update docstring

lucamarx · Jun 23, 2022 · 6d44adf · 6d44adf
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diff --git a/python/chapter3.ipynb b/python/chapter3.ipynb
@@ -573,9 +573,7 @@
     "\n",
     "def expValMpo(O, Ac, Fl, Fr):\n",
     "    \"\"\"\n",
-    "    Gives the MPO tensor corresponding to the partition function of the 2d \n",
-    "    classical Ising model at a given temperature and coupling, obtained by\n",
-    "    distributing the Boltzmann weights evenly over all vertices.\n",
+    "    Gives the expectation value of a local operator O.\n",
     "    \n",
     "        Parameters\n",
     "        ----------\n",

diff --git a/python/chapter3Solution.ipynb b/python/chapter3Solution.ipynb
@@ -523,7 +523,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### 3.2 The two-dimensional classical Ising model\n",
+    "### 3.3 The two-dimensional classical Ising model\n",
     "\n",
     "Next we apply the VUMPS algorithm for MPOs to the two-dimensional classical Ising model. To this end, consider classical spins $s_i = \\pm 1$ placed on the sites of an infinite square lattice which interact according to the nearest-neighbor Hamiltonian\n",
     "\n",
@@ -641,9 +641,7 @@
     "\n",
     "def expValMpo(O, Ac, Fl, Fr):\n",
     "    \"\"\"\n",
-    "    Gives the MPO tensor corresponding to the partition function of the 2d \n",
-    "    classical Ising model at a given temperature and coupling, obtained by\n",
-    "    distributing the Boltzmann weights evenly over all vertices.\n",
+    "    Gives the expectation value of a local operator O.\n",
     "    \n",
     "        Parameters\n",
     "        ----------\n",