Le but de ce papier est une caractérisation de certaines singularités en fonction d’un nouvel invariant, la “discrépance de Mather”. Nous montrons également quelques résultats nous prouvant que la discrépance de Mather est un invariant raisonnable d’un point de vue de la géométrie birationnelle.
A goal of this paper is a characterization of singularities according to a new invariant, Mather discrepancy. We also show some evidences convincing us that Mather discrepancy is a reasonable invariant in a view point of birational geometry.
Keywords: Singularities, arc space, minimal log-discrepancy
Mot clés : singularités, espaces d’arc, log-discrépance minimale
@article{AIF_2013__63_1_89_0, author = {Ishii, Shihoko}, title = {Mather discrepancy and the arc spaces}, journal = {Annales de l'Institut Fourier}, pages = {89--111}, publisher = {Association des Annales de l{\textquoteright}institut Fourier}, volume = {63}, number = {1}, year = {2013}, doi = {10.5802/aif.2756}, zbl = {06177077}, mrnumber = {3089196}, language = {en}, url = {http://www.numdam.org/articles/10.5802/aif.2756/} }
TY - JOUR AU - Ishii, Shihoko TI - Mather discrepancy and the arc spaces JO - Annales de l'Institut Fourier PY - 2013 SP - 89 EP - 111 VL - 63 IS - 1 PB - Association des Annales de l’institut Fourier UR - http://www.numdam.org/articles/10.5802/aif.2756/ DO - 10.5802/aif.2756 LA - en ID - AIF_2013__63_1_89_0 ER -
Ishii, Shihoko. Mather discrepancy and the arc spaces. Annales de l'Institut Fourier, Tome 63 (2013) no. 1, pp. 89-111. doi : 10.5802/aif.2756. http://www.numdam.org/articles/10.5802/aif.2756/
[1] On minimal log discrepancies, Math. Res. Lett., Volume 6 (1999) no. 5-6, pp. 573-580 | DOI | MR | Zbl
[2] Inversion of adjunction for non-degenerate hypersurfaces, Manuscripta Math., Volume 111 (2003) no. 1, pp. 43-49 | DOI | MR | Zbl
[3] Germs of arcs on singular algebraic varieties and motivic integration, Invent. Math., Volume 135 (1999) no. 1, pp. 201-232 | DOI | MR | Zbl
[4] Contact loci in arc spaces, Compos. Math., Volume 140 (2004) no. 5, pp. 1229-1244 | DOI | MR | Zbl
[5] Inversion of adjunction for local complete intersection varieties, Amer. J. Math., Volume 126 (2004) no. 6, pp. 1355-1365 | DOI | MR | Zbl
[6] Jet schemes and singularities, Algebraic geometry—Seattle 2005. Part 2 (Proc. Sympos. Pure Math.), Volume 80, Amer. Math. Soc., Providence, RI, 2009, pp. 505-546 | MR | Zbl
[7] Jet schemes, log discrepancies and inversion of adjunction, Invent. Math., Volume 153 (2003) no. 3, pp. 519-535 | DOI | MR | Zbl
[8] Jacobian discrepancies and rational singularities (2011) (preprint)
[9] Divisorial valuations via arcs, Publ. Res. Inst. Math. Sci., Volume 44 (2008) no. 2, pp. 425-448 (math.AG/0701867) | DOI | MR | Zbl
[10] Éléments de géométrie algébrique. IV. Étude locale des schémas et des morphismes de schémas. I, Inst. Hautes Études Sci. Publ. Math. (1964) no. 20, pp. 259 | Numdam | MR | Zbl
[11] Jet schemes, arc spaces and the Nash problem, C. R. Math. Acad. Sci. Soc. R. Can., Volume 29 (2007) no. 1, pp. 1-21 | MR | Zbl
[12] Maximal divisorial sets in arc spaces, Algebraic geometry in East Asia—Hanoi 2005 (Adv. Stud. Pure Math.), Volume 50, Math. Soc. Japan, Tokyo, 2008, pp. 237-249 | MR | Zbl
[13] The Nash problem on arc families of singularities, Duke Math. J., Volume 120 (2003) no. 3, pp. 601-620 | DOI | MR | Zbl
[14] Inversion of adjunction on log canonicity, Invent. Math., Volume 167 (2007) no. 1, pp. 129-133 | DOI | MR | Zbl
[15] On a comparison of minimal log discrepancies in terms of motivic integration, J. Reine Angew. Math., Volume 620 (2008), pp. 55-65 (mathAG/0608512) | MR | Zbl
[16] Differential algebra and algebraic groups, Academic Press, New York, 1973 (Pure and Applied Mathematics, Vol. 54) | MR | Zbl
[17] Problems about Fano varieties, Birational Geometry of Algebraic Varieties–Open Problems, Katata (1988), pp. 30-32
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