64 citations · 346 across the 53 of their papers we have counts for
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Algebraicity of the Brascamp-Lieb constants
Calin Chindris, Harm Derksen
We show that the Brascamp-Lieb (BL) constant BL(-,p) is a semi-algebraic function on the set of feasible data. Consequently, it is algebraic in the sense that it satisfies a polyno…
Polystability in positive characteristic and degree lower bounds for invariant rings
Harm Derksen, Visu Makam
We develop a representation theoretic technique for detecting closed orbits that is applicable in all characteristics. Our technique is based on Kempf's theory of optimal subgroups…
Maximum likelihood estimation for matrix normal models via quiver representations
Harm Derksen, Visu Makam
In this paper, we study the log-likelihood function and Maximum Likelihood Estimate (MLE) for the matrix normal model for both real and complex models. We describe the exact number…
Algebraic Methods for Tensor Data
Neriman Tokcan, Jonathan Gryak, Kayvan Najarian +1
We develop algebraic methods for computations with tensor data. We give 3 applications: extracting features that are invariant under the orthogonal symmetries in each of the modes,…
Invariant theory and wheeled PROPs
Harm Derksen, Visu Makam
We study the category of wheeled PROPs using tools from Invariant Theory. A typical example of a wheeled PROP is the mixed tensor algebra , whe…
The capacity of quiver representations and Brascamp-Lieb constants
Calin Chindris, Harm Derksen
Let be a bipartite quiver, a real representation of , and an integral weight of orthogonal to the dimension vector of . Guided by quiver invariant theoretic c…