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Check that direction of first/second derivative operators is within the dimension of the grid. Add 1D functions for first/second derivative operators that take a direction.
author Vidar Stiernström <vidar.stiernstrom@gmail.com>
date Fri, 20 Feb 2026 12:01:05 +0100
parents 40dffe6e2ecb
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# Matrix and tensor representations

Sparse matrix and sparse tensor representations of lazy tensors can be constructed by loading [Tokens.jl](http://) and one of SparseArrays.jl or [SparseArrayKit.jl](http://). Through package extensions the following methods `sparse(::LazyTensor)` and `SparseArray(::LazyTensor)` are provided.

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