activity
20172020
most citedEstimating linear covariance models with numerical nonlinear algebra

24 citations · 34 across the 5 of their papers we have counts for

collaborators

9 papers

math.AG2020★ 6 cited

Certifying zeros of polynomial systems using interval arithmetic

Paul Breiding, Kemal Rose, Sascha Timme

We establish interval arithmetic as a practical tool for certification in numerical algebraic geometry. Our software HomotopyContinuation.jl now has a built-in function certify, wh…

math.MG2020

Catastrophe in Elastic Tensegrity Frameworks

Alexander Heaton, Sascha Timme

We discuss elastic tensegrity frameworks made from rigid bars and elastic cables, depending on many parameters. For any fixed parameter values, the stable equilibrium position of t…

math.CO2020

Polymake.jl: A new interface to polymake

Marek Kaluba, Benjamin Lorenz, Sascha Timme

We present the Julia interface Polymake.jl to polymake, a software for research in polyhedral geometry. We describe the technical design and how the integration into Julia makes it…

math.NA2020

Backward Error Measures for Roots of Polynomials

Simon Telen, Sascha Timme, Marc Van Barel

We analyze different measures for the backward error of a set of numerical approximations for the roots of a polynomial. We focus mainly on the element-wise mixed backward error in…

math.AG2019★ 1 cited

96120: The degree of the linear orbit of a cubic surface

Laura Brustenga i Moncusí, Sascha Timme, Madeleine Weinstein

The projective linear group \(\pgl(\comp,4)\) acts on cubic surfaces, considered as points of . We compute the degree of the -dimensional projecti…

stat.CO2019★ 24 cited

Estimating linear covariance models with numerical nonlinear algebra

Bernd Sturmfels, Sascha Timme, Piotr Zwiernik

Numerical nonlinear algebra is applied to maximum likelihood estimation for Gaussian models defined by linear constraints on the covariance matrix. We examine the generic case as w…