diff --git a/ChronoHolographicCipher.ipynb b/ChronoHolographicCipher.ipynb
index c9027ed..d510095 100644
--- a/ChronoHolographicCipher.ipynb
+++ b/ChronoHolographicCipher.ipynb
@@ -356,6 +356,45 @@
       ],
       "execution_count": null,
       "outputs": []
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## UNIT TESTS"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "import unittest\n",
+        "\n",
+        "class TestChronoHolographicCipher(unittest.TestCase):\n",
+        "    def test_calculate_temporal_echo_simple(self):\n",
+        "        cipher = ChronoHolographicCipher(resonance_factor=2, dimensions=2)\n",
+        "        # dims = 2, R = 2\n",
+        "        # n=1: 2^1 * (10 / 9) = 20/9\n",
+        "        # n=2: 2^2 * (10 / 8) = 40/8 = 5\n",
+        "        # expected = 10 + 20/9 + 5 = 15 + 2.222... = 17.22222222222222\n",
+        "        result = cipher.calculate_temporal_echo(base_state_val=10, current_time=10)\n",
+        "        self.assertAlmostEqual(result, 15 + 20/9, places=7)\n",
+        "\n",
+        "    def test_calculate_temporal_echo_zero_dims(self):\n",
+        "        cipher = ChronoHolographicCipher(resonance_factor=2, dimensions=0)\n",
+        "        result = cipher.calculate_temporal_echo(base_state_val=10, current_time=10)\n",
+        "        self.assertEqual(result, 10)\n",
+        "\n",
+        "    def test_calculate_temporal_echo_zero_base(self):\n",
+        "        cipher = ChronoHolographicCipher(resonance_factor=2, dimensions=2)\n",
+        "        result = cipher.calculate_temporal_echo(base_state_val=0, current_time=10)\n",
+        "        self.assertEqual(result, 0)\n",
+        "\n",
+        "if __name__ == '__main__':\n",
+        "    unittest.main(argv=[''], exit=False)\n"
+      ]
     }
   ]
 }
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