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José Luis Delgado
Lean Formal Methods Invariants

Formal Stack Models

Lean-oriented formalization work for reasoning about stack behavior, invariants, and the gap between executable systems and proof-carrying claims.

2026
Formal modeling

Problem

Security arguments often depend on small state transitions that are easy to describe informally and hard to preserve under implementation pressure.

Technical record

This line of work explores compact formal models that make the state, operations, and invariants explicit enough to be reviewed and extended.

Use

Formalization turns broad security statements into smaller objects: state, transitions, invariants, and proof obligations.