diff --git a/doc/HandWrittenNotes/2025/FYSSTKweek41.pdf b/doc/HandWrittenNotes/2025/FYSSTKweek41.pdf
new file mode 100644
index 000000000..9199be871
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diff --git a/doc/pub/week41/ipynb/week41.ipynb b/doc/pub/week41/ipynb/week41.ipynb
index c9b1adcdd..4911c6049 100644
--- a/doc/pub/week41/ipynb/week41.ipynb
+++ b/doc/pub/week41/ipynb/week41.ipynb
@@ -1189,7 +1189,10 @@
    "id": "72fa0f44",
    "metadata": {
     "collapsed": false,
-    "editable": true
+    "editable": true,
+    "jupyter": {
+     "outputs_hidden": false
+    }
    },
    "outputs": [],
    "source": [
@@ -1550,7 +1553,10 @@
    "id": "620b6c3e",
    "metadata": {
     "collapsed": false,
-    "editable": true
+    "editable": true,
+    "jupyter": {
+     "outputs_hidden": false
+    }
    },
    "outputs": [],
    "source": [
@@ -2443,13 +2449,73 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 1,
    "id": "3616dd69",
    "metadata": {
     "collapsed": false,
-    "editable": true
+    "editable": true,
+    "jupyter": {
+     "outputs_hidden": false
+    }
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[36.89563074]\n",
+      "[23.62323175]\n",
+      "[15.1251681]\n",
+      "[9.68402334]\n",
+      "[6.20020163]\n",
+      "[3.96963458]\n",
+      "[2.54150298]\n",
+      "[1.62714703]\n",
+      "[1.0417409]\n",
+      "[0.66694492]\n",
+      "[0.42699034]\n",
+      "[0.27336592]\n",
+      "[0.17501258]\n",
+      "[0.11204514]\n",
+      "[0.07173249]\n",
+      "[0.04592382]\n",
+      "[0.02940083]\n",
+      "[0.01882264]\n",
+      "[0.01205039]\n",
+      "[0.00771475]\n",
+      "[0.00493903]\n",
+      "[0.003162]\n",
+      "[0.00202433]\n",
+      "[0.00129599]\n",
+      "[0.0008297]\n",
+      "[0.00053118]\n",
+      "[0.00034006]\n",
+      "[0.00021771]\n",
+      "[0.00013938]\n",
+      "[8.92313548e-05]\n",
+      "[5.71263851e-05]\n",
+      "[3.6572612e-05]\n",
+      "[2.34139775e-05]\n",
+      "[1.49897504e-05]\n",
+      "[9.5965161e-06]\n",
+      "[6.14373934e-06]\n",
+      "[3.93325371e-06]\n",
+      "[2.51808934e-06]\n",
+      "[1.61209378e-06]\n",
+      "[1.03207075e-06]\n",
+      "[6.60737006e-07]\n",
+      "[4.23007231e-07]\n",
+      "[2.70811405e-07]\n",
+      "[1.73374853e-07]\n",
+      "[1.10995472e-07]\n",
+      "[7.10598715e-08]\n",
+      "[4.54928947e-08]\n",
+      "[2.91247848e-08]\n",
+      "[1.86458368e-08]\n",
+      "[1.19371605e-08]\n"
+     ]
+    }
+   ],
    "source": [
     "import numpy as np\n",
     "# We use the Sigmoid function as activation function\n",
@@ -3814,7 +3880,25 @@
    ]
   }
  ],
- "metadata": {},
+ "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": "3.9.15"
+  }
+ },
  "nbformat": 4,
  "nbformat_minor": 5
 }