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4.4 Η Άλγεβρα στην Γαλλία, Γερμανία, Αγγλία και Πορτογαλία
4.4 Η Άλγεβρα στην Γαλλία, Γερμανία, Αγγλία και Πορτογαλία

... Greek Dichotomy (2/2) • The continuous, the final elimination of which was to occur about a century later. • Chuquet also displayed in the second part of his work the standard methods for calculating the square and cube roots of larger integers, one integral place at a time, but as is usual in the d ...
4.4 Η Άλγεβρα στην Γαλλία, Γερμανία, Αγγλία και Πορτογαλία (PPT)
4.4 Η Άλγεβρα στην Γαλλία, Γερμανία, Αγγλία και Πορτογαλία (PPT)

... Greek Dichotomy (2/2) • The continuous, the final elimination of which was to occur about a century later. • Chuquet also displayed in the second part of his work the standard methods for calculating the square and cube roots of larger integers, one integral place at a time, but as is usual in the d ...
The Fourier Algebra and homomorphisms
The Fourier Algebra and homomorphisms

... Endow C[G] with the usual inner product DX X E X λs s, µt t = λs µ s . s ...
Quantum groups: A survey of de nitions, motivations, and results
Quantum groups: A survey of de nitions, motivations, and results

quantum computing for computer scientists
quantum computing for computer scientists

... (orientation +1) and NOT a = False can be denoted as –a = a (orientation –1). The scalar orientation coefficient c preceding the vector ca can have the real values of c = +1, –1, or 0, which naturally leads to a ternary state system (similar to tristate logic) with symmetric binary states of +1 = + ...
Lectures on Hopf algebras
Lectures on Hopf algebras

Gauge and Matter Fields on a Lattice - Generalizing
Gauge and Matter Fields on a Lattice - Generalizing

... spin |ϕ−1 ⟩ states. We say that two states that are related by the action of the vertex operator have gauge equivalent configurations. . . . . . . . . . . 2.7 Some illustrative constituents of the ground state |Ψv0 ⟩ are shown, where (a) corresponds to the first term in the expansion of Eq.(2.31), ( ...
Factorization algebras and free field theories
Factorization algebras and free field theories

... these quantum corrections satisfy algebraic relations arising from the Feynman diagram expansion used to compute them. For the precosheaf Obsq of quantum observables, these algebraic relations modify the structure maps Obsq (U ) ⊗ Obsq (V ) → Obsq (W ), where U and V are disjoint opens contained in ...
[math.QA] 23 Feb 2004 Quantum groupoids and
[math.QA] 23 Feb 2004 Quantum groupoids and

... of certain L-bialgebroids, were L is a base algebra over a Hopf algebra H in the sense of Definition 2.1. The simplest bialgebroid of this kind, namely the smash product L ⋊ H, was introduced in [Lu]. It is interesting to note that bialgebroids of [Lu] were considered over exactly the same class of ...
full text (.pdf)
full text (.pdf)

A categorification of a quantum Frobenius map
A categorification of a quantum Frobenius map

Boolean Algebra
Boolean Algebra

Free Heyting algebras: revisited
Free Heyting algebras: revisited

... lattice D the poset (J(H(D)), ≤) is isomorphic to (P(J(D)), ⊆). Below we give a dual proof of this fact. The dual proof, which relies on the fact that identifying two elements of an algebra simply corresponds to throwing out those points of the dual that are below one and not the other, is produced ...
Splittings of Bicommutative Hopf algebras - Mathematics
Splittings of Bicommutative Hopf algebras - Mathematics

... ring K(n)∗ ' Fp [vn±1 ] where p is a prime and the degree of vn is 2(pn − 1). The first two authors were led by their study [KL02] to an interest in the fibration K(Z, 3) → BOh8i → BSpin. The Morava K-theory for p = 2 of this was analyzed in [KLW]. In particular, for n = 2, although the first map do ...
Conformal geometry of the supercotangent and spinor
Conformal geometry of the supercotangent and spinor

C.P. Boyer y K.B. Wolf, Canonical transforms. III. Configuration and
C.P. Boyer y K.B. Wolf, Canonical transforms. III. Configuration and

... by establishing the connection of this system with the harmonic oscillator. Although the complete dynamical groups for the two systems are different (the symplectic group Sp(n, R) for the oscillator and O(n, 2) for the Coulomb system), the representations of the SL(2, R) subgroup are isomorphic ally ...
cluster algebras in algebraic lie theory
cluster algebras in algebraic lie theory

Geometry of State Spaces - Institut für Theoretische Physik
Geometry of State Spaces - Institut für Theoretische Physik

... arbitrariness to phase factors. As a consequence, two curves of unit vectors represent the same curve of states if they differ only in phase. They are physically equivalent. Thus, considering a given curve — for instance a piece of a solution of a Schrödinger equation – one can ask for an equivalen ...
Applying Universal Algebra to Lambda Calculus
Applying Universal Algebra to Lambda Calculus

... or semantic considerations. Indeed, a λ-theory may correspond to a possible operational semantics of lambda calculus, as well as it may be induced by a model of lambda calculus through the kernel congruence relation of the interpretation function. Syntactical proofs of consistency of remarkable λ-th ...
Quantum Cohomology via Vicious and Osculating Walkers
Quantum Cohomology via Vicious and Osculating Walkers

... eigenvectors of the transfer matrices of these models yield the idempotents of the Verlinde algebra of the gauged û(n)k -WZNW model. The latter is known to be closely related to the small quantum cohomology ring of the Grassmannian. We establish further that the partition functions of the vicious a ...
RSK Insertion for Set Partitions and Diagram Algebras
RSK Insertion for Set Partitions and Diagram Algebras

... where S is an irreducible Sk -module of dimension f λ and V λ is an irreducible GLr (C)module of dimension dλ . We get (1.1.a) by computing dimensions on each side of (1.2). R. Brauer [Br] defined an algebra CBk (n), which is isomorphic to the centralizer algebra of the orthogonal group On (C) ⊆ GLn ...
Basics of associative algebras
Basics of associative algebras

... Simple and semisimple algebras The above discussion suggests that you can have a wide variety of algebras even in quite small dimension. Not all of them are of equal interest however. Often it suffices to consider certain nice classes of algebras, such as simple algebras. The definition of a simple al ...
A MONOIDAL STRUCTURE ON THE CATEGORY OF
A MONOIDAL STRUCTURE ON THE CATEGORY OF

Iterants, Fermions and the Dirac Equation
Iterants, Fermions and the Dirac Equation

... shows how the 2 × 2 iterant interpretation generalizes to an n × n matrix construction using the symmetric group Sn . In Section 4 we have shown that there is a natural iterant algebra for Sn that is associated with matrices of size n! × n!. In Section 5 we show there is another iterant algebra for ...
power-associative rings - American Mathematical Society
power-associative rings - American Mathematical Society

... are first led to attach to any algebra 33 over a field % an algebra 33(X) defined for every X of %. This algebra is the same vector space over g as 33 but the product xy in 33(X) is defined in terms of the product xy of 33 by x-y=\xy + (1—X)yx. We then call an algebra 2Í over § a quasiassociative al ...
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Vertex operator algebra

In mathematics, a vertex operator algebra (VOA) is an algebraic structure that plays an important role in conformal field theory and string theory. In addition to physical applications, vertex operator algebras have proven useful in purely mathematical contexts such as monstrous moonshine and the geometric Langlands correspondence.The related notion of vertex algebra was introduced by Richard Borcherds in 1986, motivated by a construction of an infinite-dimensional Lie algebra due to Frenkel. In the course of this construction, one employs a Fock space that admits an action of vertex operators attached to lattice vectors. Borcherds formulated the notion of vertex algebra by axiomatizing the relations between the lattice vertex operators, producing an algebraic structure that allows one to construct new Lie algebras by following Frenkel's method.The notion of vertex operator algebra was introduced as a modification of the notion of vertex algebra, by Frenkel, Lepowsky, and Meurman in 1988, as part of their project to construct the moonshine module. They observed that many vertex algebras that appear in nature have a useful additional structure (an action of the Virasoro algebra), and satisfy a bounded-below property with respect to an energy operator. Motivated by this observation, they added the Virasoro action and bounded-below property as axioms.We now have post-hoc motivation for these notions from physics, together with several interpretations of the axioms that were not initially known. Physically, the vertex operators arising from holomorphic field insertions at points (i.e., vertices) in two dimensional conformal field theory admit operator product expansions when insertions collide, and these satisfy precisely the relations specified in the definition of vertex operator algebra. Indeed, the axioms of a vertex operator algebra are a formal algebraic interpretation of what physicists call chiral algebras, or ""algebras of chiral symmetries"", where these symmetries describe the Ward identities satisfied by a given conformal field theory, including conformal invariance. Other formulations of the vertex algebra axioms include Borcherds's later work on singular commutative rings, algebras over certain operads on curves introduced by Huang, Kriz, and others, and D-module-theoretic objects called chiral algebras introduced by Alexander Beilinson and Vladimir Drinfeld. While related, these chiral algebras are not precisely the same as the objects with the same name that physicists use.Important basic examples of vertex operator algebras include lattice VOAs (modeling lattice conformal field theories), VOAs given by representations of affine Kac–Moody algebras (from the WZW model), the Virasoro VOAs (i.e., VOAs corresponding to representations of the Virasoro algebra) and the moonshine module V♮, which is distinguished by its monster symmetry. More sophisticated examples such as affine W-algebras and the chiral de Rham complex on a complex manifold arise in geometric representation theory and mathematical physics.
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