Zobrazeno 1 - 10
of 1 309
pro vyhledávání: '"A. Turatti"'
Autor:
Wives, Ana Paula, Mendes, Isabelli Seiler de Medeiros, Santos, Sofia Turatti dos, Bonatto, Diego
D-xylose is the second most abundant monosaccharide found in lignocellulose and is of biotechnological importance for producing second-generation ethanol and other high-value chemical compounds. D-xylose conversion to ethanol is promoted by microbial
Externí odkaz:
http://arxiv.org/abs/2405.11010
Publikováno v:
Journal of Algebra, Volume 661, 1 January 2025, Pages 641-656
Let $f$ be a homogeneous polynomial of even degree $d$. We study the decompositions $f=\sum_{i=1}^r f_i^2$ where $\mathrm{deg} f_i=d/2$. The minimal number of summands $r$ is called the $2$-rank of $f$, so that the polynomials having $2$-rank equal t
Externí odkaz:
http://arxiv.org/abs/2402.05189
After a few results on curves, we characterize the smallest nonempty Terracini loci of Veronese and Segre-Veronese varieties. For del Pezzo surfaces, we give a full description of the Terracini loci. Moreover, we present an algorithm to explicitly co
Externí odkaz:
http://arxiv.org/abs/2311.09067
We lay the geometric foundations for the study of the characteristic polynomial of tensors. For symmetric tensors of order $d \geq 3$ and dimension $2$ and symmetric tensors of order $3$ and dimension $3$, we prove that only finitely many tensors sha
Externí odkaz:
http://arxiv.org/abs/2308.10957
Autor:
Sebastian Vernal, Tamiris Amanda Julio, Fernando Henrique Alves, Aline Turatti, Eduardo Antonio Donadi, Ana Maria Roselino
Publikováno v:
Anais Brasileiros de Dermatologia, Vol 99, Iss 5, Pp 680-687 (2024)
Abstract Background Anti-desmoglein (Dsg)1 is produced in pemphigus foliaceus (PF), affecting exclusively the skin. Pemphigus vulgaris (PV) shows the production of anti-Dsg3 in the mucosal form, and anti-Dsg1 and 3 in the mucocutaneous form. Anti-Dsg
Externí odkaz:
https://doaj.org/article/44e6b71151ac4cbf8ce30d47debfe14a
One of the most important hyper-parameters in duration-dependent Markov-switching (DDMS) models is the duration of the hidden states. Because there is currently no procedure for estimating this duration or testing whether a given duration is appropri
Externí odkaz:
http://arxiv.org/abs/2307.01405
Subtracting a critical rank-one approximation from a matrix always results in a matrix with a lower rank. This is not true for tensors in general. Motivated by this, we ask the question: what is the closure of the set of those tensors for which subtr
Externí odkaz:
http://arxiv.org/abs/2303.14985
Autor:
M.V.O. Vespúcio, A. Turatti, P. Modiano, E.C. de Oliveira, S.R.M. Chicote, A.M.P. Pinto, S.B. Garcia
Publikováno v:
Brazilian Journal of Medical and Biological Research, Vol 41, Iss 4, Pp 311-317 (2008)
Denervation of the colon is protective against the colon cancer; however, the mechanisms involved are unknown. We tested the hypothesis that the denervated colonic mucosa could be less responsive to the action of the chemical carcinogen dimethylhydra
Externí odkaz:
https://doaj.org/article/0555e4141000459db5b47d178130a230
A singular $k$-tuple of a tensor $T$ of format $(n_1,\ldots,n_k)$ is essentially a complex critical point of the distance function from $T$ constrained to the cone of tensors of format $(n_1,\ldots,n_k)$ of rank at most one. A generic tensor has fini
Externí odkaz:
http://arxiv.org/abs/2206.08606
Publikováno v:
Journal of Pure and Applied Algebra, Volume 228, Number 7, 2024
We study the problem of how many different sums of squares decompositions a general polynomial $f$ with SOS-rank $k$ admits. We show that there is a link between the variety $\mathrm{SOS}_k(f)$ of all SOS-decompositions of $f$ and the orthogonal grou
Externí odkaz:
http://arxiv.org/abs/2206.07473