial rings over various ground fields and some rings (including the integers),
    • localizations of the above,
    • a general class of non-commutative algebras (including the exterior algebra and the Weyl algebra),
    • quotient rings of the above,
    • tensor products of the above.
    Singular's core algorithms handle

    • Grbner resp. standard bases and free resolutions,
    • polynomial factorization,
    • resultants, characteristic sets, and numerical root finding.

    Its advanced algorithms, contained in currently more than 90 libraries, address topics such as absolute factorization, algebraic D-modules, classification of singularities, deformation theory, Gauss-Manin systems, Hamburger-Noether (Puiseux) development, invariant theory, (non-) commutative homological algebra, normalization, primary decomposition, resolution of singularities, and sheaf cohomology.

    Avait-il des chemises,Further functionality is obtained by combining Singular with third-party software linked to SINGULAR. This includes tools for convex geometry, tropical geometry, and visualization.

    Singular is developed under the direction of Wolfram Decker, Gert-Martin Greuel, Gerhard Pfister, and Hans Schnemann who head Singular's core development team within the Department of Mathematics of the University of Kaiserslautern.

    Again the King let slip a golden opportunity, for he could have left that night in perfect safety with a strong escort, and placed himself and the royal [215] family in safety, if only he had taken advantage of the favourable disposition of the troops, but the chance was lost, the demonstration infuriated and alarmed the Revolutionists, who succeeded in corrupting part of the regiment de Flandre, made La Fayette head of the National Guards, and carried the King and royal family to Paris.

    1. Funding
    1. Jenks Prize
    1. History
    1. Acknowledgements




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