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  • Blog
    • Hardware Inference
    • DMM and DTS
    • WREN Stack
    • XOR Quantum Case Study
    • Unified Actor Architecture
    • Getting the Signal with BAREWire
    • A Vision For Unified Cognitive Architecture
    • Unexpected Fusion
    • Breaking the P vs NP Mystique
    • Abstract Machine Model Paradox
    • The Advent of Neuromorphic AI
    • Categorical Deep Learning
    • Fewer Tests; Greater Safety
    • Quantum Optionality
    • Native Reactivity in Clef
    • Hardware Lessons from LISP
    • Why Types Matter
    • DUs in Post-Transformer AI
    • Wrapping C and C++
    • HKTs Dialectic Analysis
    • Scaling FidelityUI
    • Leveraging Fabulous for Native UI
    • High Speed Inference
    • Fidelity UI Model
    • Return of the Compiler
    • Farscape Bridge
    • Window Layout System
    • Fidelity Primer
    • Ode to Erlang
    • CNN to TopOC Transfer Learning
    • Beyond Transformers
    • The Case for Actor-Oriented Architecture
    • Musings on Mojo: Partially Parallel Paths
    • Fidelity as AI Refinery
    • Pondering Python
    • The Hidden Dominance of Functional Programming
    • Rust Revisited
    • Cryptographic Certainty
  • Documentation
    • Guides
      • Getting Started
    • Reference
      • ClefPak
      • Source-Level Dependencies
      • Beyond Assemblies
    • Design Rationale
      • Memory Model
        • Spatial Mechanics
        • Gaining Closure
        • Inferring Memory Lifetimes
        • Beyond Zero-Allocation
        • Memory Management by Choice
        • RAII in Olivier and Prospero
        • Native Memory Management
      • Type System
        • Dimensional Type Safety
        • From IL to NTU
        • Posit Arithmetic
        • Traits vs SRTP
        • ByRef Resolved
      • Concurrency
        • Delimited Continuations
        • DCont/Inet Duality
        • Continuation Preservation
        • Dotnet to Fidelity Concurrency
      • Compilation
        • Getting Inline
        • Lazy Evaluation
        • Arity and Caution
        • Why Clef Fits MLIR
        • Coupling & Cohesion
      • Language Semantics
        • Managed Mutability
        • Collect Yourself
        • Absorbing Alloy
        • Clef Metaprogramming
      • Categorical Foundations
        • CDL Adjoint Correspondence
        • Posit Arithmetic & DTS
        • Forward Gradients & Exact Accumulation
        • Target Architectures
        • Quantum Substrate
        • Verification as Byproduct
        • Continuous Learning
        • Typed Recurrence
      • Interop
        • Library Binding
    • Compiler Internals
      • Coeffects and Codata
      • Proof-Aware Compilation
      • Transparent Verification
        • From Double Annotation to Discovery
        • The Decidability Sweet Spot
        • Memory Coeffect Algebra
        • From Proofs to Silicon
      • Frontend Unfuzzled
      • Leveling Up With Lattice
      • Nanopass Navigation
      • Learning to Walk
      • Seq'ing Simplicity
      • On Metal Revisited
      • RDNA and the Unified Memory Desktop
      • Baker Saturation Engine
      • Clef AutoComplete Integration
      • MLIR Testing with Teeth
      • GPU Cache-Aware Compilation
      • Cache-Conscious Memory: CPU
      • C++ Binding via Farscape
      • Hello World Goes Native
      • Hyping Hypergraphs
      • Referential Transparency
      • Context-Aware Compilation
      • Graph Coloring
      • Ternary Models Vision
      • Farscape Entry Points
      • Intelligent Tree Shaking
      • Full Frosty Experience
      • Accelerating Network Communication
      • Next-Generation Memory Coherence
      • Fidelity Lowered to STM32
  • Language Specification
    • Front Matter
    • RFC Status
    • Introduction
    • Program Structure
    • Lexical Analysis
    • Basic Grammar Elements
    • Types and Type Constraints
    • Type Representation Architecture
    • Native Type Mappings
    • Clef Type Universe Specification
    • Expressions
    • Patterns
    • Type Definitions
    • Units of Measure
    • Namespaces and Modules
    • Namespace and Module Signatures
    • Program Structure and Execution
    • Program Semantic Graph
    • Memory Regions
    • Closure Representation in Clef
    • Lazy Value Representation in Clef
    • Incremental Computation
    • Sequence Expression Representation in Clef
    • Sequence Operations Representation in Clef
    • List Operations Representation in Clef
    • Map Representation in Clef
    • Set Representation in Clef
    • Option Operations Representation in Clef
    • Access Kinds
    • Platform Bindings and System Intrinsics
    • Backend Lowering Architecture
    • Inference Procedures
    • ClefExpr: CCS Typed Expression Representation
    • Lexical Filtering
    • Special Attributes and Types
    • Error Handling
    • Interactive Development
    • NTU Conversion Model
    • Convert Intrinsic Module Specification
    • Crypto and Bits Intrinsic Modules Specification
    • Reactive Signals Module Specification
    • Features for ML Compatibility
    • The Native Library Alloy
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Fidelity Framework on GitHub

A concurrent systems language
for the AI and quantum eras

Clef targets CPU, GPU, NPU, FPGA, and other accelerators
with proof-carrying capabilities for safe realtime systems.

Read the Spec Get Started

Formal Specification

A complete language specification with normative semantics and informative design rationale.

Composer Compiler

Multi-target build orchestration for CPU, GPU, NPU, and FPGA with proof-aware compilation.

ClefPak

Source-based package management with deterministic builds and reproducible dependency resolution.

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