add a notebook

.gitignore

@@ -0,0 +1 @@
+.ipynb_checkpoints

explore.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "f3371400-757c-4cd5-baf0-5c554d349394",
+   "metadata": {},
+   "source": [
+    "An empty notebook"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.10.13"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}