Hello everyone! This is deal.II newsletter #342. It automatically reports recently merged features and discussions about the deal.II finite element library.
## Below you find a list of recently proposed or merged features: #19192: ReferenceCell: make things consistent with connectivity.h. (proposed by drwells) https://github.com/dealii/dealii/pull/19192 #19191: Extract implementations of the Arkode wrapper and some of its internal classes to template files (proposed by vovannikov) https://github.com/dealii/dealii/pull/19191 #19190: fix documentation of FE_DGQ (proposed by richardschu; merged) https://github.com/dealii/dealii/pull/19190 #19187: Do not configure with Trilinos 17 or later. (proposed by marcfehling) https://github.com/dealii/dealii/pull/19187 #19185: Fixed a changelog entry. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/19185 #19183: Convert simplex to Hex meshes (proposed by dominiktassilostill; merged) https://github.com/dealii/dealii/pull/19183 #19181: Better document the AMG preconditioners. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19181 #19180: Reword something in step-9. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19180 #19179: TpetraWrappers::SparsityPattern: Don't check for global properties before compress (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/19179 #19178: More changes to connectivity.h. (proposed by bangerth) https://github.com/dealii/dealii/pull/19178 #19177: Update a changelog entry. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19177 #19176: Export std::void_t from dealii.external.std (proposed by mathsen; merged) https://github.com/dealii/dealii/pull/19176 #19175: Do not allow writing into ghosted Trilinos vectors (part 2). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19175 #19174: Do not allow writing into ghosted Trilinos vectors via VectorReference objects. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19174 #19173: Improve test. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19173 #19172: update tests/matrix_free_kokkos/laplace_gmg_01 (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/19172 #19171: Rewrite logic used to deal with orientation of faces in `ReferenceCell` (proposed by AndSte01) https://github.com/dealii/dealii/pull/19171 #19169: Add functions `standard_to_real_quad_vertex/line`. (proposed by AndSte01) https://github.com/dealii/dealii/pull/19169 #19167: Made some tables in `standard_to_real_face_line()` to private attributes to allow for shared usage. (proposed by AndSte01; merged) https://github.com/dealii/dealii/pull/19167 #19163: Rename variables. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19163 #19162: Rename the CRS class. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19162 #19161: Rework algorithms in `execute_refinement_isotropic(...)` to also work with cells that have multiple face types. (proposed by AndSte01) https://github.com/dealii/dealii/pull/19161 #19160: CMake: Bugfix: add missing test dependency on ${_source_file} (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/19160 #19159: Fix missing-brace warning with g++ (proposed by Rombur; merged) https://github.com/dealii/dealii/pull/19159 #19158: github-actions: Added check for merge commits in feature branch. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/19158 #19157: clarify assert message for FERaviartThomasNodal matrix-free evaluation (proposed by richardschu; merged) https://github.com/dealii/dealii/pull/19157 #19154: Add missing definition of `new_isotropic_child_cell_vertices()` for hexes. (proposed by AndSte01; merged) https://github.com/dealii/dealii/pull/19154 #19153: Added back assertions to check whether the desired refinement method is viable. (proposed by AndSte01; merged) https://github.com/dealii/dealii/pull/19153 #19149: DataOut: Support non-contiguous distributed vectors via ReadWriteVector (proposed by mathsen; merged) https://github.com/dealii/dealii/pull/19149 #19015: Added mask to ROL Wrapper. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/19015 #18987: Matrix free evaluators for Nedelec Elements (depends on PR #18974) (proposed by nataneb; merged) https://github.com/dealii/dealii/pull/18987 #17331: Add MueLu interface to TpetraWrappers (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/17331 ## And this is a list of recently opened or closed discussions: #19189: Regression tester regressed 89c089 (opened) https://github.com/dealii/dealii/issues/19189 #19188: FPE exception (opened) https://github.com/dealii/dealii/issues/19188 #19186: MatrixFreeOperators::CellwiseInverseMassMatrix Class does not support n_component >= dim+2 with inverse_coefficients? (opened) https://github.com/dealii/dealii/issues/19186 #19184: github-actions: Declutter workflows (opened) https://github.com/dealii/dealii/issues/19184 #19182: Regression tester regressed 96f514 (opened) https://github.com/dealii/dealii/issues/19182 #19170: Support for Isotropic Refinement of Wedges and Pyramids (opened) https://github.com/dealii/dealii/issues/19170 #19168: Regression tester regressed 1310e5 (opened and closed) https://github.com/dealii/dealii/issues/19168 #19166: Add function to get the index of a 2D faces child in an orientation aware manner. (opened) https://github.com/dealii/dealii/issues/19166 #19165: Regression tester regressed 0af534 (opened and closed) https://github.com/dealii/dealii/issues/19165 #19164: Proposal: Tutorial on Classical Mass Scaling for explicit FEM simulations (opened) https://github.com/dealii/dealii/issues/19164 #19094: Places where we use modifying operations on ghosted vectors. (closed) https://github.com/dealii/dealii/issues/19094 #19073: Problem with postprocessor get_cell() documentation (closed) https://github.com/dealii/dealii/issues/19073 #19063: TrilinosWrappers::Vector::operator+=() does not check whether the vector is ghosted. (closed) https://github.com/dealii/dealii/issues/19063 #18145: Should we ban "Merge branch `master` of `https://github.com/dealii/dealii` into `feature-branch`"? (closed) https://github.com/dealii/dealii/issues/18145 #12640: DataOut_DofData::add_data_vector() asserts after DoF renumbering on multiple processes (closed) https://github.com/dealii/dealii/issues/12640 A list of all major changes since the last release can be found at https://www.dealii.org/developer/doxygen/deal.II/recent_changes.html. Thanks for being part of the community! Let us know about questions, problems, bugs or just share your experience by writing to [email protected], or by opening issues or pull requests at https://www.github.com/dealii/dealii. 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