* Package name    : r-cran-calculus
   Version         : 1.0.1
   Upstream Author : Emanuele Guidotti <emanuele.guidotti@unine.ch>
* URL             : https://cran.r-project.org/package=calculus
* License         : GPL-3
   Programming Lang: GNU R
   Description     : High Dimensional Numerical and Symbolic Calculus

Efficient C++ optimized functions for numerical and symbolic calculus as
described in Guidotti (2022). It includes basic arithmetic, tensor
calculus, Einstein summing convention, fast computation of the
Levi-Civita symbol and generalized Kronecker delta, Taylor series
expansion, multivariate Hermite polynomials, high-order derivatives,
ordinary differential equations, differential operators (Gradient,
Jacobian, Hessian, Divergence, Curl, Laplacian) and numerical
integration in arbitrary orthogonal coordinate systems: cartesian,
polar, spherical, cylindrical, parabolic or user defined by custom scale
factors.

I found this package useful at my $DAYJOB.

Remark: This package is to be maintained with Debian R Packages
Maintainers at
https://salsa.debian.org/r-pkg-team/r-cran-calculus