The open epistemic specification language for AI reasoning.
Built on GEM² — axiomatic foundation, geometric ontology,
contract-driven verification.
Platform-agnostic. Formally grounded.
Built to make AI know what it doesn't know.
Three documents form the complete public reference. GEM² Core is the axiomatic foundation. PSL is the full specification. The field manual shows how to apply it.
Same information. One version is auditable. One isn't.
Without TPMN
This architecture scales well and will handle production load. The latency will stay under 50ms at peak traffic. The team agrees this is the right approach.
With TPMN
This architecture handled 10k RPS in staging ⊢.
Production load is estimated at 15k RPS ⊨ (Q3 traffic model).
Latency under 50ms at peak ⊬ (no production benchmark yet).
Team consensus on approach ⊨ (3 of 4 engineers).
The 5 epistemic symbols
Every non-trivial claim in a TPMN-governed output carries exactly one tag.
⊢
Grounded
Directly supported by input or verifiable fact
⊨
Inferred
Derived from grounded claims; inference chain visible
⊬
Extrapolated
Beyond evidence; basis must be explicitly stated
⊥
Unknown
Knowledge gap; stops inference chain
?
Speculative
Possible but unverified
Geometric ontology
Two vocabularies map to Kant's noumenon / phenomenon distinction. Ontological terms name what beings ARE. Topological terms name how beings APPEAR in relation.
Ontological — noumenal
point
0D — atomic element
An entity. David, gem2-lfs, the Q3 report.
line
1D — directional vector
A verb, adjective, adverb. Failing, decomposing, becoming-stable.
face
2D — bounded local complex space ℂF
An independent space defined by CONTRACT. Humans, valid functions, completed work-plans.
Topological — phenomenal
STATE
point ∈ face
Membership relation. David is human. The WP is COMPLETED.
STATUS
vector at point
Continuous, directional. The WP is becoming complete. The build is running.
SET
subset within face
Recognized category. The set of completed WPs. Valid inputs.
Three-phase checking protocol
P-phase draws the boundary. Inline executes within it. O-phase judges the edge crossing. Operational form of human-at-the-edge.
P-phase · Boundary
Pre-flight
Extract CONTRACT from prompt. Establish A_Priori_Grid. Define the bounded face before inference begins.
Inline · Sovereign
Generation
Producer operates autonomously inside F. Tag every non-trivial claim with its epistemic symbol. Sovereignty within the contract boundary.
O-phase · Edge
Post-flight
Verify output against CONTRACT. Check SPT violations. Audit the edge crossing. Gate or pass.