proposition 7.31 Chain rule
open in the book ·
parts/02-mathematical-methods/05-real-analysis.tex:584
· p. 213
Rests on
-
depends_on
definition 7.13
Composite function
¶
- depends_on definition 7.9 Real function ¶
-
depends_on
proposition 7.27
Differentiable implies continuous
¶
-
depends_on
definition 7.20
Continuity at a point
¶
-
depends_on
definition 7.16
Limit
¶
- depends_on definition 7.2 Absolute value ¶
- depends_on definition 7.9 Real function ¶ ↺
- depends_on equation 7.7 eq:ana-limit-left ¶
- depends_on equation 7.5 eq:ana-limit-right ¶
-
depends_on
definition 7.16
Limit
¶
-
depends_on
definition 7.26
Derivative of a function at a point
¶
- depends_on definition 7.16 Limit ¶ ↺
- depends_on definition 7.9 Real function ¶ ↺
-
depends_on
proposition 7.6
Algebra of limits
¶
-
depends_on
definition 7.4
Convergence
¶
- depends_on definition 7.2 Absolute value ¶ ↺
-
depends_on
proposition 7.3
Triangle inequality
¶
- depends_on definition 7.2 Absolute value ¶ ↺
- proves proof ch:05-real-analysis@proof-1 ¶
- proves proof ch:05-real-analysis@proof-3 ¶
-
depends_on
definition 7.4
Convergence
¶
- proves proof ch:05-real-analysis@proof-11 ¶
-
depends_on
definition 7.20
Continuity at a point
¶
- depends_on proposition 7.6 Algebra of limits ¶ ↺
- proves proof ch:05-real-analysis@proof-15 ¶
Supports
-
depends_on
corollary 7.44
Substitution and integration by parts
¶
- depends_on definition 8.8 Contour integral ¶
-
depends_on
lemma 16.20
Mixed form
¶
-
depends_on
theorem 16.35
System of Euler–Lagrange equations
¶
- depends_on proposition 16.6 The isoperimetric extremal is a circle ¶
-
depends_on
theorem 16.41
Multiplier rule for pointwise constraints
¶
- depends_on proposition 21.56 The two prescriptions and their difference ¶
-
depends_on
theorem 16.22
Euler–Lagrange
¶
-
depends_on
definition 16.62
Field of extremals; slope function
¶
- depends_on definition 23.52 Lagrangian family; caustic ¶
- depends_on remark 23.8 The action as a function, not a functional ¶
- depends_on theorem 16.63 Hilbert's invariant integral ¶
- depends_on theorem 16.64 Weierstrass' sufficient condition ¶
-
depends_on
phenomenon 30.52
Euler buckling
¶
- depends_on example 30.53 A steel rod buckles at a twentieth of its crushing load ¶
- depends_on remark 30.54 Other end conditions, and what buckling is variationally ¶
- depends_on remark 30.55 Beyond the critical load: the elastica ¶
- depends_on remark 30.68 Shells carry load in a different way ¶
- depends_on proposition 29.39 Steady precession ¶
- depends_on theorem 16.35 System of Euler–Lagrange equations ¶ ↺
-
depends_on
theorem 16.31
Natural boundary condition
¶
- depends_on remark 30.67 Germain, Kirchhoff, and the edge conditions ¶
- depends_on theorem A.691 Kirchhoff's edge conditions and the corner force ¶
- depends_on theorem 16.32 Transversality ¶
-
depends_on
definition 16.62
Field of extremals; slope function
¶
-
depends_on
theorem 16.43
Euler's rule for integral constraints
¶
- depends_on example 16.45 Two solved isoperimetric problems ¶
- depends_on proposition 16.4 The hanging chain is a catenary ¶
- depends_on proposition 16.6 The isoperimetric extremal is a circle ¶ ↺
-
depends_on
theorem 16.35
System of Euler–Lagrange equations
¶
-
depends_on
lemma 9.136
Wallis integrals
¶
-
depends_on
proposition 9.139
Series for the complete integral of the first kind
¶
- depends_on proposition 9.144 The pendulum equation at finite amplitude ¶
-
depends_on
proposition 9.139
Series for the complete integral of the first kind
¶
- depends_on proposition 7.145 Delta as a limit; elementary properties ¶
- depends_on proposition 16.50 The second variation ¶
- depends_on proposition 5.95 The focal polar equation of a conic ¶
- depends_on proposition 9.143 A cubic quadrature between two turning points ¶
- depends_on proposition 9.144 The pendulum equation at finite amplitude ¶ ↺
-
depends_on
theorem 16.38
Euler–Poisson equation
¶
-
depends_on
theorem 30.56
The beam equation
¶
- depends_on example 30.58 A steel ruler ¶
-
depends_on
proposition 30.57
Bending waves are dispersive
¶
- depends_on example 30.58 A steel ruler ¶ ↺
- depends_on remark 30.59 Where Euler–Bernoulli fails ¶
-
depends_on
theorem 30.64
The Kirchhoff plate equation
¶
- depends_on phenomenon 30.65 Chladni figures ¶
-
depends_on
proposition 30.66
Chladni scaling
¶
- depends_on phenomenon 30.65 Chladni figures ¶ ↺
- depends_on remark 30.67 Germain, Kirchhoff, and the edge conditions ¶ ↺
-
depends_on
theorem 30.56
The beam equation
¶
-
depends_on
lemma A.479
Conformal invariance of the Dirichlet integral
¶
-
depends_on
lemma A.487
The normalisation costs nothing
¶
- depends_on theorem A.492 Douglas' conformality theorem; quoted ¶
-
depends_on
lemma A.485
Conformal automorphisms of the disc
¶
- depends_on definition A.486 The normalised admissible class ¶
- depends_on lemma A.487 The normalisation costs nothing ¶ ↺
-
depends_on
lemma A.487
The normalisation costs nothing
¶
- depends_on lemma 27.15 Velocity and acceleration in plane polar coordinates ¶
- depends_on proposition 7.111 Jacobi's formula, cofactor form ¶
-
depends_on
proposition 7.63
Laws of real powers
¶
-
depends_on
definition 7.90
The golden ratio
¶
-
depends_on
proposition 7.91
The golden ratio
¶
-
depends_on
proposition 7.92
Continued fraction and the Fibonacci ratios
¶
- depends_on remark 7.95 Where $\varphi$ is used ¶
-
depends_on
proposition 125.2
Crystallographic restriction
¶
- depends_on remark 125.3 What the theorem does and does not forbid ¶
- depends_on remark 7.95 Where $\varphi$ is used ¶ ↺
- depends_on remark 7.94 Three numbers, two kinds ¶
-
depends_on
proposition 7.92
Continued fraction and the Fibonacci ratios
¶
-
depends_on
proposition 7.91
The golden ratio
¶
-
depends_on
lemma 7.67
The limit over real exponents
¶
-
depends_on
proposition 7.68
The natural base
¶
- depends_on remark 7.70 What the condition says ¶
-
depends_on
proposition 7.68
The natural base
¶
- depends_on proposition 7.68 The natural base ¶ ↺
- depends_on proposition 7.91 The golden ratio ¶ ↺
-
depends_on
proposition 7.89
Irrationality of square roots
¶
- depends_on proposition 7.91 The golden ratio ¶ ↺
-
depends_on
definition 7.90
The golden ratio
¶
- depends_on proposition 16.26 Covariance under change of dependent variable ¶
-
depends_on
proposition 10.15
Method of characteristics, first order
¶
-
depends_on
definition 10.93
Scalar conservation law
¶
-
depends_on
definition A.150
Kruzhkov entropy pair
¶
-
depends_on
lemma A.157
Two elementary identities
¶
- depends_on proposition A.159 The doubled inequality ¶
- depends_on proposition A.162 The limit $\delta\to0$ ¶
-
depends_on
proposition A.156
The Kruzhkov inequality
¶
- depends_on proposition A.159 The doubled inequality ¶ ↺
-
depends_on
theorem A.151
$L^{1}$ contraction on a cone
¶
- depends_on corollary A.152 Uniqueness ¶
-
depends_on
lemma A.157
Two elementary identities
¶
-
depends_on
definition 10.95
Weak solution of a conservation law
¶
-
depends_on
definition 10.99
Entropy condition
¶
- depends_on definition 10.101 Entropy pair; entropy inequality ¶
- depends_on definition 10.101 Entropy pair; entropy inequality ¶ ↺
- depends_on example 10.98 Weak solutions are not unique ¶
- depends_on theorem A.151 $L^{1}$ contraction on a cone ¶ ↺
- depends_on theorem 10.103 Uniqueness in the entropy class ¶
-
depends_on
theorem 10.96
Rankine–Hugoniot condition
¶
- depends_on definition 10.99 Entropy condition ¶ ↺
- depends_on example 10.97 Burgers shock ¶
- depends_on example 10.98 Weak solutions are not unique ¶ ↺
- depends_on proposition 10.102 Jump form of the entropy inequality ¶
-
depends_on
definition 10.99
Entropy condition
¶
- depends_on example 10.97 Burgers shock ¶ ↺
- depends_on proposition 10.94 Gradient catastrophe ¶
-
depends_on
definition A.150
Kruzhkov entropy pair
¶
- depends_on proposition 10.16 Cauchy's characteristic strips ¶
- depends_on proposition 10.94 Gradient catastrophe ¶ ↺
- depends_on remark 31.90 Why a compression wave must steepen ¶
- depends_on remark 23.3 What Part II owes this chapter ¶
-
depends_on
definition 10.93
Scalar conservation law
¶
-
depends_on
theorem 16.29
Beltrami identity
¶
- depends_on proposition 16.105 The optical invariant in a stratified medium ¶
- depends_on proposition 16.39 Ostrogradsky instability ¶
-
depends_on
theorem 10.8
The type is a coordinate invariant
¶
-
depends_on
lemma A.90
Affine normalization
¶
- depends_on lemma A.91 Smallness after rescaling ¶
-
depends_on
proposition 10.13
Canonical form in two variables
¶
- depends_on theorem A.83 Local canonical form for an elliptic operator with Hölder coefficients ¶
-
depends_on
theorem 10.55
d'Alembert's formula
¶
- depends_on corollary 10.56 Domain of dependence and influence ¶
-
depends_on
theorem 10.59
Kirchhoff's formula
¶
- depends_on corollary 10.60 Huygens' principle in three space dimensions ¶
-
depends_on
proposition 10.11
What a characteristic surface is
¶
-
depends_on
corollary 10.12
Characteristics of the three canonical operators
¶
- depends_on corollary 10.60 Huygens' principle in three space dimensions ¶ ↺
-
depends_on
definition A.102
Normal Cauchy problem of order $k$
¶
-
depends_on
definition A.103
First-order quasilinear system with zero data
¶
- depends_on lemma A.104 The recursion ¶
- depends_on proposition A.110 Explicit solution of the majorant problem ¶
- depends_on lemma A.105 Formal reduction of a normal problem ¶
-
depends_on
definition A.103
First-order quasilinear system with zero data
¶
- depends_on theorem 10.22 Cauchy–Kovalevskaya ¶
-
depends_on
corollary 10.12
Characteristics of the three canonical operators
¶
-
depends_on
lemma A.90
Affine normalization
¶
Neighborhood
Every logical edge within two steps of this node.
- declared and complete
- partly declared
- a check failed
- not graded
- declared in the source
- inferred from structure
Edges
| type | direction | node | provenance | where |
|---|---|---|---|---|
depends_on |
→ | Composite function | declared | parts/02-mathematical-methods/05-real-analysis.tex:589 |
depends_on |
→ | Differentiable implies continuous | declared | parts/02-mathematical-methods/05-real-analysis.tex:589 |
depends_on |
→ | Algebra of limits | declared | parts/02-mathematical-methods/05-real-analysis.tex:589 |
depends_on |
← | Substitution and integration by parts | declared | parts/02-mathematical-methods/05-real-analysis.tex:875 |
depends_on |
← | Conformal invariance of the Dirichlet integral | declared | appendices/A-long-proofs.tex:23548 |
depends_on |
← | Velocity and acceleration in plane polar coordinates | declared | parts/03-classical-mechanics/10-central-forces-statics.tex:419 |
depends_on |
← | Jacobi's formula, cofactor form | declared | parts/02-mathematical-methods/05-real-analysis.tex:3440 |
depends_on |
← | Laws of real powers | declared | parts/02-mathematical-methods/05-real-analysis.tex:1449 |
depends_on |
← | Covariance under change of dependent variable | declared | parts/02-mathematical-methods/14-calculus-of-variations.tex:746 |
depends_on |
← | Method of characteristics, first order | declared | parts/02-mathematical-methods/08-pdes.tex:435 |
depends_on |
← | Beltrami identity | declared | parts/02-mathematical-methods/14-calculus-of-variations.tex:819 |
depends_on |
← | The type is a coordinate invariant | declared | parts/02-mathematical-methods/08-pdes.tex:190 |
proves |
← | ch:05-real-analysis@proof-15 | declared | parts/02-mathematical-methods/05-real-analysis.tex:592 |