From 35c21395e3b8dad6b4d476fb290326ad2d26891b Mon Sep 17 00:00:00 2001 From: Tao Jin Date: Tue, 22 Aug 2023 22:21:34 -0400 Subject: [PATCH] add an entry in changelog --- doc/news/changes/minor/20230822TaoJin | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 doc/news/changes/minor/20230822TaoJin diff --git a/doc/news/changes/minor/20230822TaoJin b/doc/news/changes/minor/20230822TaoJin new file mode 100644 index 0000000000..3bd6f7aa50 --- /dev/null +++ b/doc/news/changes/minor/20230822TaoJin @@ -0,0 +1,9 @@ +New: Add two tensor functions for the split of a 2nd-order symmetric tensor +into a positive part and a negative part based on the signs of the eigenvalues +obtained from the spectrum decomposition. The function positive_negative_split() +performs the positive-negative split of the 2nd-order symmetric tensor given as +the input. The function positive_negative_projectors() not only performs the split, +but also provides the derivatives (two fourth-order tensors) of the positive/negative +part of the tensor with respect to the input tensor. +
+(Tao Jin, 2023/08/22) -- 2.39.5