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Notes tagged “formal-methods”

Every note filed under formal-methods, newest first.

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2026

  1. Don't Write the Policy. Derive It.

    A security policy is a claim about every case you did not think of. State the invariant instead, enumerate what the system can actually do, and let a model checker hand you the counterexample.

    security formal-methods tla-plus alloy web verification dissecting-systems