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Release Notes

Current Development

Current development includes:

v0.7.0

This release updates the minimum supported version of Julia and updates the Chebyshev preconditioner.

Enhancements:

  • Added Chebyshev polynomials of the 4th kind

v0.6.1

This release fixes static analysis warnings and minor style/formatting inconsistencies.

v0.6.0

This release includes conformal maps for bases, new operator convenience constructors, and small internal improvements.

Enhancements:

  • Added conformal maps sausage_transformation, kosloff_talezer_transformation, and hale_trefethen_strip_transformation for basis quadrature spaces.
  • Add advection and SUPG advection operator convenience constructor and examples.
  • Switch to FastGaussQuadrature package for computing nodes, quadrature points, and quadrature weights.

Bugfixes:

v0.5.0

This release include some minor fixes and some convenience utilities.

Breaking change:

  • Keyword argument indicating quadrature point placement for Basis convenience constructors renamed.

Enhancements:

  • Added computesymbolsoverrange to facilitate common analysis.

Bugfixes:

  • Fix language surrounding quadrature, consistently using Gauss-Legendre and Gauss-Legendre-Lobatto or gaussquadrature and gausslobattoquadrature.

v0.4.1

This release includes a small fix for properly handling stretched meshes, such as when dx != dy.

v0.4.0

This release includes improved functionality and bugfixes.

Enhancements:

  • Added relaxation parameter for application of BDDC preconditioners

Bugfixes:

  • Minor spelling and notation errors corrected
  • Newton tolerance for quadrature point computation relaxed
  • Identity preconditioner modified for compatibility with multigrid
  • Fix computation of change of coordinates for gradient and quadrature weights
  • Fix computation of eigenvalue estimates and error iteration for Chebyshev smoother
  • Fix injection operator for Dirichlet BDDC

Examples:

  • Added linear elasticity example, renumbered Neo-Hookean hyperelasticity example

v0.3.0

This release includes updated functionality and an interface change.

Breaking change:

  • Refactor GalleryOperator; now GalleryVectorOperator and GalleryMacroElementOperator included

Functionality improvement:

  • Initial implementations of lumped and Dirichlet BDDC preconditioners added

v0.2.2

Relax compatibility requirement to Julia 1.3 - 1.6.

v0.2.1

Minor bugfixes:

  • Gauss and Gauss-Lobatto node computation tolerances relaxed
  • Typo fixes
  • src directory reorganized to better support future development

v0.2

This release includes updated functionality and an improved interface.

Functionality updates include:

  • Macro-element bases consisting of multiple micro-elements
  • Chebyshev preconditioning analysis
  • H-multigrid analysis

Interface improvements include:

  • Multi-component basis support simplified

Additional changes include:

  • Improved documentation
  • Expanded examples, to include Neo-Hookean hyperelasticity
  • Rename primary branch to main

v0.1.1

Minor bugfixes.

v0.1

This release includes initial basic functionality of LFAToolkit.jl.

Functionality includes:

  • User defined second order PDEs
  • Arbitrary basis order, dimension, and number of components
  • Independent mesh scaling in each dimension
  • Jacobi preconditioning analysis
  • P-multigrid analysis