Erik Insko

activity

20112026

most citedAffine pavings of regular nilpotent Hessenberg varieties and intersection theory of the Peterson variety

7 citations · 22 across the 23 of their papers we have counts for

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Showing 2015Show all

3 papers · 1 filter

math.CO2015★ 3 cited

The $q$ -analog of Kostant's partition function and the highest root of the classical Lie algebras

Pamela E. Harris, Erik Insko, Mohamed Omar

Kostant's partition function counts the number of ways to represent a particular vector (weight) as a nonnegative integral sum of positive roots of a Lie algebra. For a given weigh…

math.CO2015

A Terrible Expansion of the Determinant

Erik Insko, Katie Johnson, Shaun Sullivan

From a transfer formula in multivariate finite operator calculus, comes an expansion for the determinant similar to Ryser's formula for the permanent. Although this one contains ma…

math.GR2015★ 6 cited

Peaks Sets of Classical Coxeter Groups

Alexander Diaz-Lopez, Pamela E. Harris, Erik Insko +1

We say a permutation $π = π_{1} π_{2} \dots π_{n}$ in the symmetric group $S_{n}$ has a peak at index $i$ if $π_{i - 1} < π_{i} > π_{i + 1}$ and we let $P(π)=\{i \in \{1, 2, \ldots, n\} \, \v…

The q-analog of Kostant's partition function and the highest root of the classical Lie algebras

A Terrible Expansion of the Determinant

Peaks Sets of Classical Coxeter Groups

The $q$ -analog of Kostant's partition function and the highest root of the classical Lie algebras