Production Operating Systems (PPOS)
Formal Specification + Field Implementation
A formally verified production workflow system — lifecycle automata, invariant-preserving concurrency, NP-hard batch optimization, supervisory control, and crash-proof event sourcing.
Why Your Production Floor Needs a Formal Specification
Part 1 of the PPOS series. You wouldn't deploy software without a spec. Why do we run production operations: where real money and real products are at stake. On informal process documents?
13 States, Zero Ambiguity: Designing a Production Lifecycle Automaton
Part 2 of the PPOS series. Every production workflow is secretly a finite state machine. Making it explicit eliminates the class of errors caused by 'I thought the rule was different.'
Proving Your Workflow Can't Break: Invariant Theory for Production Systems
Part 3 of the PPOS series. Nine invariants that must hold at all times, proven to survive concurrent operations. This is what separates a workflow from a specification.
The NP-Hard Problem Hiding in Your Batch Schedule
Part 4 of the PPOS series. Optimal production batching reduces to bin packing, which is NP-hard. Here's what that means practically and how greedy heuristics get you close enough.
Your Production Floor Is a Cyber-Physical System (Act Like It)
Part 5 of the PPOS series. When you frame production operations as a discrete event system under supervisory control, you get formal safety guarantees that no amount of process documentation can provide.
Crash-Proof Operations: Event Sourcing and Distributed Consistency for Manufacturing
Part 6 of the PPOS series. When your production system crashes mid-transaction, what happens to your data? Event sourcing and exactly-once semantics give you a deterministic answer.
Margin Entropy: Why Personalization Variety Has a Hidden Cost
Part 7 of the PPOS series. Shannon entropy applied to personalization variety reveals a linear relationship between product diversity and overhead. Plus: a formal governance algebra that prevents unauthorized workflow modifications.
Stress-Testing a Formally Verified Production System
Part 8 of the PPOS series. Proofs tell you the system should work. Monte Carlo simulation tells you it does work. Under load, under failure, and under adversarial conditions.