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library-advisor

Recommend relevant Isabelle/HOL or Coq standard library theories, lemmas, and tactics based on proof goals. Use when: (1) Users need library lemmas for their proof, (2) Proof goals match standard library patterns, (3) Users ask what libraries to import, (4) Specific lemmas are needed for list/set/arithmetic operations, (5) Users are stuck and need to know what library support exists, or (6) Guidance on find_theorems/Search commands is needed. Supports both Isabelle/HOL and Coq standard libraries.

skills/library-for-proof-advisor/SKILL.md

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# Library Usage Advisor

Recommend relevant libraries, lemmas, and theories from Isabelle/HOL or Coq standard libraries based on proof goals.

## Workflow

### 1. Analyze the Proof Goal

Examine the goal to identify:
- **Domain**: Lists, sets, arithmetic, logic, etc.
- **Operations**: Specific functions or operators involved
- **Pattern**: Commutativity, associativity, distributivity, etc.
- **Complexity**: Simple property vs. complex relationship