10 citations · 42 across the 22 of their papers we have counts for
24 papers
Examples of non-tame abstract elementary classes of abelian groups
Daniel Herden, Marcos Mazari-Armida, Michael D. Walton
We construct an abstract elementary class of torsion-free abelian groups such that is not -tame but is -tame. This answers a question of [BoVa17]…
An unstable abstract elementary class of modules: A variation of Paolini-Shelah's example
Daniel Herden, Marcos Mazari-Armida, Michael D. Walton
We construct a class of torsion-free abelian groups such that is an abstract elementary class with $\operatorname{LS}(\hat{\mathbf{K}…
The partial derivative of ratios of Schur polynomials and applications to symplectic quotients
Hans-Christian Herbig, Daniel Herden, Harper Kolehmainen +1
We show that a ratio of Schur polynomials associated to partitions and such that has a negative partial derivative at any point where all variables…
On groups well represented as automorphism groups of groups
Mohsen Asgharzadeh, Mohammad Golshani, Daniel Herden +1
Assuming Gödel's axiom of constructibility we present a characterization of those groups for which there exist arbitrarily large groups such that $aut(H)…
A symmetric function approach to polynomial regression
Hans-Christian Herbig, Daniel Herden, Christopher Seaton
We give an explicit solution formula for the polynomial regression problem in terms of Schur polynomials and Vandermonde determinants. We thereby generalize the work of Chang, Deng…
Young tableau reconstruction via minors
William Q. Erickson, Daniel Herden, Jonathan Meddaugh +4
The tableau reconstruction problem, posed by Monks (2009), asks the following. Starting with a standard Young tableau , a 1-minor of is a tableau obtained by first deleting…