Permanent Versus Determinant, Obstructions, and Kronecker Coefficients
Séminaire lotharingien de combinatoire, Tome 75 (2016-2019)

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We give an introduction to some of the recent ideas that go under the name "geometric complexity theory". We first sketch the proof of the known upper and lower bounds for the determinantal complexity of the permanent. We then introduce the concept of a representation theoretic obstruction, which has close links to algebraic combinatorics, and we explain some of the insights gained so far. In particular, we address very recent insights on the complexity of testing the positivity of Kronecker coefficients. We also briefly discuss the related asymptotic version of this question.

@article{SLC_2016-2019_75_a0,
     author = {Peter B\"urgisser},
     title = {Permanent {Versus} {Determinant,} {Obstructions,} and {Kronecker} {Coefficients}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {75},
     year = {2016-2019},
     url = {http://geodesic.mathdoc.fr/item/SLC_2016-2019_75_a0/}
}
TY  - JOUR
AU  - Peter Bürgisser
TI  - Permanent Versus Determinant, Obstructions, and Kronecker Coefficients
JO  - Séminaire lotharingien de combinatoire
PY  - 2016-2019
VL  - 75
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SLC_2016-2019_75_a0/
ID  - SLC_2016-2019_75_a0
ER  - 
%0 Journal Article
%A Peter Bürgisser
%T Permanent Versus Determinant, Obstructions, and Kronecker Coefficients
%J Séminaire lotharingien de combinatoire
%D 2016-2019
%V 75
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SLC_2016-2019_75_a0/
%F SLC_2016-2019_75_a0
Peter Bürgisser. Permanent Versus Determinant, Obstructions, and Kronecker Coefficients. Séminaire lotharingien de combinatoire, Tome 75 (2016-2019). http://geodesic.mathdoc.fr/item/SLC_2016-2019_75_a0/