Dimensional quantities

Owner import path¶

jaxstro.quantity

Purpose¶

Implemented dimensional quantity evaluation, unit parsing and registries, conversion, serialization, constants, and equivalencies.

Public records and callables¶

Quantity, Unit, Dimension, UnitRegistry, their typed errors, concrete units and dimensions, get_unit, format_unit, parse_unit, serialization helpers, and the public constants, equivalencies, astro, bases, and units modules.

Shape and dtype expectations¶

Quantity values are JAX-compatible arrays. Unit and dimension objects are static metadata at traced boundaries.

JAX transforms and AD classification¶

Value conversion composes with JAX transforms when units are fixed. Parsing, registry mutation, and dimensional validation are host-side.

Failure behavior¶

Dimension, conversion, equivalency, parsing, and registry failures use explicit typed exceptions. Ecosystem adoption remains deferred; this page is not a cutover announcement.

Contract and evidence links¶

See Unit systems and quantity adoption, Quantities, units, and dimensional boundaries, and ADR 0006 - Build own Quantity, not unxt/quax.

Canonical import example¶

from jaxstro.quantity import Quantity