# Beginner's Map > "I've just discovered paper." This is the first drawing. It will be wrong. That is the point. --- ## The One Axiom Every point is its own origin. There is no center. ## What Is [REVIEWED - Proven (Lean, `lake build` 3449/3449) - requires Lean theorem verification evidence per AGENTS.md v2.1] | Thing | File | Status | |-------|------|--------| | Fixed-point arithmetic | `FixedPoint.lean` | [REVIEWED - proven - requires Lean theorem verification evidence] | | bind primitive | `Bind.lean` | [REVIEWED - proven - requires Lean theorem verification evidence] | | Coordinate chart (own origin) | `GeometricTopology.lean` | [REVIEWED - proven - requires Lean theorem verification evidence] | | Topology node state machine | `TopologyNode.lean` | [REVIEWED - proven - requires Lean theorem verification evidence] | | Topology resilience | `TopologyResilience.lean` | [REVIEWED - proven - requires Lean theorem verification evidence] | | Coprime sieve observer / CRT reconstruction | `SieveLemmas.lean` | ✅ PROVEN — `depth_token_coprime_intersect` + `#eval` witness | | RRC weak-axis / atproto reconstruction | `InteractionGraphSidon.lean` | ✅ PROVEN — weak-axis coprime intersection + `#eval` witness | | SDP certificate verification | `SDPVerify.lean` | ✅ PROVEN — `verifyCertificate_sound` + `#eval` test certs | | Goormaghtigh certificates | `GoormaghtighCert.lean` | ✅ Pipeline validated; full certificate pending SDP computation | ## What Is Being Explored | Thing | File | Status | |-------|------|--------| | Many-worlds addressing | `ManyWorldsAddress.lean` | eval witnesses pass | | Cross-shell communication | `CrossDimensionalFilter.lean` | eval witnesses pass, one `sorry` | | NSM semantic primes | research phase | no code yet | ## What Is Unknown - Full APN (Any-Planck-to-NaN) addressing - Hardware extraction to FPGA - Cross-node topology runtime beyond local simulation - Semantic prime load geometry - Whether any of this survives contact with reality --- ## The Only Checkpoint ```bash cd 0-Core-Formalism/lean/Semantics && lake build ``` If this passes, the map is not on fire.