• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Linear Algebra
Linear Algebra

... If V is a real vector space, a function that assigns to every pair of vectors x and y in V a real number ( x,y) is said to be an inner product on V , if it has the following properties . (1) ( x,x)  0 ( x,x)  0 if and only if x  0 (2) ( x, y  z )  ( x, y )  ( x, z ) ( x  y , z )  ( x, z )  ...
Normal and anti-normal ordered expressions for
Normal and anti-normal ordered expressions for

... In order to solve some problems in quantum mechanics, it is needed to calculate function of the operator n̂ = ↠â, where â and ↠are annihilation and creation operators of the harmonic oscillator, respectively. For instance in ion traps [1], it is usual to associate Laguerre polynomials of ord ...
A Subrecursive Refinement of the Fundamental Theorem of Algebra
A Subrecursive Refinement of the Fundamental Theorem of Algebra

... polynomial P (z).1 Clearly the following more rigorous formulation of this can be given, where F consists of all total mappings of N into N: for any positive integer N there are recursive operators Γ1 , Γ2 , Γ3 , Γ4 , Γ5 , Γ6 with domain F 6N such that whenever an element f¯ of F 6N is a representat ...
BEZOUT IDENTITIES WITH INEQUALITY CONSTRAINTS
BEZOUT IDENTITIES WITH INEQUALITY CONSTRAINTS

... Translation and Convolution Definitions: If X is a set and F is a field, F(X) denotes the vector space of F-valued functions on X under pointwise operations. If X is a group and we define translations  g : F ( X )  F ( X ), g  X ...
INTRODUCTION TO LIE ALGEBRAS. LECTURE 2. 2. More
INTRODUCTION TO LIE ALGEBRAS. LECTURE 2. 2. More

... This also follows from the Jacobi identity. Definition 2.4.4. Center of a Lie algebra L is defined by the formula Z(L) = {x ∈ L|∀y ∈ L [x, y] = 0}. By definition of ad, one has Z(L) = Ker(ad). For example, Z(n3 ) = hzi. 2.5. Simplicity of sl2 . Definition 2.5.1. A Lie algebra L is simple if it is no ...
Homework2-F14-LinearAlgebra.pdf
Homework2-F14-LinearAlgebra.pdf

... [3] Find the 3 × 3 matrix which vanishes on the vector (1, 1, 0), and maps each point on the plane x + 2y + 2z = 0 to itself. [4] Find the 3 × 3 matrix that projects orthogonally onto the line ...
The arithmetic of pseudo-Anosov mapping classes
The arithmetic of pseudo-Anosov mapping classes

... ...
.pdf
.pdf

... Problem 9. Suppose A is an Abelian group (i.e. gh = hg for all g, h ∈ A). Fix an integer n and let φn : A → A be defined by φn (g) = g n . Show φn is a homomorphism. Suppose A is finite and the order of A is coprime with n. Show φn is an isomorphism. Problem 10. An automorphism of G is an isomorphis ...
Operators and Expressions
Operators and Expressions

... character at a time from the leftmost character of each string. The ASCII values of the characters from the two strings are compared. ...
Embedded Communications in Wireless Sensor Network
Embedded Communications in Wireless Sensor Network

... use op() and nops() to access operands of MuPAD objects, draw an expression tree for an expression, tell how to use the following system functions and ...
Nondegenerate Pairings First let`s straighten out something that was
Nondegenerate Pairings First let`s straighten out something that was

... Show that g is nondegenerate. Any algebra has a pairing of the above form; if the pairing is nondegenerate the algebra is semisimple. This is either a definition or a theorem depending on your taste: if we define a semisimple algebra to be a direct sum of algebras with no nontrivial two-sided ideals ...
Quantum algebras and parity-dependent spectra
Quantum algebras and parity-dependent spectra

INTRODUCTION TO C* ALGEBRAS - I Introduction : In this talk, we
INTRODUCTION TO C* ALGEBRAS - I Introduction : In this talk, we

... ring theory) and topology (homological algebra, homotopy theory), thereby helping to answer a variety of problems. The theory of C* algebras was developed in the late 1920s by Gelfand and Naimark (with a view to solving problems in Harmonic Analysis) and by John Von Neumann (with a view to establish ...
Mathematical Operators
Mathematical Operators

... - Parentheses have the highest precedence and can be used to force an expression to evaluate in the order you want. Since expressions in parentheses are evaluated first, 2 * (3 - 1) is 4, and (1 + 1)**(5 - 2) is 8. You can also use parentheses to make an expression easier to read, as in (60 * 100) / ...
SIMG-616-20142 EXAM #1 2 October 2014
SIMG-616-20142 EXAM #1 2 October 2014

... (b) Evaluate the projection of any vector in the null subspace onto any vector “passed” by the system (c) Determine if the matrix is invertible and give reasons. 6. (40%) A shift-invariant operation acts on 4 samples of a function  [] that may be represented as a 4-element vector x. For the “first ...
Cohomology, geometric quantization and quantum information.
Cohomology, geometric quantization and quantum information.

... n + 1 dimensional irreducible representation of SU2 having spin equal to n/2; in this case there is a normal rational SU2 -invariant curve C in the projective space of dimension n, where the momentum of the diagonal action gives the Lagrangian decomposition of C in n + 1 pieces. The goal is to gener ...
UE Funktionalanalysis 1
UE Funktionalanalysis 1

... 52. Show that if {`j } ⊆ X ∗ is some total set, then xn * x if and only if xn is bounded and `j (xn ) → `j (x) for all j. Show that this is wrong without the boundedness assumption (Hint: Take e.g. X = `2 (N)). 53. Show that for f ∈ L1 (Rn ) and g ∈ Lp (Rn ), the convolution Z Z (g ∗ f )(x) = g(x − ...
4 LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
4 LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

... 14. Prove that T  A(V ) is invertible if and only if the constant term of the minimal polynomial for T is non-zero. 15. Prove that T  A(V ) is invertible if and only if whenever v1, v2, …vn are in V and linearly independent, then T(v1), T(v2), …T(vn) are also linearly independent. 16. Show that an ...
OCCUPATION NUMBER REPRESENTATION FOR BOSONS AND
OCCUPATION NUMBER REPRESENTATION FOR BOSONS AND

... Misener. But it was P. Kapitza who finally got the Nobel Prize 40 years later in 1978 for the discovery of superfluidity. Meanwhile, the Bose-Einstein condensate was predicted in 1925 by S. Bose and A. Einstein, and P.A.M. Dirac wrote his paper The Quantum Theory of the Emission and Absorption of Ra ...
Complex projective space The complex projective space CPn is the
Complex projective space The complex projective space CPn is the

... The complex projective space CPn is the most important compact complex manifold. By definition, CPn is the set of lines in Cn+1 or, equivalently, CPn := (Cn+1 \{0})/C∗, where C∗ acts by multiplication on Cn+1 . The points of CPn are written as (z0 , z1 , ..., zn ). Here, the notation intends to indi ...
Note 02
Note 02

... Increase total by 2 Assignment (right to left) Not equal • Syntax Statement terminator Case sensitive • Style one space before and after any operator meaningful name ...
ВОССТАНОВЛЕНИЕ БАЗИСА НЕПРИВОДИМОГО
ВОССТАНОВЛЕНИЕ БАЗИСА НЕПРИВОДИМОГО

... 3 The proof of the Garriman’s theorem For the given p and  = M – M= t – t ´ in Eq. (3) the number of "independent" space components RDM is determined both impossibility of build-up of tensors of a higher rank, than ω = p, in p–partial spin space, and Garriman’s theorem, proved for some cases [1]. ...
Towards a Deformation Quantization of Gravity
Towards a Deformation Quantization of Gravity

... would give a route to a mathematically welldefined formulation of quantum gravity. ...
finm314F06.pdf
finm314F06.pdf

... (e) Fill in the blanks below if possible or give a reason if not possible. (Hint: Ax as a l.c.) v3 + ...
DERIVATIONS IN ALGEBRAS OF OPERATOR
DERIVATIONS IN ALGEBRAS OF OPERATOR

... It is well known that any derivation acting on a von Neumann algebra is inner. In particular, there are no nontrivial derivations on a commutative von Neumann algebra M = L∞ (0, 1). Consider an arbitrary semifinite von Neumann algebra M and the algebra S(M) of all measurable operators affiliated wit ...
< 1 ... 34 35 36 37 38 >

Oscillator representation

In mathematics, the oscillator representation is a projective unitary representation of the symplectic group, first investigated by Irving Segal, David Shale, and André Weil. A natural extension of the representation leads to a semigroup of contraction operators, introduced as the oscillator semigroup by Roger Howe in 1988. The semigroup had previously been studied by other mathematicians and physicists, most notably Felix Berezin in the 1960s. The simplest example in one dimension is given by SU(1,1). It acts as Möbius transformations on the extended complex plane, leaving the unit circle invariant. In that case the oscillator representation is a unitary representation of a double cover of SU(1,1) and the oscillator semigroup corresponds to a representation by contraction operators of the semigroup in SL(2,C) corresponding to Möbius transformations that take the unit disk into itself. The contraction operators, determined only up to a sign, have kernels that are Gaussian functions. On an infinitesimal level the semigroup is described by a cone in the Lie algebra of SU(1,1) that can be identified with a light cone. The same framework generalizes to the symplectic group in higher dimensions, including its analogue in infinite dimensions. This article explains the theory for SU(1,1) in detail and summarizes how the theory can be extended.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report