New Types of Permuting N-Derivations with Their Applications on Associative Rings
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Rings Whose Quasi-Injective Modules Are Injecttve K
proceedings of the american mathematical society Volume 33, Number 2, June 1972 RINGS WHOSE QUASI-INJECTIVE MODULES ARE INJECTTVE K. A. BYRD Abstract. A ring R is called a V-ring, respectively SSI-ring, respectively QH-ring if simple, respectively semisimple, respectively quasi-injective, right Ä-modules are injective. We show that R is SSI if and only if R is a right noetherian V-ring and that any SSI-ring is a finite ring direct sum of simple SSI-rings. We show that if R is left noetherian and SSI then R is QII provided R is hereditary and that in order for R to be hereditary it suffices that maximal right ideals of R be reflexive. An example of Cozzens is cited to show these rings need not be artinian. The rings R which have the property that quasi-injective right R- modules are injective (herein called QII-rings) have been little mentioned in the literature though related classes of rings have been extensively examined. Consider the classes of R-modules consisting of (1) all R- modules, (2) injective R-modules, (3) projective R-modules, (4) quasi- injective R-modules, and (5) quasi-projective R-modules. Of all the nontrivial inclusions one can assume between two of these classes, all but one has been shown to characterize the ring R as either semisimple artinian, quasi-Frobenius, or uniserial. That one excepted is the class of QII-rings whose internal structure, it seems, has not been completely determined. This paper does not attempt a general structure theorem but investi- gates the connection between QII-rings and rings whose semisimple right modules are injective (SSI-rings). -
An Introduction to Operad Theory
AN INTRODUCTION TO OPERAD THEORY SAIMA SAMCHUCK-SCHNARCH Abstract. We give an introduction to category theory and operad theory aimed at the undergraduate level. We first explore operads in the category of sets, and then generalize to other familiar categories. Finally, we develop tools to construct operads via generators and relations, and provide several examples of operads in various categories. Throughout, we highlight the ways in which operads can be seen to encode the properties of algebraic structures across different categories. Contents 1. Introduction1 2. Preliminary Definitions2 2.1. Algebraic Structures2 2.2. Category Theory4 3. Operads in the Category of Sets 12 3.1. Basic Definitions 13 3.2. Tree Diagram Visualizations 14 3.3. Morphisms and Algebras over Operads of Sets 17 4. General Operads 22 4.1. Basic Definitions 22 4.2. Morphisms and Algebras over General Operads 27 5. Operads via Generators and Relations 33 5.1. Quotient Operads and Free Operads 33 5.2. More Examples of Operads 38 5.3. Coloured Operads 43 References 44 1. Introduction Sets equipped with operations are ubiquitous in mathematics, and many familiar operati- ons share key properties. For instance, the addition of real numbers, composition of functions, and concatenation of strings are all associative operations with an identity element. In other words, all three are examples of monoids. Rather than working with particular examples of sets and operations directly, it is often more convenient to abstract out their common pro- perties and work with algebraic structures instead. For instance, one can prove that in any monoid, arbitrarily long products x1x2 ··· xn have an unambiguous value, and thus brackets 2010 Mathematics Subject Classification. -
Arxiv:Math/0701299V1 [Math.QA] 10 Jan 2007 .Apiain:Tfs F,S N Oooyagba 11 Algebras Homotopy and Tqfts ST CFT, Tqfts, 9.1
FROM OPERADS AND PROPS TO FEYNMAN PROCESSES LUCIAN M. IONESCU Abstract. Operads and PROPs are presented, together with examples and applications to quantum physics suggesting the structure of Feynman categories/PROPs and the corre- sponding algebras. Contents 1. Introduction 2 2. PROPs 2 2.1. PROs 2 2.2. PROPs 3 2.3. The basic example 4 3. Operads 4 3.1. Restricting a PROP 4 3.2. The basic example 5 3.3. PROP generated by an operad 5 4. Representations of PROPs and operads 5 4.1. Morphisms of PROPs 5 4.2. Representations: algebras over a PROP 6 4.3. Morphisms of operads 6 5. Operations with PROPs and operads 6 5.1. Free operads 7 5.1.1. Trees and forests 7 5.1.2. Colored forests 8 5.2. Ideals and quotients 8 5.3. Duality and cooperads 8 6. Classical examples of operads 8 arXiv:math/0701299v1 [math.QA] 10 Jan 2007 6.1. The operad Assoc 8 6.2. The operad Comm 9 6.3. The operad Lie 9 6.4. The operad Poisson 9 7. Examples of PROPs 9 7.1. Feynman PROPs and Feynman categories 9 7.2. PROPs and “bi-operads” 10 8. Higher operads: homotopy algebras 10 9. Applications: TQFTs, CFT, ST and homotopy algebras 11 9.1. TQFTs 11 1 9.1.1. (1+1)-TQFTs 11 9.1.2. (0+1)-TQFTs 12 9.2. Conformal Field Theory 12 9.3. String Theory and Homotopy Lie Algebras 13 9.3.1. String backgrounds 13 9.3.2. -
Atiyah Singer Index Theorem.Pdf
ATIYAH-SINGER INDEX THEOREM FROM SUPERSYMMETRIC QUANTUM MECHANICS HEATHER LEE Master of Science in Mathematics Nipissing University 2010 ATIYAH-SINGER INDEX THEOREM FROM SUPERSYMMETRIC QUANTUM MECHANICS HEATHER LEE SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN MATHEMATICS NIPISSING UNIVERSITY SCHOOL OF GRADUATE STUDIES NORTH BAY, ONTARIO Heather Lee August 2010 I hereby declare that I am the sole author of this Thesis or major Research Paper. I authorize Nipissing University to lend this thesis or Major Research Paper to other institutions or individuals for the purpose of scholarly research. I further authorize Nipissing University to reproduce this thesis or dissertation by photocopying or by other means, in total or in part, at the request of other institutions or individuals for the purpose of scholarly research. Abstract Some preliminary knowledge for understanding the Atiyah-Singer theorem, including differential manifolds, Cartan’s exterior algebra, de Rham cohomology, Hodge theory, Riemannian manifolds and K¨ahler manifolds, fibre bundle theory, and characteristic classes is reviewed. The Atiyah-Singer index theorems for four classical elliptic complexes, including the Gauss-Bonnet theorem of the de Rahm complex, Hirzebruch Signature theorem of the signature complex, Reimann-Roch theorems of the Dolbeault complex, and the index theorem for A-roof genus of spin complex, are introduced. Quantum mechanics is formulated from classical mechanics using the canonical and path integral quantizations. Supersymmetric quantum mechanics is introduced including the 0+1-dimensional supersymmetric nonlinear sigma model. By representing supersymmetric quantum theory as a graded Hilbert space, the identification between a supersymmetric quantum mechanical system and a certain elliptic complex is established. -
Reconstruction of Vehicle Dynamics from Inertial and GNSS Data
ALMA MATER STUDIORUM UNIVERSITÀ DI BOLOGNA ¢ Reconstruction of vehicle dynamics from inertial and GNSS data Scuola di Scienze CORSO DI LAUREA IN INFORMATICA Supervisor: Candidate: Chiar.mo Prof. Federico Bertani Stefano Sinigardi Co-Supervisor: Dott. Alessandro Fabbri I sessione Anno Accademico 2017-2018 ABSTRACT The increasingly massive collection of data from various types of sensors installed on vehicles allows the study and reconstruction of their dynamics in real time, as well as their archiving for subsequent analysis. This Thesis describes the design of a numerical algorithm and its implementation in a program that uses data from inertial and geo-positioning sensors, with applications in industrial contexts and automotive research. The result was made usable through the development of a Python add-on for the Blender graphics program, able to generate a three- dimensional view of the dynamics that can be used by experts and others. Throughout the Thesis, particular attention was paid to the complex nature of the data processed, introducing adequate systems for filtering, interpolation, integration and analysis, aimed at reducing errors and simultaneously optimizing performances. La raccolta sempre più massiccia di dati provenienti da sensori di varia natura installati sui veicoli in circolazione permette lo studio e la ricostruzione della loro dinamica in tempo reale, nonché la loro archiviazione per analisi a posteriori. In questa Tesi si descrive la progettazione di un algoritmo numerico e la sua implementazione in un programma che utilizza dati provenienti da sensori inerziali e di geo-posizionamento con applicazioni a contesti industriali e di ricerca automobilistica. Il risultato è stato reso fruibile tramite lo sviluppo di un add-on Python per il programma di grafica Blender, in grado di generare una visualizzazione tridimensionale della dinamica fruibile da esperti e non. -
On Subdirect Product of Prime Modules
Commun. Korean Math. Soc. 32 (2017), No. 2, pp. 277–285 https://doi.org/10.4134/CKMS.c160103 pISSN: 1225-1763 / eISSN: 2234-3024 ON SUBDIRECT PRODUCT OF PRIME MODULES Najmeh Dehghani and Mohammad Reza Vedadi Abstract. In the various module generalizations of the concepts of prime (semiprime) for a ring, the question “when are semiprime modules sub- direct product of primes?” is a serious question in this context and it is considered by earlier authors in the literature. We continue study on the above question by showing that: If R is Morita equivalent to a right pre-duo ring (e.g., if R is commutative) then weakly compressible R-modules are precisely subdirect products of prime R-modules if and only if dim(R) = 0 and R/N(R) is a semi-Artinian ring if and only if every classical semiprime module is semiprime. In this case, the class of weakly compressible R-modules is an enveloping for Mod-R. Some related conditions are also investigated. 1. Introduction Throughout this paper rings will have a nonzero identity, modules will be right and unitary. In the literature, there are several module generalizations of a semiprime (prime) ring, see [15, Sections 13 and 14] for an excellent reference on the subject. These generalizations introduce various concepts of semiprime (prime) modules and many important theories on semiprime (prime) rings are generalized to modules by them, see; [3], [7], [8], [10] and [17]. The natural question “when are semiprime modules subdirect product of primes?” is then appeared related to these generalizations. In the following, we first recall some definitions of the literature and explain some where the above question was studied. -
Annihilators in Semiprime Right Goldie Rings
Proceedings of the Edinburgh Mathematical Society (1992) 35, 133-137 © ANNIHILATORS IN SEMIPRIME RIGHT GOLDIE RINGS by C. R. HAJARNAVIS (Received 20th March 1990) (i) Let R be a semiprime right Goldie ring with dim R = n. Then a maximal chain of right annihilators in R has exactly n terms, (ii) A semiprime locally right Goldie ring with ACC and DCC on right annihilators is a right Goldie ring. 1980 Mathematics subject classification (1985 Revision): 16A34. 1. Introduction The aim of this note is to answer two questions raised by Brown and Wehrfritz in [1]. Let R be a semiprime right Goldie ring of uniform dimension n. Since the right singular ideal of R is zero, the right annihilators are complements and so any ascending (or descending) chain of right annihilators in R has at most n terms. While studying certain crossed products, Brown and Wehrfritz have wondered if a maximal such chain necessarily has n terms. This is easy to see if the Goldie chain conditions are assumed to be two-sided. In this case R has a two-sided quotient ring Q of dimension n. The extension of a chain of right annihilators in R can be refined to a chain of length n of right ideals in Q. Intersecting back to R we get a chain of length n in which every term is a right annihilator of a single element of R; this last property following from the fact that elements of Q are expressible as left fractions. We demonstrate here that although the above strategy fails under one-sided assumptions, further analysis of right complements in R shows the required result to be true (Theorem 3.4). -
A Note on Varieties of Semiprime Rings with Semigroup Identities
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector JOURNAL OF ALGEBRA 54, 42-45 (1978) A Note on Varieties of Semiprime Rings with Semigroup Identities IGOR Z. GOLUBCHIK AND ALEXANDER MIKHALEV Department of Mechanics and Mathematics, Moscow State University, Moscow V-234, USSR Communicated by A. W. Goldie Received November 14. 1977 Let o(x, ,..., xk) and u(xr ,..., xk) be any monomials, f(x, ,..., x~) = @I ,**., Xt) - u(q >..., xk), and degf the total degree of f(zl ,..., xk). A poly- nomial identityf(x, ,..., x~) = 0 will be called a semigroup identity. Examples of rings with semigroup identities. (1) R is a commutative ring. Then we take f(xl , ~a) = xi.‘cz - x.~x, . (2) R is a finite ring. Indeed (see, for instance, [5]), let I R j = r < 03. Consider fi : R -+ R, i = I,2 ,..., given by fi(a) = ui for all a E R. We have no more than F-I distinct maps fi . So fit = fi for some I < K. Thus ux- = a2 for all a E R and we take f(x) = .G’ - 9. We remark that varieties of the form var(R), where R is a finite ring, were described in many ways among all other varieties of rings by Lvov [5, 61 and Kruse [7]. Our main result is the following THEOREM. Let R be a semiprime associative ring with a semigroup identity. Denote the variety of R by var(R). Then var(R) = var(A @ B), where A is a finite ring and B is a commutative ring. -
IN Herstein Proved That If R Is a Prime Ring and D Is an Inner Derivation Of
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY Volume 124, Number 6, June 1996 A RESULT ON DERIVATIONS TSIU-KWEN LEE AND JER-SHYONG LIN (Communicated by Ken Goodearl) Abstract. Let R be a semiprime ring with a derivation d and let U be a Lie ideal of R, a R. Suppose that ad(u)n =0forallu U,wherenis a fixed positive integer.∈ Then ad(I)=0forIthe ideal of R generatedby[∈ U, U]and if R is 2-torsion free, then ad(U) = 0. Furthermore, R is a subdirect sum of semiprime homomorphic images R1 and R2 with derivations d1 and d2, induced canonically by d, respectively such that ad1(R1) = 0 and the image of U in R2 is commutative (central if R is 2-torsion free), where a denotes the image of a in R1.Moreover,ifU=R,thenad(R) = 0. This gives Bre˘sar’s theorem without the (n 1)!-torsion free assumption on R. − In [8] I. N. Herstein proved that if R is a prime ring and d is an inner derivation of R such that d(x)n =0forallx Rand n a fixed integer, then d =0.In[6] A. Giambruno and I. N. Herstein extended∈ this result to arbitrary derivations in semiprime rings. In [2] L. Carini and A. Giambruno proved that if R is a prime ring with a derivation d such that d(x)n(x) =0forallx U, a Lie ideal of R, then d(U)=0whenRhas no nonzero nil right ideals, char∈R =2andthesame conclusion holds when n(x)=nis fixed and R is a 2-torsion free6 semiprime ring. -
Algebras with One Operation Including Poisson and Other Lie-Admissible
Algebras with one operation including Poisson and other Lie-admissible algebras Martin Markl∗ and Elisabeth Remm† Abstract. We investigate algebras with one operation. We study when these algebras form a monoidal category and analyze Koszulness and cyclicity of the corresponding operads. We also introduce a new kind of symmetry for operads, the dihedrality, responsible for the existence of dihedral cohomology. The main trick, which we call the polarization, will be to represent an algebra with one operation without any specific symmetry as an algebra with one commutative and one anticommutative operations. We will try to convince the reader that this change of perspective might sometimes lead to new insights and results. This point of view was used in [15] to introduce a one-parametric family of operads whose specialization at 0 is the operad for Poisson algebras, while at a generic point it equals the operad for associative algebras. We study this family and explain how it can be used to interpret the deformation quantization ( -product) in a neat and elegant ∗ way. Table of content: 1. Some examples to warm up – page 3 2. Monoidal structures – page 9 3. Koszulness, cyclicity and dihedrality – page 13 Introduction If not stated otherwise, all algebraic objects in this paper will be defined over a fixed field K arXiv:math/0412206v1 [math.AT] 10 Dec 2004 of characteristic 0. We assume basic knowledge of operads as it can be gained for example from [20], though the first two sections can be read without this knowledge. We are going to study classes of algebras with one operation : V V V and axioms given as linear · ⊗ → combinations of terms of the form vσ (vσ vσ ) and/or (vσ vσ ) vσ , where σ Σ (1) · (2) · (3) (1) · (2) · (3) ∈ 3 is a permutation. -
High School Mathematics Glossary Pre-Calculus
High School Mathematics Glossary Pre-calculus English-Chinese BOARD OF EDUCATION OF THE CITY OF NEW YORK Board of Education of the City of New York Carol A. Gresser President Irene H. ImpeUizzeri Vice President Louis DeSario Sandra E. Lerner Luis O. Reyes Ninfa Segarra-Velez William C. Thompson, ]r. Members Tiffany Raspberry Student Advisory Member Ramon C. Cortines Chancellor Beverly 1. Hall Deputy Chancellor for Instruction 3195 Ie is the: policy of the New York City Board of Education not to discriminate on (he basis of race. color, creed. religion. national origin. age. handicapping condition. marital StatuS • .saual orientation. or sex in itS eduacional programs. activities. and employment policies. AS required by law. Inquiries regarding compiiulce with appropriate laws may be directed to Dr. Frederick..6,.. Hill. Director (Acting), Dircoetcr, Office of Equal Opporrurury. 110 Livingston Screet. Brooklyn. New York 11201: or Director. Office for o ..·ij Rights. Depa.rtmenc of Education. 26 Federal PJaz:t. Room 33- to. New York. 'Ne:w York 10278. HIGH SCHOOL MATHEMATICS GLOSSARY PRE-CALCULUS ENGLISH - ClllNESE ~ 0/ * ~l.tt Jf -taJ ~ 1- -jJ)f {it ~t ~ -ffi 'ff Chinese!Asian Bilingual Education Technical Assistance Center Division of Bilingual Education Board of Education of the City of New York 1995 INTRODUCTION The High School English-Chinese Mathematics Glossary: Pre calculus was developed to assist the limited English proficient Chinese high school students in understanding the vocabulary that is included in the New York City High School Pre-calculus curricu lum. To meet the needs of the Chinese students from different regions, both traditional and simplified character versions are included. -
Non-Associative and Non- Distributive Pararing
© 2017 JETIR October 2017, Volume 4, Issue 10 www.jetir.org (ISSN-2349-5162) NON-ASSOCIATIVE AND NON- DISTRIBUTIVE PARARING Jalaj Kumar Kashyap1 and Shanker Kumar2 1Dept. of Mathematics, T.M. Bhagalpur University, Bhagalpur, 2Dept. of Mathematics, T.M. Bhagalpur University, Bhagalpur. ABSTRACT : In this paper a particular type of associative (non-associative) non-distributive ring has been introduced with the help of a newly defined distributive property called the para-distributive property. Different types of pararing have been illustrated with examples. Lastly some important properties of the pararing have been studied. Keywords: Para-distributive property, Basal, Mixed ring, Pararing, Sub-pararing. 1. Introduction Non-associative and non-distributive rings of different varieties have introduced quasi-ring R(+, 0) with the help of quasi- distributive properties [3] : x + (y + z) = x y + x z - x; (x + y) z = x z + y z - z; x, y, z R(+, 0). Quasi-distributive ring is not a ring and vice versa. Further, x and x , being the nul1element of R(+, 0). x (y + z) = x y = x z - x ; (1.1) (y + z) x = y x + z x - x (1.2) to deal with weak-ring and weak lie algebras respectively. Weak-ring and weak lie algebras are not ring and lie algebras respectively [l]. For quasi-vector space v over F we have used a generalised form of scalar distribution property ( + + )x = x + x + x; , , F, x v. In this paper para-distributive and right (left) para-distributive properties have been introduced in an analogous way leading to the definition of pararing, right (left) ring and mixed ring of a pararing such that any ring is a right (left) ring and mixed ring which are again pararing but the converse is not true.