theorem 17.22 Fejér

open in the book · parts/02-mathematical-methods/15-fourier-integral-transforms.tex:897 · p. 682

Rests on

depends_on lemma 17.6 Dirichlet kernel ¶
- depends_on definition 17.1 Fourier coefficients and Fourier series ¶
- depends_on lemma 17.2 Orthogonality of the harmonics ¶
  - depends_on definition 17.1 Fourier coefficients and Fourier series ¶ ↺
  - proves proof ch:15-fourier-integral-transforms@proof-1 ¶
- proves proof ch:15-fourier-integral-transforms@proof-4 ¶
depends_on theorem 7.25 Heine–Cantor: uniform continuity ¶
- depends_on proposition 7.22 Sequential characterization ¶
  - 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 7.4 Convergence ¶
    - depends_on definition 7.2 Absolute value ¶ ↺
  - proves proof ch:05-real-analysis@proof-7 ¶
- depends_on theorem 7.7 Bolzano–Weierstrass ¶
  - depends_on corollary A.45 Archimedean property and density of $\Q$ ¶
    - depends_on definition A.36 Cut ¶
    - depends_on theorem A.40 Least-upper-bound property ¶
      - depends_on definition A.36 Cut ¶ ↺
      - depends_on definition A.38 Order on $\R$ ¶
      - proves proof app:A-long-proofs@proof-29 ¶
    - proves proof app:A-long-proofs@proof-32 ¶
  - depends_on corollary A.46 Monotone convergence ¶
    - depends_on theorem A.40 Least-upper-bound property ¶ ↺
    - proves proof app:A-long-proofs@proof-33 ¶
  - proves proof ch:05-real-analysis@proof-4 ¶
- proves proof ch:05-real-analysis@proof-10 ¶
proves proof ch:15-fourier-integral-transforms@proof-16 ¶

Supports

depends_on corollary 17.23 Density, uniqueness, and no overshoot ¶
depends_on proposition 17.26 The lattice harmonics are an orthonormal basis ¶
depends_on theorem 17.34 Parseval's identity for series ¶
- depends_on proposition 28.48 Modal energy ¶
- depends_on theorem 17.80 Sampling theorem ¶
  - depends_on corollary 17.107 How many projections ¶

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
`cites`	→	Untersuchungen über Fouriersche Reihen	derived	parts/02-mathematical-methods/15-fourier-integral-transforms.tex:907
`depends_on`	→	Dirichlet kernel	declared	parts/02-mathematical-methods/15-fourier-integral-transforms.tex:908
`depends_on`	→	Heine–Cantor: uniform continuity	declared	parts/02-mathematical-methods/15-fourier-integral-transforms.tex:908
`depends_on`	←	Density, uniqueness, and no overshoot	declared	parts/02-mathematical-methods/15-fourier-integral-transforms.tex:952
`depends_on`	←	The lattice harmonics are an orthonormal basis	declared	parts/02-mathematical-methods/15-fourier-integral-transforms.tex:1031
`depends_on`	←	Parseval's identity for series	declared	parts/02-mathematical-methods/15-fourier-integral-transforms.tex:1381
`proves`	←	ch:15-fourier-integral-transforms@proof-16	declared	parts/02-mathematical-methods/15-fourier-integral-transforms.tex:911