# ------------------------------------------------
# CITATION.cff file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
# ------------------------------------------------
 
cff-version: 1.2.0
message: 'To cite package "nabla" in publications use:'
type: software
license: MIT
title: 'nabla: Exact Derivatives via Automatic Differentiation'
version: 0.7.2
identifiers:
- type: doi
  value: 10.32614/CRAN.package.nabla
abstract: Automatic differentiation for R functions written with supported scalar
  arithmetic and mathematical operations. Provides a composable derivative operator
  D that computes gradients, Hessians, Jacobians, and arbitrary-order derivative tensors
  at machine precision. D(D(f)) gives Hessians, D(D(D(f))) gives third-order tensors
  for skewness of maximum likelihood estimators, and so on to higher orders. Supports
  loops and executed branches composed of supported operations. Uses nested dual numbers
  without finite difference truncation error; floating-point rounding and conditioning
  still affect results.
authors:
- family-names: Towell
  given-names: Alexander
  email: queelius@gmail.com
  orcid: https://orcid.org/0000-0001-6443-9897
preferred-citation:
  type: manual
  title: 'nabla: Exact Derivatives via Automatic Differentiation'
  authors:
  - family-names: Towell
    given-names: Alexander
    orcid: https://orcid.org/0000-0001-6443-9897
    email: queelius@gmail.com
  year: '2026'
  notes: R package version 0.7.2
  url: https://github.com/queelius/nabla
repository: https://cran.r-universe.dev
repository-code: https://github.com/queelius/nabla
commit: 2c225a419a9b9a1adc2f9d65d413f7b5b1e0742b
url: https://metafunctor.com
date-released: '2026-10-28'
contact:
- family-names: Towell
  given-names: Alexander
  email: queelius@gmail.com
  orcid: https://orcid.org/0000-0001-6443-9897