Subjects -> MATHEMATICS (Total: 1013 journals)     - APPLIED MATHEMATICS (92 journals)    - GEOMETRY AND TOPOLOGY (23 journals)    - MATHEMATICS (714 journals)    - MATHEMATICS (GENERAL) (45 journals)    - NUMERICAL ANALYSIS (26 journals)    - PROBABILITIES AND MATH STATISTICS (113 journals) MATHEMATICS (714 journals)            First | 1 2 3 4 | Last
 Showing 201 - 400 of 538 Journals sorted alphabetically Educação Matemática Debate Edumatica : Jurnal Pendidikan Matematika EduMatSains Electronic Journal of Differential Equations Electronic Journal of Graph Theory and Applications       (Followers: 3) Em Teia : Revista de Educação Matemática e Tecnológica Iberoamericana Emergent Scientist Energy for Sustainable Development       (Followers: 13) Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas Entropy       (Followers: 5) ESAIM: Control Optimisation and Calculus of Variations       (Followers: 2) Euclid European Journal of Applied Mathematics European Journal of Combinatorics       (Followers: 3) European Journal of Mathematics       (Followers: 1) European Scientific Journal       (Followers: 1) Examples and Counterexamples Experimental Mathematics       (Followers: 5) Expositiones Mathematicae       (Followers: 2) Extracta Mathematicae Facta Universitatis, Series : Mathematics and Informatics Finite Fields and Their Applications       (Followers: 5) Fixed Point Theory and Applications Formalized Mathematics Forum of Mathematics, Pi       (Followers: 1) Forum of Mathematics, Sigma       (Followers: 1) Foundations and Trends® in Econometrics       (Followers: 6) Foundations and Trends® in Networking       (Followers: 1) Foundations and Trends® in Stochastic Systems       (Followers: 1) Foundations and Trends® in Theoretical Computer Science       (Followers: 1) Foundations of Computational Mathematics Fractal and Fractional Fractals       (Followers: 1) Frontiers of Mathematics in China Fuel Cells Bulletin       (Followers: 9) Functional Analysis and Other Mathematics       (Followers: 4) Fundamental Journal of Mathematics and Applications Funktsional'nyi Analiz i ego Prilozheniya Fuzzy Optimization and Decision Making       (Followers: 8) Game Theory       (Followers: 2) Games       (Followers: 4) Games and Economic Behavior       (Followers: 25) Gamm - Mitteilungen GANIT : Journal of Bangladesh Mathematical Society GEM - International Journal on Geomathematics       (Followers: 1) General Mathematics Glasgow Mathematical Journal Global Journal of Mathematical Sciences Graphs and Combinatorics       (Followers: 4) Grey Systems : Theory and Application Groups, Complexity, Cryptology       (Followers: 2) GSTF Journal of Mathematics, Statistics and Operations Research       (Followers: 1) Historia Mathematica Historical Methods: A Journal of Quantitative and Interdisciplinary History       (Followers: 28) IMA Journal of Applied Mathematics IMA Journal of Numerical Analysis - advance access ImmunoInformatics       (Followers: 1) Indagationes Mathematicae Indian Journal of Pure and Applied Mathematics       (Followers: 4) Indonesian Journal of Combinatorics Indonesian Journal of Science and Mathematics Education       (Followers: 1) Infinite Dimensional Analysis, Quantum Probability and Related Topics       (Followers: 1) Infinity Jurnal Matematika dan Aplikasinya       (Followers: 3) Information and Inference InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan InfraMatics Insight - Non-Destructive Testing and Condition Monitoring       (Followers: 110) International Electronic Journal of Algebra International Journal for Numerical Methods in Engineering       (Followers: 35) International Journal for Numerical Methods in Fluids       (Followers: 19) International Journal of Advanced Mathematical Sciences International Journal of Advanced Mechatronic Systems       (Followers: 2) International Journal of Advanced Research in Mathematics International Journal of Advances in Engineering Sciences and Applied Mathematics       (Followers: 10) International Journal of Algebra and Computation       (Followers: 1) International Journal of Algebra and Statistics       (Followers: 3) International Journal of Applied and Computational Mathematics International Journal of Applied Mathematical Research       (Followers: 1) International Journal of Applied Mathematics and Computer Science       (Followers: 7) International Journal of Applied Mechanics       (Followers: 8) International Journal of Applied Nonlinear Science International Journal of Autonomic Computing       (Followers: 1) International Journal of Bifurcation and Chaos       (Followers: 4) International Journal of Biomathematics       (Followers: 2) International Journal of Computational Complexity and Intelligent Algorithms International Journal of Computational Economics and Econometrics       (Followers: 6) International Journal of Computational Geometry and Applications       (Followers: 2) International Journal of Computational Intelligence and Applications       (Followers: 2) International Journal of Computational Methods       (Followers: 4) International Journal of Computer Processing Of Languages       (Followers: 1) International Journal of Control, Automation and Systems       (Followers: 15) International Journal of Dynamical Systems and Differential Equations       (Followers: 1) International Journal of Economics and Accounting       (Followers: 1) International Journal of Foundations of Computer Science       (Followers: 3) International Journal of Fuzzy Computation and Modelling       (Followers: 2) International Journal of Image and Graphics       (Followers: 5) International Journal of Industrial Electronics and Drives       (Followers: 3) International Journal of Low-Carbon Technologies       (Followers: 1) International Journal of Mathematical Education in Science and Technology       (Followers: 9) International Journal of Mathematical Modelling & Computations       (Followers: 3) International Journal of Mathematical Modelling and Numerical Optimisation       (Followers: 5) International Journal of Mathematical Sciences and Computing International Journal of Mathematics       (Followers: 4) International Journal of Mathematics & Computation International Journal of Mathematics and Mathematical Sciences       (Followers: 4) International Journal of Mathematics in Operational Research       (Followers: 2) International Journal of Metaheuristics       (Followers: 1) International Journal of Modelling in Operations Management       (Followers: 2) International Journal of Modern Nonlinear Theory and Application       (Followers: 1) International Journal of Number Theory       (Followers: 1) International Journal of Partial Differential Equations       (Followers: 2) International Journal of Polymer Science       (Followers: 25) International Journal of Pure Mathematical Sciences International Journal of Reliability, Quality and Safety Engineering       (Followers: 14) International Journal of Research in Undergraduate Mathematics Education       (Followers: 4) International Journal of Sediment Research       (Followers: 2) International Journal of Shape Modeling       (Followers: 1) International Journal of Theoretical and Mathematical Physics       (Followers: 13) International Journal of Trends in Mathematics Education Research       (Followers: 4) International Journal of Ultra Wideband Communications and Systems International Journal of Wavelets, Multiresolution and Information Processing International Journal on Artificial Intelligence Tools       (Followers: 9) International Mathematics Research Notices       (Followers: 1) Internet Mathematics       (Followers: 1) Inventiones mathematicae       (Followers: 2) Inverse Problems in Science and Engineering       (Followers: 3) Investigations in Mathematics Learning Iranian Journal of Optimization       (Followers: 2) Israel Journal of Mathematics Ithaca : Viaggio nella Scienza ITM Web of Conferences Izvestiya Rossiiskoi Akademii Nauk. Seriya Matematicheskaya Jahresbericht der Deutschen Mathematiker-Vereinigung Japan Journal of Industrial and Applied Mathematics Japanese Journal of Mathematics JIPM (Jurnal Ilmiah Pendidikan Matematika) JMPM : Jurnal Matematika dan Pendidikan Matematika JOHME : Journal of Holistic Mathematics Education       (Followers: 2) Johnson Matthey Technology Review Jornal Internacional de Estudos em Educação Matemática Journal d'Analyse Mathématique       (Followers: 2) Journal de Mathématiques Pures et Appliquées       (Followers: 3) Journal for Research in Mathematics Education       (Followers: 28) Journal für Mathematik-Didaktik Journal of Advanced Mathematics and Applications       (Followers: 1) Journal of Algebra       (Followers: 3) Journal of Algebra and Its Applications       (Followers: 3) Journal of Algebraic Combinatorics       (Followers: 3) Journal of Algorithms & Computational Technology Journal of Applied Mathematics       (Followers: 3) Journal of Applied Mathematics and Computing Journal of Applied Mathematics, Statistics and Informatics       (Followers: 1) Journal of Artificial Intelligence and Data Mining       (Followers: 10) Journal of Classification       (Followers: 5) Journal of Combinatorial Designs       (Followers: 4) Journal of Combinatorial Optimization       (Followers: 7) Journal of Combinatorial Theory, Series A       (Followers: 5) Journal of Combinatorial Theory, Series B       (Followers: 3) Journal of Complex Analysis       (Followers: 2) Journal of Complex Networks       (Followers: 1) Journal of Complexity       (Followers: 6) Journal of Computational and Applied Mathematics       (Followers: 6) Journal of Computational Biology       (Followers: 9) Journal of Computational Mathematics and Data Science Journal of Computational Multiphase Flows       (Followers: 1) Journal of Computational Physics       (Followers: 59) Journal of Computational Physics : X       (Followers: 1) Journal of Computer Engineering, System and Science (CESS) Journal of Contemporary Mathematical Analysis Journal of Cryptology       (Followers: 5) Journal of Difference Equations and Applications Journal of Differential Equations       (Followers: 1) Journal of Discrete Mathematics       (Followers: 1) Journal of Dynamics and Differential Equations Journal of Engineering Mathematics       (Followers: 2) Journal of Evolution Equations Journal of Experimental Algorithmics Journal of Flood Risk Management       (Followers: 14) Journal of Function Spaces Journal of Functional Analysis       (Followers: 3) Journal of Geochemical Exploration       (Followers: 4) Journal of Geological Research       (Followers: 1) Journal of Geovisualization and Spatial Analysis Journal of Global Optimization       (Followers: 6) Journal of Global Research in Mathematical Archives Journal of Homotopy and Related Structures Journal of Honai Math Journal of Humanistic Mathematics       (Followers: 1) Journal of Hyperbolic Differential Equations Journal of Indian Council of Philosophical Research Journal of Industrial Mathematics       (Followers: 2) Journal of Inequalities and Applications Journal of Infrared, Millimeter and Terahertz Waves       (Followers: 3) Journal of Integrable Systems Journal of Knot Theory and Its Ramifications       (Followers: 2) Journal of Liquid Chromatography & Related Technologies       (Followers: 7) Journal of Logical and Algebraic Methods in Programming       (Followers: 1) Journal of Manufacturing Systems       (Followers: 3) Journal of Mathematical Analysis and Applications       (Followers: 3) Journal of mathematical and computational science       (Followers: 2)

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Similar Journals
 Groups, Complexity, CryptologyJournal Prestige (SJR): 0.208 Number of Followers: 2     Open Access journal ISSN (Print) 1867-1144 - ISSN (Online) 1869-6104 Published by Episciences  [2 journals]
• The Axiomatics of Free Group Rings

• Abstract: In [FGRS1,FGRS2] the relationship between the universal and elementary theoryof a group ring $R[G]$ and the corresponding universal and elementary theory ofthe associated group $G$ and ring $R$ was examined. Here we assume that $R$ isa commutative ring with identity $1 \ne 0$. Of course, these are relative to anappropriate logical language $L_0,L_1,L_2$ for groups, rings and group ringsrespectively. Axiom systems for these were provided in [FGRS1]. In [FGRS1] itwas proved that if $R[G]$ is elementarily equivalent to $S[H]$ with respect to$L_{2}$, then simultaneously the group $G$ is elementarily equivalent to thegroup $H$ with respect to $L_{0}$, and the ring $R$ is elementarily equivalentto the ring $S$ with respect to $L_{1}$. We then let $F$ be a rank $2$ freegroup and $\mathbb{Z}$ be the ring of integers. Examining the universal theoryof the free group ring ${\mathbb Z}[F]$ the hazy conjecture was made that theuniversal sentences true in ${\mathbb Z}[F]$ are precisely the universalsentences true in $F$ modified appropriately for group ring theory and theconverse that the universal sentences true in $F$ are the universal sentencestrue in ${\mathbb Z}[F]$ modified appropriately for group theory. In this paperwe show this conjecture to be true in terms of axiom systems for ${\mathbbZ}[F]$.
PubDate: Mon, 06 Dec 2021 09:51:51 +010

• Finitely generated subgroups of free groups as formal languages and their
cogrowth

• Abstract: For finitely generated subgroups $H$ of a free group $F_m$ of finite rank$m$, we study the language $L_H$ of reduced words that represent $H$ which is aregular language. Using the (extended) core of Schreier graph of $H$, weconstruct the minimal deterministic finite automaton that recognizes $L_H$.Then we characterize the f.g. subgroups $H$ for which $L_H$ is irreducible andfor such groups explicitly construct ergodic automaton that recognizes $L_H$.This construction gives us an efficient way to compute the cogrowth series$L_H(z)$ of $H$ and entropy of $L_H$. Several examples illustrate the methodand a comparison is made with the method of calculation of $L_H(z)$ based onthe use of Nielsen system of generators of $H$.
PubDate: Tue, 16 Nov 2021 05:03:24 +010

• A fibering theorem for 3-manifolds

• Abstract: We generalize a result of Moon on the fibering of certain 3-manifolds overthe circle. Our main theorem is the following: Let $M$ be a closed 3-manifold.Suppose that $G=\pi_1(M)$ contains a finitely generated group $U$ of infiniteindex in $G$ which contains a non-trivial subnormal subgroup $N\neq \mathbb{Z}$of $G$, and suppose that $N$ has a composition series of length $n$ in which atleast $n-1$ terms are finitely generated. Suppose that $N$ intersectsnontrivially the fundamental groups of the splitting tori given by theGeometrization Theorem and that the intersections of $N$ with the fundamentalgroups of the geometric pieces are non-trivial and not isomorphic to$\mathbb{Z}$. Then, $M$ has a finite cover which is a bundle over $\mathbb{S}$with fiber a compact surface $F$ such that $\pi_1(F)$ and $U$ arecommensurable.
PubDate: Thu, 11 Nov 2021 06:24:13 +010

• Groups with context-free Diophantine problem

• Abstract: We find algebraic conditions on a group equivalent to the position of itsDiophantine problem in the Chomsky Hierarchy. In particular, we prove that afinitely generated group has a context-free Diophantine problem if and only ifit is finite.
PubDate: Thu, 26 Aug 2021 17:57:47 +020

• Onto extensions of free groups

• Abstract: An extension of subgroups $H\leqslant K\leqslant F_A$ of the free group ofrank $A =r\geqslant 2$ is called onto when, for every ambient free basis $A'$,the Stallings graph $\Gamma_{A'}(K)$ is a quotient of $\Gamma_{A'}(H)$.Algebraic extensions are onto and the converse implication was conjectured byMiasnikov-Ventura-Weil, and resolved in the negative, first byParzanchevski-Puder for rank $r=2$, and recently by Kolodner for general rank.In this note we study properties of this new type of extension among freegroups (as well as the fully onto variant), and investigate their correspondingclosure operators. Interestingly, the natural attempt for a dual notion -- intoextensions -- becomes trivial, making a Takahasi type theorem not possible inthis setting.
PubDate: Thu, 15 Apr 2021 17:13:52 +020

• A new method for solving the elliptic curve discrete logarithm problem

• Abstract: The elliptic curve discrete logarithm problem is considered a securecryptographic primitive. The purpose of this paper is to propose a paradigmshift in attacking the elliptic curve discrete logarithm problem. In thispaper, we will argue that initial minors are a viable way to solve thisproblem. This paper will present necessary algorithms for this attack. We havewritten a code to verify the conjecture of initial minors using Schurcomplements. We were able to solve the problem for groups of order up to$2^{50}$.
PubDate: Tue, 16 Feb 2021 11:31:18 +010

• On Types of Elliptic Pseudoprimes

• Abstract: We generalize the notions of elliptic pseudoprimes and elliptic Carmichaelnumbers introduced by Silverman to analogues of Euler-Jacobi and strongpseudoprimes. We investigate the relationships among Euler Elliptic Carmichaelnumbers , strong elliptic Carmichael numbers, products of anomalous primes andelliptic Korselt numbers of Type I: The former two of these are introduced inthis paper, and the latter two of these were introduced by Mazur (1973) andSilverman (2012) respectively. In particular, we expand upon a previous work ofBabinkostova et al. by proving a conjecture about the density of certainelliptic Korselt numbers of Type I that are products of anomalous primes.
PubDate: Wed, 10 Feb 2021 10:37:09 +010

• Density of Metric Small Cancellation in Finitely Presented Groups

• Abstract: Small cancellation groups form an interesting class with many desirableproperties. It is a well-known fact that small cancellation groups are generic;however, all previously known results of their genericity are asymptotic andprovide no information about "small" group presentations. In this note, we giveclosed-form formulas for both lower and upper bounds on the density of smallcancellation presentations, and compare our results with experimental data.
PubDate: Wed, 09 Sep 2020 10:18:41 +020

• On subset sum problem in branch groups

• Abstract: We consider a group-theoretic analogue of the classic subset sum problem. Inthis brief note, we show that the subset sum problem is NP-complete in thefirst Grigorchuk group. More generally, we show NP-hardness of that problem inweakly regular branch groups, which implies NP-completeness if the group is, inaddition, contracting.
PubDate: Wed, 24 Jun 2020 11:00:50 +020

• Optimal Ate Pairing on Elliptic Curves with Embedding Degree $9,15$ and
$27$

• Abstract: Much attention has been given to the efficient computation of pairings onelliptic curves with even embedding degree since the advent of pairing-basedcryptography. The few existing works in the case of odd embedding degreesrequire some improvements. This paper considers the computation of optimal atepairings on elliptic curves of embedding degrees $k=9$, $15$, $27$ which havetwists of order three. Our main goal is to provide a detailed arithmetic andcost estimation of operations in the tower extensions field of thecorresponding extension fields. A good selection of parameters enables us toimprove the theoretical cost for the Miller step and the final exponentiationusing the lattice-based method as compared to the previous few works that existin these cases. In particular, for $k=15$, $k=27$, we obtain an improvement, interms of operations in the base field, of up to 25% and 29% respectively in thecomputation of the final exponentiation. We also find that elliptic curves withembedding degree $k=15$ present faster results than BN12 curves at the 128-bitsecurity level. We provide a MAGMA implementation in each case to ensure thecorrectness of the formulas used in this work.
PubDate: Fri, 17 Apr 2020 13:40:56 +020

• A fault attack on the Niederreiter cryptosystem using binary irreducible
Goppa codes

• Abstract: A fault injection framework for the decryption algorithm of the Niederreiterpublic-key cryptosystem using binary irreducible Goppa codes and classicaldecoding techniques is described. In particular, we obtain low-degreepolynomial equations in parts of the secret key. For the resulting system ofpolynomial equations, we present an efficient solving strategy and show how toextend certain solutions to alternative secret keys. We also provide estimatesfor the expected number of required fault injections, apply the framework tostate-of-the-art security levels, and propose countermeasures against this typeof fault attack.
PubDate: Fri, 20 Mar 2020 12:27:39 +010

• On the lattice of subgroups of a free group: complements and rank

• Abstract: A $\vee$-complement of a subgroup $H \leqslant \mathbb{F}_n$ is a subgroup $K\leqslant \mathbb{F}_n$ such that $H \vee K = \mathbb{F}_n$. If we also ask $K$to have trivial intersection with $H$, then we say that $K$ is a$\oplus$-complement of $H$. The minimum possible rank of a $\vee$-complement(resp. $\oplus$-complement) of $H$ is called the $\vee$-corank (resp.$\oplus$-corank) of $H$. We use Stallings automata to study these notions andthe relations between them. In particular, we characterize when complementsexist, compute the $\vee$-corank, and provide language-theoretical descriptionsof the sets of cyclic complements. Finally, we prove that the two notions ofcorank coincide on subgroups that admit cyclic complements of both kinds.
PubDate: Mon, 02 Mar 2020 12:56:10 +010

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