Changeset 7476bc in git
- Timestamp:
- Oct 15, 2013, 10:31:38 AM (11 years ago)
- Branches:
- (u'spielwiese', '17f1d200f27c5bd38f5dfc6e8a0879242279d1d8')
- Children:
- 1c0823c8f21646ea01043ff03c516b598de0f7fc
- Parents:
- 76d26c42ef4754edaa37b1777b4d2831f6f7e349
- File:
-
- 1 edited
Legend:
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Singular/LIB/schubert.lib
r76d26c r7476bc 1 ////////////////////////////////////////////////////////////////////////// 1 //////////////////////////////////////////////////////////////////////////////// 2 2 version="version schubert.lib 4.0.0.0 Jun_2013 "; // $Id$ 3 4 3 category="Algebraic Geometry"; 5 4 info=" … … 17 16 , Grassmannians, and projective bundles. 18 17 19 <<<<<<< HEAD20 PROCEDURES:21 makeVariety(int,ideal) create a variety22 productVariety(variety,variety) product of two varieties23 ChowRing(variety) create the Chow ring of a variety24 dimension(variety) dimension of a variety25 relations(variety) relations of a variety26 Grassmannian(int,int) create a Grassmannian as a variety27 projectiveSpace(int) create a projective space as a variety28 projectiveBundle(sheaf) create a projective bundle as a variety29 integral(variety,poly) degree of a 0-cycle on a variety30 makeSheaf(variety,poly) create a sheaf31 ChernCharacter(sheaf) the Chern character of a sheaf32 totalChernClass(sheaf) the total Chern class of a sheaf33 ChernClass(sheaf,int) the k-th Chern class of a sheaf34 topChernClass(sheaf) the top Chern class of a sheaf35 totalSegreClass(sheaf) the total Segre class of a sheaf36 dualSheaf(sheaf) the dual of a sheaf37 tensorSheaf(sheaf,sheaf) the tensor of two sheaves38 symmetricPowerSheaf(sheaf,int) the k-th symmetric power of a sheaf39 minusSheaf(sheaf,sheaf) the quotient of two sheaves40 plusSheaf(sheaf,sheaf) the direct sum of two sheaves41 =======42 18 An important task of this library is related to the computation of 43 19 Gromov-Witten invariants. In particular, we implement new tools for the … … 48 24 Kontsevich, and the graphs corresponding to the fixed point components of a 49 25 torus action on the moduli spaces of stable maps. 50 >>>>>>> 2ba3231... chg: new version of schubert.lib51 26 52 27 REFERENCES: … … 1766 1741 return(V); 1767 1742 } 1768 <<<<<<< HEAD 1769 1770 proc dimension(variety V) 1771 ======= 1772 example 1773 >>>>>>> 2ba3231... chg: new version of schubert.lib 1743 example 1774 1744 { 1775 1745 "EXAMPLE:"; echo=2; … … 1870 1840 G24; 1871 1841 def r = G24.baseRing; 1872 <<<<<<< HEAD1873 =======1874 1842 setring r; 1875 >>>>>>> 2ba3231... chg: new version of schubert.lib1876 1843 subBundle; 1877 1844 quotientBundle;
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