Fix Colab rendering errors (\textup and \bm)

notebooks/03/02-shift-scheduling.ipynb

@@ -45,14 +45,15 @@
    "outputs": [],
    "source": [
     "import sys\n",
-    " \n",
-    "if 'google.colab' in sys.modules:\n",
+    "\n",
+    "if \"google.colab\" in sys.modules:\n",
     "    %pip install pyomo >/dev/null 2>/dev/null\n",
     "    %pip install highspy >/dev/null 2>/dev/null\n",
-    " \n",
-    "solver = 'appsi_highs'\n",
+    "\n",
+    "solver = \"appsi_highs\"\n",
     "\n",
     "import pyomo.environ as pyo\n",
+    "\n",
     "SOLVER = pyo.SolverFactory(solver)\n",
     "\n",
     "assert SOLVER.available(), f\"Solver {solver} is not available.\""
@@ -97,7 +98,7 @@
    "source": [
     "### Model sets\n",
     "\n",
-    "Assuming that we have $N$ available workers, the problem requires the assignment of these available workers to a predetermined set of shifts with specific staffing requirements. Let $\\textup{R}_{d, s}$ describe the minimum number of workers required for the day-shift pair $(d, s)$.\n",
+    "Assuming that we have $N$ available workers, the problem requires the assignment of these available workers to a predetermined set of shifts with specific staffing requirements. Let $\\text{R}_{d, s}$ describe the minimum number of workers required for the day-shift pair $(d, s)$.\n",
     "\n",
     "There are three shifts per day, seven days per week. These observations suggest the need for three ordered sets:\n",
     "\n",

notebooks/03/05-machine-scheduling.ipynb

@@ -42,14 +42,15 @@
    "outputs": [],
    "source": [
     "import sys\n",
-    " \n",
-    "if 'google.colab' in sys.modules:\n",
+    "\n",
+    "if \"google.colab\" in sys.modules:\n",
     "    %pip install pyomo >/dev/null 2>/dev/null\n",
     "    %pip install highspy >/dev/null 2>/dev/null\n",
-    " \n",
-    "solver = 'appsi_highs'\n",
-    " \n",
+    "\n",
+    "solver = \"appsi_highs\"\n",
+    "\n",
     "import pyomo.environ as pyo\n",
+    "\n",
     "SOLVER = pyo.SolverFactory(solver)\n",
     "\n",
     "assert SOLVER.available(), f\"Solver {solver} is not available.\""
@@ -813,8 +814,8 @@
     "\n",
     "$$\n",
     "\\begin{align*}\n",
-    "\\textup{finish}_i & \\leq  \\textup{start}_j + M z_{ij} \\\\\n",
-    "\\textup{finish}_j & \\leq  \\textup{start}_i + M (1 - z_{ij}).\n",
+    "\\text{finish}_i & \\leq  \\text{start}_j + M z_{ij} \\\\\n",
+    "\\text{finish}_j & \\leq  \\text{start}_i + M (1 - z_{ij}).\n",
     "\\end{align*}\n",
     "$$\n",
     "\n",

notebooks/03/07-bim-production-revisited.ipynb

@@ -43,14 +43,15 @@
    "outputs": [],
    "source": [
     "import sys\n",
-    " \n",
-    "if 'google.colab' in sys.modules:\n",
+    "\n",
+    "if \"google.colab\" in sys.modules:\n",
     "    %pip install pyomo >/dev/null 2>/dev/null\n",
     "    %pip install highspy >/dev/null 2>/dev/null\n",
-    " \n",
-    "solver = 'appsi_highs'\n",
-    " \n",
+    "\n",
+    "solver = \"appsi_highs\"\n",
+    "\n",
     "import pyomo.environ as pyo\n",
+    "\n",
     "SOLVER = pyo.SolverFactory(solver)\n",
     "\n",
     "assert SOLVER.available(), f\"Solver {solver} is not available.\""
@@ -520,7 +521,7 @@
     "\\begin{align*}\n",
     "    \\min \\quad & \\sum_{t \\in T} \\Big( \\Big( \\sum_{s \\in S} \\pi_{s} b_{ts} + \\alpha_{s} y_{ts} \\Big) - \\beta p_t \\Big) +&\n",
     "    \\sum_{t \\in T} \\Big (  \\gamma_{\\text{copper}} r_t + \\sum_{p \\in P \\setminus \\{ \\text{copper}\\}} \\gamma_{p} s_{pt}  \\Big) \\\\\n",
-    "    \\textup{s.t.} \\quad \n",
+    "    \\text{s.t.} \\quad \n",
     "    & \\sum_{p \\in P \\setminus \\{ \\text{copper}\\}} x_{pts} \\leq 100 \\cdot b_{ts} & \\forall \\, t \\in T, \\, \\forall \\, s \\in S\\\\\n",
     "    & s_{\\text{copper}, t} \\leq 10 \\cdot r_t & \\forall \\, t \\in T\\\\\n",
     "    & s_{\\text{copper}, t} \\leq 10000 & \\forall \\, t \\in T\\\\\n",

notebooks/10/02-two-stage-production-planning.ipynb

@@ -50,14 +50,15 @@
    "outputs": [],
    "source": [
     "import sys\n",
-    " \n",
-    "if 'google.colab' in sys.modules:\n",
+    "\n",
+    "if \"google.colab\" in sys.modules:\n",
     "    %pip install pyomo >/dev/null 2>/dev/null\n",
     "    %pip install highspy >/dev/null 2>/dev/null\n",
     "\n",
-    "solver = 'appsi_highs'\n",
-    " \n",
+    "solver = \"appsi_highs\"\n",
+    "\n",
     "import pyomo.environ as pyo\n",
+    "\n",
     "SOLVER = pyo.SolverFactory(solver)\n",
     "\n",
     "assert SOLVER.available(), f\"Solver {solver} is not available.\""
@@ -204,9 +205,9 @@
     "\\begin{align*}\n",
     "x = \\begin{pmatrix} x \\end{pmatrix},\n",
     "\\\n",
-    "\\bm{y} = \\begin{pmatrix} y_1 \\\\ y_2 \\\\ y_3 \\end{pmatrix},\n",
+    "y = \\begin{pmatrix} y_1 \\\\ y_2 \\\\ y_3 \\end{pmatrix},\n",
     "\\\n",
-    "\\bm{z} = \\begin{pmatrix} z_A \\\\ z_B \\\\ z_D \\end{pmatrix}\n",
+    "z = \\begin{pmatrix} z_A \\\\ z_B \\\\ z_D \\end{pmatrix}\n",
     "\\end{align*}\n",
     "$$\n",
     "\n",
@@ -221,11 +222,11 @@
     "\n",
     "$$\n",
     "\\begin{align*}\n",
-    "R(\\bm{z})  = \\begin{pmatrix} 0 \\\\ 0 \\\\ 0 \\\\ 0 \\\\ -1 \\end{pmatrix}, \n",
+    "R(z)  = \\begin{pmatrix} 0 \\\\ 0 \\\\ 0 \\\\ 0 \\\\ -1 \\end{pmatrix}, \n",
     "\\\n",
-    "S(\\bm{z}) = \\begin{pmatrix} - (140 - 50z_A - 80z_B) & - (120 - 50z_A - 40z_B) & 1 \\\\ 1 & 0 & 0 \\\\ 1+z_A & 1 + z_A & 0 \\\\ 2(1+z_B) & 1 + z_B & 0 \\\\ 10 & 9 & 0 \\end{pmatrix},\n",
+    "S(z) = \\begin{pmatrix} - (140 - 50z_A - 80z_B) & - (120 - 50z_A - 40z_B) & 1 \\\\ 1 & 0 & 0 \\\\ 1+z_A & 1 + z_A & 0 \\\\ 2(1+z_B) & 1 + z_B & 0 \\\\ 10 & 9 & 0 \\end{pmatrix},\n",
     "\\\n",
-    "t(\\bm{z}) = \\begin{pmatrix} 0 \\\\ -20(1+z_D) \\\\ 80 \\\\ 100 \\\\ 0 \\end{pmatrix} \\\\\n",
+    "t(z) = \\begin{pmatrix} 0 \\\\ -20(1+z_D) \\\\ 80 \\\\ 100 \\\\ 0 \\end{pmatrix} \\\\\n",
     "\\end{align*}\n",
     "$$"
    ]