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Why Turing’s Computable Numbers Are Only Non-Constructively Closed Under Addition [PDF]

open access: yesEntropy
Kolmogorov complexity asks whether a string can be outputted by a Turing Machine (TM) whose description is shorter. Analogously, a real number is considered computable if a Turing machine can generate its decimal expansion.
Jeff Edmonds
doaj   +2 more sources

Matrix Analysis of Synchronous Boolean Networks [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2021
The synchronous Boolean network (SBN) is a simple and powerful model for describing, analyzing, and simulating cellular biological networks. This paper seeks a complete understanding of the dynamics of such a model by employing a matrix method that ...
Ali Muhammad Ali Rushdi   +1 more
doaj   +1 more source

The Global Form of Flavor Symmetries and 2-Group Symmetries in 5d SCFTs

open access: yesSciPost Physics, 2022
2-group symmetries arise when 1-form symmetries and 0-form symmetries of a theory mix with each other under group multiplication. We discover the existence of 2-group symmetries in 5d N=1 abelian gauge theories arising on the (non-extended) Coulomb ...
Fabio Apruzzi, Sakura Schafer-Nameki, Lakshya Bhardwaj, Jihwan Oh
doaj   +1 more source

Optimization of in vitro culture conditions affecting propagation of mulberry plant

open access: yesBulletin of the National Research Centre, 2020
Background Mulberry Morus spp. L. Family Moraceae is a perennial tree crop cultivated worldwide for foliage, fruit, fuel wood, and medicine, as well as for several other sericulture and industrial purposes.
Hussein Taha   +5 more
doaj   +1 more source

In vitro cloning of Bambusa vulgaris Schrad. ex J. C. Wendl.: Effect of culture systems, sucrose and activated charcoal supplementation

open access: yesAdvances in Bamboo Science, 2023
Fast-growing forest species with multiple uses, like bamboo, have aroused interest for their silvicultural applications. Bamboo species are a valuable source of renewable raw material, and Bambusa vulgaris is an economically important species.
Douglas Santos Gonçalves   +5 more
doaj   +1 more source

The Quantization of Gravity: Quantization of the Hamilton Equations

open access: yesUniverse, 2021
We quantize the Hamilton equations instead of the Hamilton condition. The resulting equation has the simple form −Δu=0 in a fiber bundle, where the Laplacian is the Laplacian of the Wheeler–DeWitt metric provided n≠4.
Claus Gerhardt
doaj   +1 more source

LikeN's - a point of view on natural numbers

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2017
We define and study some simple structures which we call likens and which are conceptually near to both sets of natural numbers, i.e. N with addition and N*=N\{0} with multiplication.
Edward Tutaj
doaj   +1 more source

On product sets of arithmetic progressions

open access: yesDiscrete Analysis, 2023
On product sets of arithmetic progressions, Discrete Analysis 2023:10, 31 pp. The _multiplication table problem_ is a very simply stated question of Erdős: how many numbers appear in the multiplication table of the numbers from 1 to $n$?
Max Wenqiang Xu, Yunkun Zhou
doaj   +1 more source

Micropropagation of Incarvillea delavayi Bureau et Franchet (Bignoniaceae)

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2019
A simple and efficient protocol for micropropagation of Incarvillea delavayi (Bignoniaceae), an ornamental plant from China, was developed in this study. As initial plant material, adventitious shoots were used.
Tomáš Hovorka   +4 more
doaj   +1 more source

Geometric rank of tensors and subrank of matrix multiplication

open access: yesDiscrete Analysis, 2023
Geometric rank of tensors and subrank of matrix multiplication, Discrete Analysis 2023:1, 25 pp. The rank of a matrix is a parameter of obvious importance, so it is natural to wonder what the right definition is for the rank of a higher-dimensional ...
Swastik Kopparty   +2 more
doaj   +1 more source

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