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# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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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: 0.7.1
identifiers:
- type: doi
  value: 10.32614/CRAN.package.nabla
abstract: Exact automatic differentiation for R functions. 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 any order. Works
  through any R code including loops, branches, and control flow.
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 0.7.1
  url: https://github.com/queelius/nabla
repository: https://queelius.r-universe.dev
repository-code: https://github.com/queelius/nabla
commit: 0e1ef3ca9412c545afe9f925aaaec2e1e526315b
url: https://metafunctor.com
date-released: '2026-02-26'
contact:
- family-names: Towell
  given-names: Alexander
  email: queelius@gmail.com
  orcid: https://orcid.org/0000-0001-6443-9897