Routing systems, protocol lineage, and agents on the network, with Lagrange origin and archive work labelled honestly, not as abandoned or falsely live.
OTC FX routing algorithms and arbitrage systems powering the matching and route surfaces
Production Bellman-Ford routing with line-graph transformation. Finds optimal paths across OTC FX pairs using negative-log-weight rate encoding. Negative cycles identify arbitrage opportunities when rate data is coherent and fresh.
bellman-ford · routing · production
Pearson log-return correlation on FX rate time series, transformed into metric distances. Builds Minimum Spanning Tree (MST) and PMFG for filtered topology. Core-periphery analysis identifies systemically important currencies.
correlation · mst · pmfg
Cross-venue arbitrage detector monitoring bid/ask spreads across multiple price sources. Fee-adjusted opportunity scoring with configurable minimum spread threshold.
algorithms · arbitrage · multicurrency
Genetic algorithm route optimizer from the Lagrange era. Evolutionary search over candidate currency cycles - population selection, crossover, and mutation. Concepts informed later production routing; not a separate live product surface.
algorithms · arbitrage · lagrange
Currency triangle arbitrage using Bellman-Ford negative-cycle detection. Identifies when Rate(A→B) × Rate(B→C) × Rate(C→A) exceeds 1.0 plus fees across OTC FX pairs. General cycle detection is live; a dedicated triangular detector remains a planned specialization.
algorithms · arbitrage · routing
Scoring, pathfinding lineage, and network health infrastructure on the current stack
Dijkstra shortest-path demo on the OTC FX currency graph. Shows how weighted directed graphs model FX rate networks before the full Bellman-Ford routing engine. Kept as reference lineage, not the production router.
graph · routing · optimization
Weighted magnitude times breadth, synthesizing Florin, Joule, and HoW contribution types. MeritRank for Sybil-tolerant reputation. HHI diversity bonus rewarding breadth over concentration.
scoring · meritrank · production
R₀ contagion index, network temperature (Boltzmann), algebraic connectivity λ₂ (Fiedler), Shannon entropy, and Gini coefficient. Surfaces on the dashboard for risk reporting.
health · risk · production
Where the system began (2021-2023). Lagrange proved OTC FX matching, institutional connectivity, and route search on Solana/Serum - those ideas evolved into the ƒxyz routing graph, not a discarded side project.
Solana/Serum matching interface optimized for stablecoin pairs. Established the retail swap surface and multi-source liquidity framing that later became graph-native routing.
solana · stablecoins · matching · lagrange
Professional OTC FX analysis interface with TradingView charts, market depth display, and wallet integration. Professional desk patterns from this era inform current operator surfaces.
solana · professional · analysis · lagrange
React trading UI with TradingView Advanced Charts, Solana Web3.js, and Serum venue integration. Match-level depth and on-chain order execution for the Lagrange desk. Preserved as historical product work - not a maintained ƒxyz app.
solana · trading-ui · lagrange · archive
Historical FIX and institutional connectivity work. Discoverable as a museum of what was built; not presented as a live FIX session or maintained production gateway.
FIX gateway bridging traditional order entry to on-chain matching (OpenBook/Serum era). Public historical repository from the Lagrange line - dormant after the Serum venue collapse; no live FIX session runs in the current stack.
fix · protocol · institutional · archive
FIX protocol reference material assembled during Lagrange institutional integration. Historical documentation corpus, not an active product surface.
fix · protocol · documentation · archive
FIX 4.4 session management, order routing, and price aggregation concepts from the Lagrange era. Institutional connectivity patterns evolved into the current multi-chain bridge architecture; there is no active FIX session in apps or packages today.
protocol · institutional · fix · archive
Active external standards and ontologies the graph builds on - not retired Lagrange products.
Financial Industry Business Ontology (FIBO) - an external industry foundation. ƒxyz maps currencies, legal entities, instruments, and market infrastructure against FIBO semantics in OWL/RDF. Maintained by the broader FIBO community; integrated here as semantic substrate.
ontology · fibo · knowledge · external
Letta-powered stateful agents with persistent memory and autonomous capabilities
Production Fixie agents built on Letta. Three agents: Florin (market analysis, arbitrage detection), Cypher (graph queries, data retrieval), and Sentinel (compliance monitoring, risk alerts). Stateful memory across sessions.
letta · stateful · production
Docs and the member app for algorithms, settlement integrations, and agent surfaces.