Results 11 to 20 of about 55,098 (316)

On Column-Convex and Convex Carlitz Polyominoes [PDF]

open access: yesMathematics in Computer Science, 2021
In this paper, we introduce and study {\it Carlitz polyominoes}. In particular, we show that, as $n$ grows to infinity, asymptotically the number of \begin{enumerate} \item column-convex Carlitz polyominoes with perimeter $2n$ is \beq \frac{9\sqrt{2}(14+3\sqrt{3})}{2704\sqrt{πn^3}}4^n.
Toufik Mansour   +2 more
openaire   +2 more sources

Triangulability of convex graphs and convex skewness [PDF]

open access: yesDiscrete Mathematics, Algorithms and Applications, 2021
Suppose [Formula: see text] is a subgraph of a convex complete graph [Formula: see text] and [Formula: see text] contains no boundary edge of [Formula: see text] and [Formula: see text]. We determine necessary and sufficient conditions on [Formula: see text] such that [Formula: see text] admits a triangulation.
Niran Abbas Ali   +3 more
openaire   +3 more sources

Degree of facial profile convexity using Subtelny’s analysis in patients aged 6 to 12 years

open access: yesMajalah Kedokteran Gigi Indonesia, 2023
Skeletal malocclusion is caused by a disproportion of the maxilla and mandible, which leads to an unharmonious facial profile. Straight, convex, and concave soft tissue profiles may serve as a guide to determine the underlying skeletal relations and ...
Vanessa Dominique, Riko Nofrizal
doaj   +1 more source

Three-dimensional Point Cloud Model Segmentation Based on Significance and Weak Convexity [PDF]

open access: yesJisuanji gongcheng, 2018
The existing three-dimensional point cloud model segmentation algorithms cannot segment large components and small components at the same time.Aiming at this problem,in this paper,a segmentation method is proposed based on the significance and weak ...
ZHENG Lele,HAN Huiyan,HAN Xie
doaj   +1 more source

Seed Morphological Properties Related to Taxonomy in Silene L. Species

open access: yesTaxonomy, 2022
Silene taxonomy, traditionally based on morphological characteristics, is now driven by DNA sequence analysis. While the usefulness of both morphological and molecular methods remains undisputed, there is an interest in the identification of the ...
José Javier Martín-Gómez   +5 more
doaj   +1 more source

Facial soft tissue convexity changes [PDF]

open access: yesAl-Rafidain Dental Journal, 2007
Aims: To find the soft tissue changes of the total facial convexity, facial convexity and nasolabial convexity among four age groups. Materials and Methods: The studying sample subjects included 48, 41, 50 and 44 individuals of age 11, 12, 13 and 14 ...
Hussain A Obaidi, Manar Y Abdul–Qadir
doaj   +1 more source

A topological model for partial equivariance in deep learning and data analysis

open access: yesFrontiers in Artificial Intelligence, 2023
In this article, we propose a topological model to encode partial equivariance in neural networks. To this end, we introduce a class of operators, called P-GENEOs, that change data expressed by measurements, respecting the action of certain sets of ...
Lucia Ferrari   +3 more
doaj   +1 more source

Damped Newton Stochastic Gradient Descent Method for Neural Networks Training

open access: yesMathematics, 2021
First-order methods such as stochastic gradient descent (SGD) have recently become popular optimization methods to train deep neural networks (DNNs) for good generalization; however, they need a long training time.
Jingcheng Zhou   +3 more
doaj   +1 more source

A convex polynomial that is not sos-convex [PDF]

open access: yesMathematical Programming, 2011
15 ...
Amir Ali Ahmadi, Pablo A. Parrilo
openaire   +2 more sources

Terracini convexity [PDF]

open access: yesMathematical Programming, 2022
AbstractWe present a generalization of the notion of neighborliness to non-polyhedral convex cones. Although a definition of neighborliness is available in the non-polyhedral case in the literature, it is fairly restrictive as it requires all the low-dimensional faces to be polyhedral.
James Saunderson, Venkat Chandrasekaran
openaire   +4 more sources

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