From 1e1914ac36f873bb3f74d9780755d82b1fd6f0b9 Mon Sep 17 00:00:00 2001
From: Chazeon <chenxing.luo@gmail.com>
Date: Sun, 11 Apr 2021 22:34:46 -0400
Subject: [PATCH] Updating tensor-symmetry page for docs, remove trigonal8

---
 cij/data/constraints/trigonal8    |  7 ----
 docs/tutorial.rst                 |  3 +-
 docs/tutorial/tensor-symmetry.rst | 54 +++++++++++++++++++++++++++++++
 3 files changed, 56 insertions(+), 8 deletions(-)
 delete mode 100644 cij/data/constraints/trigonal8
 create mode 100644 docs/tutorial/tensor-symmetry.rst

diff --git a/cij/data/constraints/trigonal8 b/cij/data/constraints/trigonal8
deleted file mode 100644
index 9ecf054..0000000
--- a/cij/data/constraints/trigonal8
+++ /dev/null
@@ -1,7 +0,0 @@
-c11 = c22
-c13 = c23
-c14 = - c24 = c56 / 2
-c15 = - c25 = - c46 / 2
-c44 = c55
-c66 = (c11 - c12) / 2
-c16 = c26 = c34 = c35 = c36 = c45 = 0
diff --git a/docs/tutorial.rst b/docs/tutorial.rst
index 56d3db5..4a31f2d 100644
--- a/docs/tutorial.rst
+++ b/docs/tutorial.rst
@@ -9,4 +9,5 @@ Tutorials
    tutorial/handling-units.ipynb
    tutorial/voigt.ipynb
    tutorial/strain-diagonalization.ipynb
-   tutorial/shear-elastic-modulus-dependency.ipynb
\ No newline at end of file
+   tutorial/shear-elastic-modulus-dependency.ipynb
+   tutorial/tensor-symmetry
\ No newline at end of file
diff --git a/docs/tutorial/tensor-symmetry.rst b/docs/tutorial/tensor-symmetry.rst
new file mode 100644
index 0000000..3dd0d72
--- /dev/null
+++ b/docs/tutorial/tensor-symmetry.rst
@@ -0,0 +1,54 @@
+Symmetries table for elastic tensor
+===================================
+
+The table follows Bragger's (1965) paper.
+
+    Brugger, K. (1965). Pure Modes for Elastic Waves in Crystals. Journal of Applied Physics, 36(3), 759–768. https://doi.org/10.1063/1.1714215
+
+
+Tensor symmetry relationship constraints
+----------------------------------------
+
+Cubic
+"""""
+.. include:: ../../cij/data/constraints/cubic
+   :literal:
+
+
+Orthorhombic
+""""""""""""
+.. include:: ../../cij/data/constraints/orthorhombic
+   :literal:
+
+Tetrahedral (6)
+"""""""""""""""
+.. include:: ../../cij/data/constraints/tetragonal6
+   :literal:
+
+Tetrahedral (7)
+"""""""""""""""
+.. include:: ../../cij/data/constraints/tetragonal7
+   :literal:
+
+Hexagonal
+"""""""""
+.. include:: ../../cij/data/constraints/hexagonal
+   :literal:
+
+Trigonal (6)
+""""""""""""
+.. include:: ../../cij/data/constraints/trigonal6
+   :literal:
+
+Trigonal (7)
+""""""""""""
+.. include:: ../../cij/data/constraints/trigonal7
+   :literal:
+
+Monoclinic
+""""""""""
+.. include:: ../../cij/data/constraints/monoclinic
+   :literal:
+
+
+