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pro vyhledávání: '"Henrik Eisenmann"'
Autor:
Arthur Bik, Henrik Eisenmann
Publikováno v:
Annali di Matematica Pura ed Applicata (1923 -). 201:2413-2464
A Jordan net (resp. web) is an embedding of a unital Jordan algebra of dimension $3$ (resp. $4$) into the space $\mathbb{S}^n$ of symmetric $n\times n$ matrices. We study the geometries of Jordan nets and webs: we classify the congruence-orbits of Jo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a85575d02ad000630f46c0ab72d3db7b
https://doi.org/10.1007/s10231-022-01204-y
https://doi.org/10.1007/s10231-022-01204-y
In this paper, we present modifications of the iterative hard thresholding (IHT) method for recovery of jointly row-sparse and low-rank matrices. In particular, a Riemannian version of IHT is considered which significantly reduces computational cost
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c73f8487e1cf9462b231d8e41f5419aa
Autor:
Henrik Eisenmann, André Uschmajew
It is shown that the relative distance in Frobenius norm of a real symmetric order-$d$ tensor of rank two to its best rank-one approximation is upper bounded by $\sqrt{1-(1-1/d)^{d-1}}$. This is achieved by determining the minimal possible ratio betw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89a489265e22e2dada738fa591cc7e55
The existence and uniqueness of weak solutions to dynamical low-rank evolution problems for parabolic partial differential equations in two spatial dimensions is shown, covering also non-diagonal diffusion in the elliptic part. The proof is based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f605aeb142d08da7e34842af516b54f
http://arxiv.org/abs/2002.12197
http://arxiv.org/abs/2002.12197