{
  "schema_version": "1.3.0",
  "slug": "what-temporal-coupling-invariants-prevent-interference-between-concurrent-sessions",
  "title": "What temporal coupling invariants prevent interference between concurrent sessions?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** Sessions operate concurrently on shared state, their operations can interleave, and interleaving can produce outcomes neither session expected. * **Does not apply when:** Sessions are strictly isolated, or their operatio",
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  "remnant_summary": {
    "core_distinction": "The separation between **individual session correctness** (each session's operations are locally correct) and **concurrent execution correctness** (the interleaved execution of multiple sessions produces acceptable outcomes). Relying on individual correctness creates the **Concurrency Interference**: each session behaves correctly within its own scope, but t...",
    "what_was_observed": "In concurrent agent architectures, failing to preserve temporal coupling invariants produces three primary failure modes: 1. **Read-Modify-Write Interleaving:** Session A reads value 5, Session B reads value 5, A writes 6, B writes 7. Final value is 7, but expected outcomes included 6 (A's contribution) and 7 (B's contribution). A's work is lost. 2. **Time-of-Check-to-Time-of-Use:** Session A checks that a resource i...",
    "condition_of_validity": "* **Applies when:** Sessions operate concurrently on shared state, their operations can interleave, and interleaving can produce outcomes neither session expected. * **Does not apply when:** Sessions are strictly isolated, or their operations are provably commutative (any interleaving produces the same outcome).",
    "decision_boundary": "1. **Do sessions operate on shared state concurrently?** If no, standard operations apply. If yes, proceed. 2. **Is the `operation-temporal-window-receipt` maintained?** If yes, interference windows are visible. If no, sessions can unknowingly interfere. 3. **Does `concurrency-ordering-signature` preserve the causal structure?** If yes, ordering is enforced....",
    "operational_effect": "1. **Lost-Write Prevention:** Read-modify-write interleavings are detected. 2. **TOCTOU Prevention:** Time-of-check-to-time-of-use gaps are enforced. 3. **Causal Ordering:** Concurrent sessions preserve causal structure even under interleaving."
  },
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    "DOMAIN:EPISTEMIC_PROVENANCE_AND_FEDERATION_ROUTING"
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  "composition_edges": {
    "primary_domain": "epistemic_provenance_and_federation_routing",
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    "status": "AST_AND_INVARIANT_VERIFIED",
    "syntax_valid": true,
    "code_sha256": "e1717bc77cbd9eac1ab166e36539f26d3dc8215cad1bbf304543c3483645a349",
    "verified_classes": [
      "InterferenceVerdict",
      "Operation",
      "ConcurrentState",
      "TemporalCouplingPolicy",
      "TemporalCouplingManifest",
      "TemporalCouplingGuard"
    ],
    "verified_functions": [
      "_hash",
      "evaluate_operations"
    ],
    "verified_functions_count": 2,
    "defensive_guards_count": 0,
    "raised_exceptions": [],
    "sample_fail_closed_invariants": [],
    "stdlib_dependencies": [
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    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
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}