Description
Quadratic family f_c(z) = z² + c. Filled Julia set K_c = {z : f_cⁿ(z) ↛ ∞}; Julia set J_c = ∂K_c. Mandelbrot set M = {c ∈ ℂ : 0 ∈ K_c} = {c : critical orbit bounded}. Douady coined the name "Mandelbrot set." Parameter space (c-plane) vs dynamic plane (z-plane). M compact, contained in |c| ≤ 2. Foundation for Douady-Hubbard theory.
Source: Wikipedia; Hubbard & Douady; Milnor
Dependency Flowchart
graph TD
DefFc["Def: Quadratic family\nf_c(z) = z² + c"]
DefKc["Def: Filled Julia set K_c\n{z : orbit bounded}"]
DefJc["Def: Julia set J_c\n= ∂K_c"]
DefM["Def: Mandelbrot set M\n{c : 0 ∈ K_c}"]
LemCrit["Lem: Critical point 0\nOnly critical point"]
ThmEquiv["Thm: M = {c : K_c connected}\nDouady-Hubbard"]
ThmCompact["Thm: M compact\nM ⊆ D(0,2)"]
DefParam["Def: Parameter space\nc-plane"]
DefDyn["Def: Dynamic plane\nz-plane, f_c iteration"]
DefFc --> DefKc
DefFc --> DefJc
DefKc --> DefJc
DefKc --> DefM
LemCrit --> DefM
DefM --> ThmEquiv
DefM --> ThmCompact
DefFc --> DefParam
DefFc --> DefDyn
classDef definition fill:#b197fc,color:#fff,stroke:#9775fa
classDef theorem fill:#51cf66,color:#fff,stroke:#40c057
classDef lemma fill:#74c0fc,color:#fff,stroke:#4dabf7
class DefFc,DefKc,DefJc,DefM,DefParam,DefDyn definition
class ThmEquiv,ThmCompact theorem
class LemCrit lemma
Color Scheme
Blue Definitions
Teal Theorems
Purple Lemmas
Process Statistics
- Nodes: 10
- Edges: 12
- Definitions: 6
- Lemmas: 1
- Theorems: 2