rst can't handle arbitrary heading levels

docs/source/examples/Notebook/Typesetting Equations.ipynb

@@ -186,7 +186,8 @@
     "\n",
     "You will notice in other places on the web that `$$` are needed explicitly to begin and end MathJax typesetting.  This is **not** required if you will be using TeX environments, but the Jupyter notebook will accept this syntax on legacy notebooks.  \n",
     "\n",
-    "### Source\n",
+    "## Source\n",
+    "\n",
     "```\n",
     "$$\n",
     "\\begin{array}{c}\n",
@@ -220,7 +221,8 @@
     "$$\n",
     "```\n",
     "\n",
-    "### Display\n",
+    "## Display\n",
+    "\n",
     "$$\n",
     "\\begin{array}{c}\n",
     "y_1 \\\\\\\n",
@@ -264,7 +266,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.4.0"
+   "version": "3.4.3"
   }
  },
  "nbformat": 4,