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|   | <br>  |   | <br>  | 
|   |  |   |  | 
| − | {| align="center" border="1" cellpadding="8" cellspacing="0" style="background:#f8f8ff; text-align:center; width:90%"  | + | {| align="center" border="1" cellpadding="8" cellspacing="0" style="text-align:center; width:75%"  | 
| − | |+ <math>\text{Table 1.} ~~ \text{Syntax and Semantics of a Calculus for Propositional Logic}</math>  | + | |+ style="height:30px" | <math>\text{Table 1.} ~~ \text{Syntax and Semantics of a Calculus for Propositional Logic}\!</math>  | 
| − | |- style="background:#f0f0ff"  | + | |- style="height:40px; background:ghostwhite"  | 
|   | | <math>\text{Graph}\!</math>  |   | | <math>\text{Graph}\!</math>  | 
|   | | <math>\text{Expression}~\!</math>  |   | | <math>\text{Expression}~\!</math>  | 
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|   | |-  |   | |-  | 
|   | | <math>A_i\!</math>  |   | | <math>A_i\!</math>  | 
| − | | <math>\{ (a_i), a_i \}\!</math>  | + | | <math>\{ \texttt{(} a_i \texttt{)}, a_i \}\!</math>  | 
|   | | <math>\text{Dimension}~ i\!</math>  |   | | <math>\text{Dimension}~ i\!</math>  | 
|   | | <math>\mathbb{B}\!</math>  |   | | <math>\mathbb{B}\!</math>  | 
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|   | |  |   | |  | 
|   | <math>\begin{matrix}  |   | <math>\begin{matrix}  | 
| − | \underline{X}_i & = & \{ (\underline{x}_i), \underline{x}_i \}  | + | \underline{X}_i & = & \{ \texttt{(} \underline{x}_i \texttt{)}, \underline{x}_i \}  | 
|   | \\  |   | \\  | 
|   | & \cong & \mathbb{B}  |   | & \cong & \mathbb{B}  | 
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|   | |  |   | |  | 
|   | <math>\begin{matrix}  |   | <math>\begin{matrix}  | 
| − | A_i & = & \{ (a_i), a_i \}  | + | A_i & = & \{ \texttt{(} a_i \texttt{)}, a_i \}  | 
|   | \\  |   | \\  | 
|   | & \cong & \mathbb{B}  |   | & \cong & \mathbb{B}  | 
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|   | |-  |   | |-  | 
|   | | <math>\mathrm{d}A_i\!</math>  |   | | <math>\mathrm{d}A_i\!</math>  | 
| − | | <math>\{ (\mathrm{d}a_i), \mathrm{d}a_i \}~\!</math>  | + | | <math>\{ \texttt{(} \mathrm{d}a_i \texttt{)}, \mathrm{d}a_i \}\!</math>  | 
|   | | <math>\text{Differential dimension}~ i\!</math>  |   | | <math>\text{Differential dimension}~ i\!</math>  | 
|   | | <math>\mathbb{D}\!</math>  |   | | <math>\mathbb{D}\!</math>  |