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The theory of integral closure of ideals and modules: Applications and new developments

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Part of the book series: NATO Science Series ((NAII,volume 21))

Abstract

Many equisingularity conditions such as the Whitney conditions, and their relative versions A f and W f , depend on controlling limiting linear structures. The theory of the integral closure of ideals and modules provides a very useful tool for studying these limiting structures. In this paper we illustrate how these tools are used in three case studies, and describe some of the advances in the theory since the survey article of [12], which was written in 1996.

Supported in part by NSF grant 9403708-DMS.

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References

  1. D.A. Buchsbaum and D.S. Rim, A generalized Koszul complex II. Depth and multiplicity, Trans. Amer. Math. Soc. 111 (1963) 197–224.

    Article  MathSciNet  Google Scholar 

  2. J. Briançon and J.P. Speder, La trivialité topologue n’implique pas les conditions de Whitney, Comptes Rendus ser. A 280 (1975) 365.

    MATH  Google Scholar 

  3. T. Fukui and L. Paunescu, Stratification theory from the weighted point of view, preprint, 1998.

    Google Scholar 

  4. T. Gaffney, Integral closure of modules and Whitney equisingularity, Invent. Math. 107 (1993) 301–322.

    Article  MathSciNet  Google Scholar 

  5. T. Gaffney, Fibers of polynomial mappings at infinity and a generalized Malgrange condition, Compositio Math. 119 (1999) 157–167.

    Article  MathSciNet  MATH  Google Scholar 

  6. T. Gaffney, L 0 equivalence of maps, Math. Proc. Camb. Phil. Soc. 128 (2000) 479–496.

    Article  MathSciNet  MATH  Google Scholar 

  7. T. Gaffney, Polar multiplicities and equisingularity of map germs, Topology 32 (1993) 185–223.

    Article  MathSciNet  MATH  Google Scholar 

  8. T. Gaffney, Plane Sections, Wf, and Af, Real and Complex Singularities (eds J.W. Bruce and F. Tari), Research Notes in Math. 412 (Chapman and Hall/CRC 2000) pp 16–32.

    Google Scholar 

  9. T. Gaffney and R. Gassler, Segre numbers and hypersurface singularities, Jour. Alg. Geom. 8 (1999) 695–736.

    MathSciNet  MATH  Google Scholar 

  10. T. Gaffney and S. Kleiman, Specialization of integral dependence for modules, Invent, math. 137 (1999) 541–574.

    Article  MathSciNet  MATH  Google Scholar 

  11. T. Gaffney and S. Kleiman, W/ and integral dependence, Real and Complex Singularities (eds J.W. Bruce and F. Tari), Research Notes in Math. 412 (Chapman and Hall/CRC 2000) pp 33–45.

    Google Scholar 

  12. T. Gaffney and D. Massey, Trends in equisingularity theory, Singularity Theory (eds Bill Bruce and David Mond), London Math. Soc. Lecture Notes 263 (Cambridge Univ. Press, 1999) pp 207–248.

    Google Scholar 

  13. R. Gassier, Segre numbers and hypersurface singularities, thesis, Northeastern University, 1999.

    Google Scholar 

  14. M.D. Green, dissertation, Northeastern University, 1997.

    Google Scholar 

  15. M.D. Green and D.B. Massey, Vanishing cycles and Thorn’s Af conditions, preprint, Northeastern University, 1996.

    Google Scholar 

  16. G.M. Greuel, Der Gauss-Manin Zusammenhang isolierter Singularitäten von vollständigen Durchschnitten, dissertation, Göttingen, 1973; also Math. Ann. 214 (1975) 235-66.

    Google Scholar 

  17. S.L. Kleiman and A. Thorup, A geometric theory of the Buchsbaum-Rim multiplicity, J. Algebra 167 (1994) 168–231.

    Article  MathSciNet  MATH  Google Scholar 

  18. D.T. Lê, Calculation of Milnor number of isolated singularity of complete intersection, Funct. Anal. Appl. 8 (1974) 127–31.

    Article  MATH  Google Scholar 

  19. D.T. Lê and C.P. Ramanujam, The invariance of Milnor’s number implies the invariance of the topological type, Amer. J. Math. 98 (1976) 67–78.

    Article  MathSciNet  MATH  Google Scholar 

  20. D.T. Lê and B. Teissier, Cycles évanescents, sections planes et conditions de Whitney II, Singularities (ed Peter Orlik), Proc. Symp. Pure Math. 40:2, (Amer. Math. Soc, 1983) pp 65–103.

    Google Scholar 

  21. M. Lejeune-Jalabert and B. Teissier, ClAôture intégrale des idéaux et equisingularité, chapitre 1, Publ. Inst. Fourier, 1974.

    Google Scholar 

  22. E.J.N. Looijenga, Semi-universal deformation of a simple elliptic singularity: Part I unimodularity, Topology 16 (1977) 257–262.

    Article  MathSciNet  MATH  Google Scholar 

  23. D. Massey, Critical points of functions on singular spaces, Topology and its Applications, to appear.

    Google Scholar 

  24. D. Mond, Some remarks on the geometry and classification of germs of maps from surfaces to 3-space, Topology 26 (1987) 361–383.

    Article  MathSciNet  MATH  Google Scholar 

  25. A. Parusinski, On the bifurcation set of a complex polynomial with isolated singularities at infinity, University of Sydney preprint 93-46, 1993.

    Google Scholar 

  26. A. Parusinski, A note on singularities at infinity of complex polynomials, Symplectic Singularities and Geometry of Gauge Fields, Banach Center Publications 39 (Institute of Mathematics, Polish Academy of Sciences, 1997) pp 131–141.

    Google Scholar 

  27. L. Paunescu, A weighted version of the Kuiper-Kuo-Bochnak-Lojasiewicz Theorem, J. Alg. Geom. 2 (1993) 69–79.

    MathSciNet  MATH  Google Scholar 

  28. L. Paunescu, V-sufficiency from the weighted point of view, J. Math. Soc. Japan 46 1994.

    Google Scholar 

  29. V.H.J. Perez, Polar multiplicities and equisingularity of map germs from ℂ3 → ê3, thesis, Univ. de Sao Paulo, 2000.

    Google Scholar 

  30. D. Siersma and M. Tibär, Singularities at infinity and their vanishing cycles, Duke Math. J. 80 (1995) 771–783.

    Article  MathSciNet  MATH  Google Scholar 

  31. B. Teissier, Cycles évanescents, sections planes et conditions de Whitney, Singularités à Cargèse, Astérisque 7-8 (1973) 285–362.

    MathSciNet  Google Scholar 

  32. B. Teissier, The hunting of invariants in the geometry of the discriminant, Real and complex singularities, Oslo 1976 (ed P. Holm) (Sijthoff & Noordhoff, 1977) pp 565–678.

    Google Scholar 

  33. B. Teissier, Sur une inégalité à la Minkowski pour les multiplicités, Ann. of Math. 106 (1978) 40–44.

    MathSciNet  Google Scholar 

  34. B. Teissier, On a Minkowski-type inequality for Multiplicities II, C.P. Ramanujam-a tribute Studies in Math. 8 (Tata Institute, 1978) pp 347–361.

    MathSciNet  Google Scholar 

  35. M. Tibăr, Asymptotic equisingularity and topology of complex hyp ersurf aces, Internat. Math. Research Notices 18 (1998) 979–990.

    Article  Google Scholar 

  36. M. Tibăr, Topology at infinity of polynomial mappings and Thorn regularity condition, Compositio Math. 111 (1998) 89–109.

    Article  MathSciNet  MATH  Google Scholar 

  37. R. Vohra, Equisingularity of map germs from ℂn → → ℂ2, thesis, Northeastern University, 2000.

    Google Scholar 

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Gaffney, T. (2001). The theory of integral closure of ideals and modules: Applications and new developments. In: Siersma, D., Wall, C.T.C., Zakalyukin, V. (eds) New Developments in Singularity Theory. NATO Science Series, vol 21. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0834-1_16

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  • DOI: https://doi.org/10.1007/978-94-010-0834-1_16

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-6997-4

  • Online ISBN: 978-94-010-0834-1

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