On the real X -ranks of points of n ( ) with respect to a real variety X n

Edoardo Ballico

Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica (2010)

  • Volume: 54, Issue: 2
  • ISSN: 0365-1029

Abstract

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Let  X n be an integral and non-degenerate m -dimensional variety defined over . For any P n ( ) the real X -rank r X , ( P ) is the minimal cardinality of S X ( ) such that P S . Here we extend to the real case an upper bound for the X -rank due to Landsberg and Teitler.

How to cite

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Edoardo Ballico. "On the real $X$-ranks of points of $\mathbb {P}^n(\mathbb {R})$ with respect to a real variety $X\subset \mathbb {P}^n$." Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica 54.2 (2010): null. <http://eudml.org/doc/289848>.

@article{EdoardoBallico2010,
abstract = {Let $X\subset \mathbb \{P\}^n$ be an integral and non-degenerate $m$-dimensional variety defined over $\mathbb \{R\}$. For any $P \in ~\mathbb \{P\}^n(\mathbb \{R\})$ the real $X$-rank $r_\{X,\mathbb \{R\}\}(P)$ is the minimal cardinality of $S\subset X(\mathbb \{R\})$ such that $P\in \langle S\rangle $. Here we extend to the real case an upper bound for the $X$-rank due to Landsberg and Teitler.},
author = {Edoardo Ballico},
journal = {Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica},
keywords = {Ranks; real variety; structured rank},
language = {eng},
number = {2},
pages = {null},
title = {On the real $X$-ranks of points of $\mathbb \{P\}^n(\mathbb \{R\})$ with respect to a real variety $X\subset \mathbb \{P\}^n$},
url = {http://eudml.org/doc/289848},
volume = {54},
year = {2010},
}

TY - JOUR
AU - Edoardo Ballico
TI - On the real $X$-ranks of points of $\mathbb {P}^n(\mathbb {R})$ with respect to a real variety $X\subset \mathbb {P}^n$
JO - Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica
PY - 2010
VL - 54
IS - 2
SP - null
AB - Let $X\subset \mathbb {P}^n$ be an integral and non-degenerate $m$-dimensional variety defined over $\mathbb {R}$. For any $P \in ~\mathbb {P}^n(\mathbb {R})$ the real $X$-rank $r_{X,\mathbb {R}}(P)$ is the minimal cardinality of $S\subset X(\mathbb {R})$ such that $P\in \langle S\rangle $. Here we extend to the real case an upper bound for the $X$-rank due to Landsberg and Teitler.
LA - eng
KW - Ranks; real variety; structured rank
UR - http://eudml.org/doc/289848
ER -

References

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  1. Albera, L., Chevalier, P., Comon, P. and Ferreol, A., On the virtual array concept for higher order array processing, IEEE Trans. Signal Process. 53(4) (2005), 1254-1271. 
  2. Arbarello, E., Cornalba, M., Griffiths, P. and Harris, J., Geometry of Algebraic Curves. I, Springer-Verlag, New York, 1985. 
  3. Ballico, E., Ranks of subvarieties of Pn over non-algebraically closed fields, Int. J. Pure Appl. Math. 61(1) (2010), 7-10. 
  4. Ballico, E., Subsets of the variety X n computing the X -rank of a point of n , preprint. 
  5. Bernardi, A., Gimigliano, A. and Ida, M., Computing symmetric rank for symmetric tensors, J. Symbolic Comput. 46 (2011), 34-55. 
  6. Bochnak, J., Coste, M. and Roy, F.-M., Real Algebraic Geometry, Translated from the 1987 French original. Revised by the authors. Ergebnisse der Mathematik und ihrer Grenzgebiete (3) [Results in Mathematics and Related Areas (3)], 36, Springer-Verlag, Berlin, 1998. 
  7. Buczynski, J., Landsberg, J. M., Ranks of tensors and a generalization of secant varieties, arXiv:0909.4262v1 [math.AG]. 
  8. Comas, G., Seiguer, M., On the rank of a binary form, arXiv:math.AG/0112311. 
  9. Comon, P., Golub, G., Lim, L.-H. and Mourrain, B., Symmetric tensors and symmetric tensor rank, SIAM J. Matrix Anal. Appl. 30(3) (2008), 1254-1279. 
  10. Hartshorne, R., Algebraic Geometry, Springer-Verlag, Berlin, 1977. 
  11. Landsberg, J. M., Teitler, Z., On the ranks and border ranks of symmetric tensors, Found. Comput. Math. 10 (2010), 339-366. 
  12. Lang, S., Algebra, Addison-Wesley Publishing Co., Inc., Reading, Mass., 1965. 

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