definition 7.74 $\pi$

open in the book · parts/02-mathematical-methods/05-real-analysis.tex:1929 · p. 230

ground object -- no derivation owed

Rests on

depends_on axiom 7.1 Completeness of $\R$ ¶
depends_on lemma 7.73 $\cos 2 < 0$ ¶
- depends_on equation 7.53 eq:ana-cos-sin-series ¶
- depends_on proposition 7.52 Alternating series test ¶
  - depends_on corollary A.46 Monotone convergence ¶
    - 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-33 ¶
  - depends_on definition 7.45 Series ¶
    - depends_on definition 7.2 Absolute value ¶
    - depends_on definition 7.4 Convergence ¶
      - depends_on definition 7.2 Absolute value ¶ ↺
  - proves proof ch:05-real-analysis@proof-33 ¶
- proves proof ch:05-real-analysis@proof-48 ¶
depends_on theorem 7.23 Intermediate value theorem ¶
- depends_on axiom 7.1 Completeness of $\R$ ¶ ↺
- 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 definition 3.43 Map ¶
  - depends_on equation 7.7 eq:ana-limit-left ¶
  - depends_on equation 7.5 eq:ana-limit-right ¶
- proves proof ch:05-real-analysis@proof-8 ¶
depends_on theorem 7.51 Termwise differentiation ¶
- depends_on proposition 7.47 Comparison; absolute convergence ¶
  - depends_on corollary A.46 Monotone convergence ¶ ↺
  - depends_on definition 7.45 Series ¶ ↺
  - depends_on theorem 7.8 Cauchy criterion ¶
    - depends_on corollary A.47 Cauchy completeness ¶
      - depends_on corollary A.46 Monotone convergence ¶ ↺
      - depends_on theorem A.40 Least-upper-bound property ¶ ↺
      - proves proof app:A-long-proofs@proof-34 ¶
    - depends_on definition 7.4 Convergence ¶ ↺
    - proves proof ch:05-real-analysis@proof-5 ¶
  - proves proof ch:05-real-analysis@proof-28 ¶
- depends_on proposition 7.27 Differentiable implies continuous ¶
  - depends_on definition 7.20 Continuity at a point ¶ ↺
  - 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 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 ¶
  - proves proof ch:05-real-analysis@proof-11 ¶
- depends_on proposition 7.48 Ratio test ¶
  - depends_on proposition 7.47 Comparison; absolute convergence ¶ ↺
  - depends_on proposition 7.46 Geometric series ¶
    - depends_on corollary A.46 Monotone convergence ¶ ↺
    - depends_on definition 7.45 Series ¶ ↺
    - proves proof ch:05-real-analysis@proof-27 ¶
  - depends_on theorem 7.8 Cauchy criterion ¶ ↺
  - proves proof ch:05-real-analysis@proof-29 ¶
- depends_on proposition 7.6 Algebra of limits ¶ ↺
- depends_on theorem 7.50 Power series; radius of convergence ¶
  - depends_on axiom 7.1 Completeness of $\R$ ¶ ↺
  - depends_on proposition 7.47 Comparison; absolute convergence ¶ ↺
  - depends_on proposition 7.46 Geometric series ¶ ↺
  - proves proof ch:05-real-analysis@proof-31 ¶
- proves proof ch:05-real-analysis@proof-32 ¶

Supports

depends_on lemma 7.75 The first quadrant ¶
- depends_on proposition 7.76 $\pi$ as the circle constant ¶
- depends_on proposition 7.77 Special values, periodicity, and the kernel ¶
  - depends_on lemma 7.78 Chord, arc, tangent ¶
    - depends_on proposition 7.79 The polygon recursion ¶
      - depends_on corollary 7.81 The decimal expansion of $\pi$ ¶
      - depends_on proposition 7.83 Viète's product ¶
      - depends_on remark 7.82 What Archimedes proved ¶
      - depends_on remark 7.80 Why these are the polygon perimeters ¶
      - depends_on remark 7.84 One construction, two faces ¶
  - depends_on proposition 7.85 Irrationality of $\pi$ ¶
    - depends_on remark 7.94 Three numbers, two kinds ¶
    - depends_on remark 7.87 Priority, and what irrationality does not give ¶
  - depends_on proposition 7.79 The polygon recursion ¶ ↺
  - depends_on proposition 7.83 Viète's product ¶ ↺
  - depends_on proposition 125.2 Crystallographic restriction ¶
    - depends_on remark 125.3 What the theorem does and does not forbid ¶
  - depends_on remark 7.88 $\pi$ elsewhere in this treatise ¶
- depends_on proposition 125.2 Crystallographic restriction ¶ ↺
depends_on proposition 7.76 $\pi$ as the circle constant ¶ ↺
depends_on proposition 7.79 The polygon recursion ¶ ↺
depends_on proposition 7.77 Special values, periodicity, and the kernel ¶ ↺
depends_on proposition 125.2 Crystallographic restriction ¶ ↺

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`	→	Completeness of $\R$	declared	parts/02-mathematical-methods/05-real-analysis.tex:1947
`depends_on`	→	$\cos 2 < 0$	declared	parts/02-mathematical-methods/05-real-analysis.tex:1947
`depends_on`	→	Intermediate value theorem	declared	parts/02-mathematical-methods/05-real-analysis.tex:1947
`depends_on`	→	Termwise differentiation	declared	parts/02-mathematical-methods/05-real-analysis.tex:1947
`depends_on`	←	The first quadrant	declared	parts/02-mathematical-methods/05-real-analysis.tex:1976
`depends_on`	←	$\pi$ as the circle constant	declared	parts/02-mathematical-methods/05-real-analysis.tex:2007
`depends_on`	←	The polygon recursion	declared	parts/02-mathematical-methods/05-real-analysis.tex:2198
`depends_on`	←	Special values, periodicity, and the kernel	declared	parts/02-mathematical-methods/05-real-analysis.tex:2077
`depends_on`	←	Crystallographic restriction	declared	parts/12-statistical-mechanics/08-phonons-lattices.tex:127