The combinatorics of discrete time-trees: theory and open problems
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Mathematical Biology"
DOI: 10.1007/s00285-017-1167-9
Abstract: A time-tree is a rooted phylogenetic tree such that all internal nodes are equipped with absolute divergence dates and all leaf nodes are equipped with sampling dates. Such time-trees have become a central object of… read more here.
Keywords: graphs; time trees; time; graph ... See more keywords
To add or to multiply in open problems? Unraveling children’s relational preference using a mixed-method approach
Sign Up to like & getrecommendations! Published in 2020 at "Educational Studies in Mathematics"
DOI: 10.1007/s10649-020-09966-z
Abstract: Previous research demonstrated that some children inappropriately solve multiplicative missing-value word problems additively, while others inappropriately solve additive missing-value word problems multiplicatively. Besides lacking skills, children’s preference for additive or multiplicative relations has been shown… read more here.
Keywords: preference; relational preference; using mixed; method approach ... See more keywords
Trends, directions for further research, and some open problems of fractional calculus
Sign Up to like & getrecommendations! Published in 2022 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-021-07158-9
Abstract: The area of fractional calculus (FC) has been fast developing and is presently being applied in all scientific fields. Therefore, it is of key relevance to assess the present state of development and to foresee,… read more here.
Keywords: directions research; fractional calculus; research open; trends directions ... See more keywords
Ordered Banach algebras and multi-norms: some open problems
Sign Up to like & getrecommendations! Published in 2017 at "Positivity"
DOI: 10.1007/s11117-017-0488-7
Abstract: This is a list of open problems posed at the workshop on Ordered Banach Algebras held at the Lorentz Center, Leiden, during the week 21–25 July, 2014. read more here.
Keywords: ordered banach; multi norms; banach algebras; open problems ... See more keywords
Peer-to-peer energy sharing in mobile networks: Applications, challenges, and open problems
Sign Up to like & getrecommendations! Published in 2020 at "Ad Hoc Networks"
DOI: 10.1016/j.adhoc.2019.102029
Abstract: Abstract Energy is a scarce resource in mobile wireless networks that consist of devices mainly powered by their batteries. Providing energy ubiquitously to these devices for making them functional for a long time is a… read more here.
Keywords: peer peer; energy; peer energy; energy sharing ... See more keywords
Two open problems of Day and Wong on left thick subsets and left amenability
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mathematical Analysis and Applications"
DOI: 10.1016/j.jmaa.2017.03.070
Abstract: Abstract This paper answers two open problems raised by Mahlon M. Day [4] and James C.S. Wong [17] : Does uniformly topological left amenability imply the existence of left translation continuous measures on a locally… read more here.
Keywords: left amenability; two open; locally compact; amenability ... See more keywords
Open problems and issues in optimal design
Sign Up to like & getrecommendations! Published in 2018 at "Quality Engineering"
DOI: 10.1080/08982112.2018.1517884
Abstract: Abstract In recent years, there has been an increasing emphasis in the design of experiments literature on optimal design. Many authors have recommended that optimal design of experiments should be used in lieu of classical… read more here.
Keywords: design experiments; problems issues; issues optimal; optimal design ... See more keywords
Open problems, questions and challenges in finite- dimensional integrable systems
Sign Up to like & getrecommendations! Published in 2018 at "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences"
DOI: 10.1098/rsta.2017.0430
Abstract: The paper surveys open problems and questions related to different aspects of integrable systems with finitely many degrees of freedom. Many of the open problems were suggested by the participants of the conference ‘Finite-dimensional Integrable… read more here.
Keywords: questions challenges; finite dimensional; integrable systems; problems questions ... See more keywords
A Survey on Offline Reinforcement Learning: Taxonomy, Review, and Open Problems
Sign Up to like & getrecommendations! Published in 2022 at "IEEE transactions on neural networks and learning systems"
DOI: 10.1109/tnnls.2023.3250269
Abstract: With the widespread adoption of deep learning, reinforcement learning (RL) has experienced a dramatic increase in popularity, scaling to previously intractable problems, such as playing complex games from pixel observations, sustaining conversations with humans, and… read more here.
Keywords: survey offline; reinforcement learning; offline reinforcement; review ... See more keywords
Two Open Problems on CA-Groupoids and Cancellativities of T2CA-Groupoids
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DOI: 10.3390/axioms11040169
Abstract: Cyclic associative groupoids (CA-groupoids) and Type-2 cyclic associative groupoids (T2CA-groupoids) are two types of non-associative groupoids which satisfy cyclic associative law and type-2 cyclic associative law, respectively. In this paper, we prove two theorems that… read more here.
Keywords: cyclic associative; cancellativity; quasi cancellativity; two open ... See more keywords