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L. Gemignani

4 papers hereh-index 211.5k citations126 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • first author1
  • last author2

Across the 3 of 4 papers where every author was matched, so the position is known.

fields
  • math.NA4

identity via Semantic Scholar / OpenAlex

activity
20182021
collaborators

4 papers

math.NA2021

Orthogonal iterations on Structured Pencils

Roberto Bevilacqua, Gianna M. Del Corso, Luca Gemignani

We present a class of fast subspace tracking algorithms based on orthogonal iterations for structured matrices/pencils that can be represented as small rank perturbations of unitar…

math.NA2020

Bezout-like polynomial equations associated with dual univariate interpolating subdivision schemes

Luca Gemignani, Lucia Romani, Alberto Viscardi

The algebraic characterization of dual univariate interpolating subdivision schemes is investigated. Specifically, we provide a constructive approach for finding dual univariate in…

math.NA2019

Efficient Reduction of Compressed Unitary plus Low-rank Matrices to Hessenberg form

Roberto Bevilacqua, Gianna M. Del Corso, Luca Gemignani

We present fast numerical methods for computing the Hessenberg reduction of a unitary plus low-rank matrix A=G+UVH, where G∈Cn×n is a unitary matrix repre…

math.NA2018

Fast QR iterations for unitary plus low rank matrices

Roberto Bevilacqua, Gianna M. Del Corso, Luca Gemignani

Some fast algorithms for computing the eigenvalues of a block companion matrix A=U+XYH, where U∈Cn×n is unitary block circulant and $X, Y \in\mathbb{C}…

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