diff --git a/Appendix_Symbols_and_Notations.ipynb b/Appendix_B_Symbols_and_Notations/Appendix_Symbols_and_Notations.ipynb
similarity index 97%
rename from Appendix_Symbols_and_Notations.ipynb
rename to Appendix_B_Symbols_and_Notations/Appendix_Symbols_and_Notations.ipynb
index 0bf74a5..48f150b 100644
--- a/Appendix_Symbols_and_Notations.ipynb
+++ b/Appendix_B_Symbols_and_Notations/Appendix_Symbols_and_Notations.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:fc7a76981c0f56cd0ecc2e002ce26fdf15803c9b00c697fc5550b071291626ff"
+  "signature": "sha256:34de03d319fbef2790012c38db97348abe5e8f429c2d05cedae3dcdec75dbd5d"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -16,6 +16,8 @@
       "%matplotlib inline\n",
       "from __future__ import division, print_function\n",
       "import matplotlib.pyplot as plt\n",
+      "import sys\n",
+      "sys.path.insert(0,'../') # allow us to format the book\n",
       "import book_format\n",
       "book_format.load_style()"
      ],
@@ -240,13 +242,13 @@
        ],
        "metadata": {},
        "output_type": "pyout",
-       "prompt_number": 3,
+       "prompt_number": 1,
        "text": [
-        "<IPython.core.display.HTML at 0x7fe174bfb350>"
+        "<IPython.core.display.HTML at 0x7fa10405ba20>"
        ]
       }
      ],
-     "prompt_number": 3
+     "prompt_number": 1
     },
     {
      "cell_type": "heading",
@@ -398,9 +400,7 @@
     {
      "cell_type": "markdown",
      "metadata": {},
-     "source": [
-      "$\\mathbf{\\phi}\\phi$"
-     ]
+     "source": []
     }
    ],
    "metadata": {}