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src/semantics.tex

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+\begin{figure*}[ht]
+    \centering
+   \begin{tabular}{ccc}
+  
+  \begin{minipage}[b]{4.5cm}
+    \centering
+    \begin{equation*}
+      \frac{E^n \vdash e_1 \Downarrow v_1\ E^{n-v_1} \vdash  e_2 \Downarrow v_2}{E^n \vdash\ delay\ e_1\ e_2 \Downarrow  v_2}
+    \end{equation*}\textrm{E-DELAY}
+  \end{minipage} &
+  \begin{minipage}[b]{4.5cm}
+    \centering
+    \begin{equation*}
+      \frac{}{E^n \vdash\ \lambda x.e \Downarrow  cls(\lambda x.e , E^n) }
+    \end{equation*}\textrm{E-LAM}
+    \end{minipage}&
+  
+  
+      \begin{minipage}[b]{6cm}
+      \centering
+      \begin{equation*}
+          \frac{ E^{n-1} \vdash e \Downarrow v_1\ E^n, x \mapsto v_1 \vdash e \Downarrow v_2 }{E^n \vdash\ feed\ x\ e \Downarrow  v_2}
+      \end{equation*}\textrm{E-FEED}
+      \end{minipage}
+  \\
+  \multicolumn{3}{c}{
+  \begin{minipage}[b]{8cm}
+    \centering
+    \begin{equation*}
+      \frac{E^n \vdash e_1 \Downarrow cls(\lambda x_c.e_c, E^n_c) E^n \vdash e_2 \Downarrow v_2\ E^n_c, x_c \mapsto v_2 \vdash e_c \Downarrow v }{E^n \vdash\ e_1\ e_2 \Downarrow v }
+    \end{equation*}\textrm{E-APP}
+    \end{minipage}
+  }
+  
+  \end{tabular}
+    \caption{\label{fig:semantics}{\it Big-step Semantics of $\lambda_{mmm}$.}}
+  \end{figure*}