The enumerative theory of conics after Halphen / Eduardo Casas-Alvero, Sebastian Xambó-Descamps.
Material type:
TextSeries: Lecture notes in mathematics (Springer-Verlag) ; 1196.Publication details: Berlin ; New York : Springer-Verlag, ©1986.Description: 1 online resource (viii, 128 pages) : illustrationsContent type: - text
- computer
- online resource
- 9783540398325
- 3540398325
- 510 s 516.3/52 19
- QA3 .L28 no. 1196 QA607
- 31.51
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eBook
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e-Library | eBook LN Mathematic | Available |
Includes bibliographical references (pages 126-128).
Conics -- Complete conics -- Systems of conics -- Equations of the degeneration hypersurfaces -- Conditions imposed on conics -- Action of the projective group and proper solutions of an enumarative problem -- Genericity of the data of conditions -- Local characters of a condition -- Halphen's first formula -- Computation of characteristic numbers -- Examples -- Strict equivalence of conditions -- Systems of conics contained in Sp, q -- Conics satisfying five independent conditions -- Cycles on W and on B -- Multiplicity cycles and Noether's formula -- Improper intersection numbers -- Generalization of Halphen's formula to conditions of higher order -- Examples of higher order conditions -- Strict equivalence of conditions -- Enumerative ring of W -- Computation of products in hal· (W) -- Further examples.