Let be a lattice of rank and let be its dual lattice. In this article we show that given two closed, bounded, full-dimensional convex sets , there is a canonical convex decomposition of the difference and we interpret the volume of the pieces geometrically in terms of intersection numbers of toric -divisors.
Revised:
Accepted:
Published online:
DOI: 10.5802/alco.55
Keywords: convex geometry, toric geometry, intersection theory
Botero, Ana M. 1
@article{ALCO_2019__2_4_585_0, author = {Botero, Ana M.}, title = {Canonical decomposition of a difference of convex sets}, journal = {Algebraic Combinatorics}, pages = {585--602}, publisher = {MathOA foundation}, volume = {2}, number = {4}, year = {2019}, doi = {10.5802/alco.55}, zbl = {1420.52005}, mrnumber = {3997512}, language = {en}, url = {https://alco.centre-mersenne.org/articles/10.5802/alco.55/} }
TY - JOUR AU - Botero, Ana M. TI - Canonical decomposition of a difference of convex sets JO - Algebraic Combinatorics PY - 2019 SP - 585 EP - 602 VL - 2 IS - 4 PB - MathOA foundation UR - https://alco.centre-mersenne.org/articles/10.5802/alco.55/ DO - 10.5802/alco.55 LA - en ID - ALCO_2019__2_4_585_0 ER -
Botero, Ana M. Canonical decomposition of a difference of convex sets. Algebraic Combinatorics, Volume 2 (2019) no. 4, pp. 585-602. doi : 10.5802/alco.55. https://alco.centre-mersenne.org/articles/10.5802/alco.55/
[1] Intersection theory of -divisors in toric varieties, J. Algebraic Geom. (2018) (Accepted) | MR
[2] Arithmetic geometry of toric varieties. Metrics, measures and heights, Astérisque, Société Mathématique de France, 2014 no. 360, vi+222 pages | MR | Zbl
[3] Toric Varieties, Graduate Studies in Mathematics, 124, Amer. Math. Soc., 2011 | MR | Zbl
[4] Introduction to Toric Varieties, Princeton Univ. Press, 1993
[5] Cell decomposition of polytopes by bending, Israel J. Math., Volume 64 (1988) no. 2, pp. 129-138 | DOI | MR | Zbl
[6] Principles of Algebraic Geometry, Bull. Amer. Math. Soc., Volume 2 (1980) no. 1, pp. 197-200 | MR
[7] Fundamentals of convex analysis, Grundlehren Text Editions, Springer, 2001 | DOI | Zbl
[8] Convex bodies and algebraic equations on affine varieties (2008) (https://arxiv.org/abs/0804.4095v1)
[9] Newton-Okounkov bodies, semigroups of integral points, graded algebras and intersection theory, Ann. of Math. (2), Volume 176 (2012) no. 2, pp. 925-978 | DOI | MR | Zbl
[10] Convex bodies and multiplicities of ideals, Proc. Steklov Inst. Math., Volume 286 (2014) no. 1, pp. 268-284 | DOI | MR | Zbl
[11] Convex bodies associated to linear series, Ann. Sci. Éc. Norm. Supér. (4), Volume 42 (2009) no. 5, pp. 783-835 | DOI | MR | Zbl
[12] Brunn–Minkowski inequality for multiplicities, Invent. Math., Volume 125 (1996) no. 3, pp. 405-411 | DOI | MR | Zbl
[13] Why would multiplicities be log-concave?, The orbit method in geometry and physics (Marseille, 2000) (Progr. Math.), Volume 213, Birkhäuser, Boston, 2003, pp. 329-347 | DOI | MR | Zbl
[14] Convex Analysis, Princeton Univ. Press, 1970 | DOI
[15] Convex bodies: The Brunn–Minkowski theory, Encyclopedia Math. Appl., 44, Cambridge University Press, 1993 | MR | Zbl
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