```mermaid
flowchart TB
subgraph "Zagreb Graph Library Components"
Core["Core Graph Structure"]
Zagreb["Zagreb Index Calculation"]
Hamilton["Hamiltonian Properties"]
Analysis["Network Analysis"]
end
subgraph "Graph Operations"
Create["Create Graph"]
AddEdge["Add Edge"]
Calculate["Calculate Properties"]
CheckHamiltonian["Check Hamiltonian Properties"]
NetworkAnalyze["Analyze Network"]
end
subgraph "Graph Types"
Complete["Complete Graph"]
Cycle["Cycle Graph"]
Star["Star Graph"]
Path["Path Graph"]
Arbitrary["Arbitrary Graph"]
end
subgraph "Applications"
GossipOpt["Gossip Protocol Optimization"]
LeaderRotation["Leader Rotation Efficiency"]
Resilience["Network Resilience Planning"]
Sharding["Sharding Efficiency"]
end
%% Core library structure
Core --> Zagreb
Core --> Hamilton
Core --> Analysis
%% Operations
Create --> Core
AddEdge --> Core
Core --> Calculate
Calculate --> Zagreb
Zagreb --> CheckHamiltonian
Hamilton --> CheckHamiltonian
Calculate --> NetworkAnalyze
Analysis --> NetworkAnalyze
%% Graph types influence analysis
Complete --> Hamilton
Cycle --> Hamilton
Star --> Hamilton
Path --> Hamilton
Arbitrary --> Zagreb
%% Applications of the library
CheckHamiltonian --> GossipOpt
NetworkAnalyze --> GossipOpt
CheckHamiltonian --> LeaderRotation
NetworkAnalyze --> Resilience
NetworkAnalyze --> Sharding
classDef core fill:#f9d5e5,stroke:#333,stroke-width:2px
classDef operations fill:#eeeeee,stroke:#333,stroke-width:1px
classDef applications fill:#d5f9e5,stroke:#333,stroke-width:2px
classDef graphTypes fill:#e5d5f9,stroke:#333,stroke-width:1px
class Core,Zagreb,Hamilton,Analysis core
class Create,AddEdge,Calculate,CheckHamiltonian,NetworkAnalyze operations
class Complete,Cycle,Star,Path,Arbitrary graphTypes
class GossipOpt,LeaderRotation,Resilience,Sharding applications
```