Hijax enables custom type definitions within JAX transformations
July 12, 2026
Hijax introduces HiType to allow users to define domain-specific types that behave as single units during JAX transformations. This enables custom tangent types for derivatives, specialized batching logic for vmap, and the integration of sharding information directly into the type system.
HOW THIS AFFECTS YOU
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builderYou can implement more robust data abstractions that maintain internal invariants during JAX tracing.
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researcherYou can now design complex mathematical structures with custom tangent spaces and differentiation rules.