equation 5.44 eq:lin-norm-assoc
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parts/02-mathematical-methods/03-linear-algebra-representations.tex:1090
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Supports
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depends_on
definition 12.2
Hilbert space
¶
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depends_on
definition A.278
Countably Hilbert nuclear space
¶
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depends_on
theorem A.281
Nuclear spaces embed by Hilbert–Schmidt maps; quoted
¶
- depends_on proposition A.282 The fibre maps are continuous on $\Phi$ ¶
-
depends_on
theorem A.281
Nuclear spaces embed by Hilbert–Schmidt maps; quoted
¶
-
depends_on
definition 12.32
Separable Hilbert space
¶
-
depends_on
lemma A.250
Decomposition into cyclic subspaces
¶
-
depends_on
proposition A.280
Direct-integral form of the spectral theorem
¶
- depends_on proposition A.282 The fibre maps are continuous on $\Phi$ ¶ ↺
-
depends_on
proposition A.280
Direct-integral form of the spectral theorem
¶
-
depends_on
lemma A.250
Decomposition into cyclic subspaces
¶
-
depends_on
definition 12.94
Tensor product of Hilbert spaces
¶
-
depends_on
definition 12.99
Product and entangled vectors
¶
- depends_on example 12.100 Entangled vectors exist ¶
- depends_on example 12.98 Two particles in three-dimensional space ¶
-
depends_on
proposition 12.95
The tensor inner product is well defined and
positive definite
¶
- depends_on example 12.100 Entangled vectors exist ¶ ↺
- depends_on proposition 12.96 Operators on a tensor product ¶
-
depends_on
definition 12.99
Product and entangled vectors
¶
-
depends_on
definition 10.85
Sobolev space
¶
-
depends_on
definition A.450
The space $W^{1,r}(a,b)$
¶
-
depends_on
definition A.462
The weighted space and the energy space
¶
- depends_on lemma A.463 Poincaré inequality; $B_{K}$ is an inner product ¶
-
depends_on
lemma A.453
Uniform bound and uniform Hölder continuity
¶
- depends_on theorem A.455 Compact embedding of $W^{1,r}(a,b)$ into the continuous functions ¶
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depends_on
lemma A.452
Young and Hölder
¶
- depends_on lemma A.489 Courant–Lebesgue ¶
- depends_on lemma A.463 Poincaré inequality; $B_{K}$ is an inner product ¶ ↺
- depends_on lemma A.453 Uniform bound and uniform Hölder continuity ¶ ↺
-
depends_on
definition A.462
The weighted space and the energy space
¶
-
depends_on
definition 10.87
Weak form of an elliptic problem
¶
- depends_on corollary 10.89 Existence for the elliptic problem ¶
- depends_on proposition 10.91 Dirichlet principle ¶
-
depends_on
theorem 10.88
Lax–Milgram
¶
- depends_on corollary 10.89 Existence for the elliptic problem ¶ ↺
- depends_on proposition 10.91 Dirichlet principle ¶ ↺
-
depends_on
definition A.450
The space $W^{1,r}(a,b)$
¶
-
depends_on
example 12.9
The sequence space $\ell^{2}$
¶
-
depends_on
definition 12.84
External direct sum
¶
-
depends_on
proposition 12.85
The direct sum is a Hilbert space
¶
- depends_on proposition 12.87 Expansion in an orthogonal decomposition ¶
-
depends_on
proposition 12.85
The direct sum is a Hilbert space
¶
-
depends_on
proposition 12.10
$\ell^{2}$ is complete
¶
- depends_on proposition 12.85 The direct sum is a Hilbert space ¶ ↺
- depends_on theorem 12.33 Every separable Hilbert space is $\ell^{2}$ ¶
-
depends_on
definition 12.84
External direct sum
¶
-
depends_on
example 12.11
The function space $L^{2}$
¶
-
depends_on
example 12.81
Momentum on a finite interval: a circle of self-adjoint
momenta
¶
- depends_on corollary A.274 Momentum on ${[}0,L{]}$: the circle of extensions ¶
-
depends_on
example 12.82
Momentum on the half-line: no self-adjoint extension
¶
- depends_on corollary A.275 Momentum on $[0,\infty)$: no extension ¶
- depends_on example 12.56 Multiplication by the coordinate: spectrum without eigenvectors ¶
- depends_on example 12.25 Orthogonal polynomials ¶
-
depends_on
example 12.110
The Schrödinger system
¶
- depends_on proposition A.592 The vacuum of the Schrödinger system ¶
- depends_on theorem A.579 Stone–von Neumann ¶
-
depends_on
example 12.104
The Schwartz triple
¶
- depends_on example A.283 Momentum on the line ¶
-
depends_on
proposition 12.106
The plane wave is a generalized momentum
eigenvector
¶
- depends_on example A.283 Momentum on the line ¶ ↺
- depends_on example 12.98 Two particles in three-dimensional space ¶ ↺
-
depends_on
proposition 12.102
Neither plane waves nor deltas are in $L^{2}$
¶
- depends_on example 12.104 The Schwartz triple ¶ ↺
-
depends_on
theorem 12.12
Riesz–Fischer
¶
- depends_on lemma A.464 $H_{E}$ is a Hilbert space ¶
-
depends_on
example 12.81
Momentum on a finite interval: a circle of self-adjoint
momenta
¶
-
depends_on
lemma A.254
Riemann integral of a continuous curve
¶
-
depends_on
lemma A.255
Smoothed vectors lie in the domain
¶
-
depends_on
proposition A.256
Density
¶
- depends_on proposition A.259 The generator is self-adjoint ¶
-
depends_on
proposition A.256
Density
¶
-
depends_on
lemma A.257
Integrated form of the equation of motion
¶
-
depends_on
proposition A.258
The generator is closed
¶
- depends_on proposition A.259 The generator is self-adjoint ¶ ↺
-
depends_on
proposition A.258
The generator is closed
¶
-
depends_on
lemma A.583
Absolutely convergent operator-valued integrals
¶
-
depends_on
definition A.585
The Gaussian average of the Weyl operators
¶
- depends_on theorem A.587 The Gaussian average is a non-zero projector that absorbs the Weyl operators ¶
-
depends_on
definition A.585
The Gaussian average of the Weyl operators
¶
-
depends_on
lemma A.255
Smoothed vectors lie in the domain
¶
-
depends_on
proposition 12.4
Cauchy–Schwarz and continuity of the inner product
¶
-
depends_on
corollary 12.5
Continuity of the norm and of orthogonality
¶
-
depends_on
proposition 12.17
The complement is always a closed subspace
¶
- depends_on corollary 12.19 Double complement; the density criterion ¶
- depends_on theorem 12.18 Projection theorem ¶
-
depends_on
proposition 12.17
The complement is always a closed subspace
¶
-
depends_on
lemma A.606
$F$ is entire, and is the overlap in disguise
¶
-
depends_on
lemma A.607
A zero-free entire function is an exponential
¶
- depends_on proposition A.609 The exponent is a quadratic polynomial ¶
-
depends_on
lemma A.607
A zero-free entire function is an exponential
¶
- depends_on lemma A.254 Riemann integral of a continuous curve ¶ ↺
- depends_on lemma A.583 Absolutely convergent operator-valued integrals ¶ ↺
- depends_on proposition 12.102 Neither plane waves nor deltas are in $L^{2}$ ¶ ↺
-
depends_on
theorem 25.53
Properties of the Wigner function
¶
-
depends_on
lemma A.603
Overlaps and the resolution of unity
¶
- depends_on proposition A.611 The constraint on $\Gamma$ ¶
- depends_on proposition A.604 Non-negativity forbids a vanishing overlap ¶
-
depends_on
lemma A.603
Overlaps and the resolution of unity
¶
-
depends_on
corollary 12.5
Continuity of the norm and of orthogonality
¶
-
depends_on
proposition 12.28
Convergence criterion for orthogonal series
¶
-
depends_on
theorem 12.30
Completeness, expansion, Parseval
¶
- depends_on proposition 17.26 The lattice harmonics are an orthonormal basis ¶
- depends_on proposition 12.87 Expansion in an orthogonal decomposition ¶ ↺
- depends_on proposition 12.95 The tensor inner product is well defined and positive definite ¶ ↺
- depends_on theorem A.229 Hilbert–Schmidt ¶
-
depends_on
theorem 12.44
Hilbert–Schmidt: compact self-adjoint operators
¶
- depends_on theorem A.461 Completeness in the weighted and in the energy norm ¶
- depends_on theorem A.471 Spectral decomposition and completeness in $L^{2}_{r}$ ¶
- depends_on theorem 12.33 Every separable Hilbert space is $\ell^{2}$ ¶ ↺
-
depends_on
theorem 12.30
Completeness, expansion, Parseval
¶
- depends_on proposition 12.51 The three cases are exclusive and exhaustive ¶
-
depends_on
theorem 16.70
The direct method
¶
- depends_on lemma 16.72 Convexity implies weak lower semicontinuity ¶
- depends_on theorem A.477 Douglas; Radó ¶
- depends_on theorem A.448 Tonelli ¶ ↺
- depends_on theorem 16.81 Douglas; Radó ¶
- depends_on theorem 16.73 Tonelli ¶ ↺
-
depends_on
theorem 12.14
Closest point in a closed convex set
¶
- depends_on theorem 12.18 Projection theorem ¶ ↺
- … 1 more
-
depends_on
definition A.278
Countably Hilbert nuclear space
¶
-
depends_on
proposition 12.6
Parallelogram law and polarization
¶
- depends_on theorem 12.14 Closest point in a closed convex set ¶ ↺
-
depends_on
proposition 5.28
Gram–Schmidt
¶
-
depends_on
corollary 5.29
Orthogonal decomposition
¶
-
depends_on
proposition 5.153
prop:rep-unitary-completely-reducible
¶
-
depends_on
theorem 101.62
The mixing matrix is unitary
¶
- depends_on proposition 101.63 Parameter counting, and why three generations permit $CP$ violation ¶
- depends_on theorem 103.11 GIM suppression at one loop ¶
-
depends_on
theorem 101.62
The mixing matrix is unitary
¶
- depends_on theorem 5.43 The four fundamental subspaces ¶
-
depends_on
proposition 5.153
prop:rep-unitary-completely-reducible
¶
-
depends_on
proposition 12.23
Gram–Schmidt in a Hilbert space
¶
-
depends_on
corollary 12.24
Separable spaces have countable orthonormal families
¶
- depends_on theorem 12.33 Every separable Hilbert space is $\ell^{2}$ ¶ ↺
- depends_on example 12.25 Orthogonal polynomials ¶ ↺
- depends_on proposition 12.95 The tensor inner product is well defined and positive definite ¶ ↺
-
depends_on
corollary 12.24
Separable spaces have countable orthonormal families
¶
-
depends_on
proposition 5.42
The adjoint exists, is unique, and is linear
¶
- depends_on corollary 5.82 Spectral theorem for a normal operator ¶
-
depends_on
proposition 5.155
Averaging trick
¶
- depends_on theorem 101.62 The mixing matrix is unitary ¶ ↺
-
depends_on
theorem 5.86
Simultaneous diagonalization of a definite pencil
¶
- depends_on corollary 5.89 Rayleigh–Ritz ¶
-
depends_on
proposition 5.88
Rayleigh quotient of a definite pencil
¶
-
depends_on
corollary 5.91
The operator norm of a real array
¶
- depends_on proposition 5.92 The eigenvalues do not control the norm ¶
- depends_on corollary 5.89 Rayleigh–Ritz ¶ ↺
-
depends_on
corollary 5.91
The operator norm of a real array
¶
-
depends_on
theorem 5.84
Spectral theorem for a real symmetric operator
¶
- depends_on corollary 5.91 The operator norm of a real array ¶ ↺
-
depends_on
lemma A.610
Block positivity
¶
- depends_on proposition A.611 The constraint on $\Gamma$ ¶ ↺
-
depends_on
lemma A.601
Several variables, complex symmetric matrix
¶
- depends_on proposition A.612 The dictionary between $A$ and $\Gamma$ ¶
-
depends_on
proposition A.602
The Wigner function of a Gaussian is a positive
Gaussian
¶
- depends_on proposition A.604 Non-negativity forbids a vanishing overlap ¶ ↺
-
depends_on
lemma A.600
The real part of an inverse
¶
- depends_on lemma A.601 Several variables, complex symmetric matrix ¶ ↺
- depends_on proposition A.612 The dictionary between $A$ and $\Gamma$ ¶ ↺
- depends_on proposition 5.90 Polar decomposition ¶
-
depends_on
proposition 5.94
Principal axes of a real quadratic form
¶
- depends_on proposition 5.95 The focal polar equation of a conic ¶
- depends_on proposition 5.92 The eigenvalues do not control the norm ¶ ↺
- depends_on theorem 5.86 Simultaneous diagonalization of a definite pencil ¶ ↺
-
depends_on
corollary 5.29
Orthogonal decomposition
¶
-
depends_on
proposition 5.130
An orthogonal transformation is an isometry
¶
-
depends_on
theorem 5.133
Isotropic Cartesian tensors of rank at most four
¶
-
depends_on
lemma A.742
Isotropic representation
¶
-
depends_on
corollary A.743
Two scalar functions instead of a tensor field
¶
- depends_on lemma A.748 The second-order structure function ¶
- depends_on lemma A.747 The third-order structure functions ¶
- depends_on proposition A.746 The Kármán–Howarth equation in classical form ¶
- depends_on lemma A.747 The third-order structure functions ¶ ↺
-
depends_on
lemma A.744
Vanishing of the pressure–velocity correlation
¶
- depends_on theorem A.745 Kármán–Howarth–Monin relation ¶
-
depends_on
corollary A.743
Two scalar functions instead of a tensor field
¶
-
depends_on
lemma A.671
The three products are independent
¶
-
depends_on
proposition A.673
Cubic tensors of rank four
¶
- depends_on theorem A.675 Three constants for a cubic crystal, two for an isotropic solid ¶
-
depends_on
proposition A.673
Cubic tensors of rank four
¶
-
depends_on
lemma 30.26
Isotropic Cartesian tensors of rank four
¶
-
depends_on
phenomenon 30.28
Hooke's law
¶
- depends_on phenomenon 30.32 Poisson contraction ¶
- depends_on remark 30.78 Anharmonicity: what the quadratic energy also suppresses ¶
-
depends_on
phenomenon 30.28
Hooke's law
¶
- depends_on remark A.677 The lower ranks, and why an isotropic solid is not piezoelectric ¶
- depends_on remark 30.27 Two results this chapter borrows from Part II ¶
- depends_on remark 13.7 What the classification is used for ¶
-
depends_on
lemma A.742
Isotropic representation
¶
-
depends_on
theorem 5.133
Isotropic Cartesian tensors of rank at most four
¶
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| type | direction | node | provenance | where |
|---|---|---|---|---|
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← | Hilbert space | declared | parts/02-mathematical-methods/10-hilbert-spaces.tex:74 |
depends_on |
← | Parallelogram law and polarization | declared | parts/02-mathematical-methods/10-hilbert-spaces.tex:168 |
depends_on |
← | Gram–Schmidt | declared | parts/02-mathematical-methods/03-linear-algebra-representations.tex:1312 |
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← | An orthogonal transformation is an isometry | declared | parts/02-mathematical-methods/03-linear-algebra-representations.tex:5658 |