MyWikiBiz, Author Your Legacy — Tuesday November 04, 2025
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		632 bytes added
	
		,  19:48, 16 June 2009
	
 
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|   | \\[4pt]  |   | \\[4pt]  | 
|   | & + & (p) & \cdot & (q) & \cdot & ~\operatorname{d}p~~\operatorname{d}q~\end{array}</math>  |   | & + & (p) & \cdot & (q) & \cdot & ~\operatorname{d}p~~\operatorname{d}q~\end{array}</math>  | 
|   | + | |}  | 
|   | + |  | 
|   | + | {| align="center" cellspacing="10" style="text-align:center"  | 
|   | + | | [[Image:Field Picture PQ Difference Conjunction.jpg|500px]]  | 
|   | + | |-  | 
|   | + | | <math>\text{Figure 22-c.  Difference}~ \operatorname{D}(pq) : \operatorname{E}X \to \mathbb{B}</math>  | 
|   | + | |-  | 
|   | + | |  | 
|   | + | <math>\begin{array}{rcccccc}  | 
|   | + | \operatorname{D}(pq)  | 
|   | + | & = &  p  & \cdot &  q  & \cdot & ((\operatorname{d}p)(\operatorname{d}q))  | 
|   | + | \\[4pt]  | 
|   | + | & + &  p  & \cdot & (q) & \cdot & ~(\operatorname{d}p)~\operatorname{d}q~~  | 
|   | + | \\[4pt]  | 
|   | + | & + & (p) & \cdot &  q  & \cdot & ~~\operatorname{d}p~(\operatorname{d}q)~  | 
|   | + | \\[4pt]  | 
|   | + | & + & (p) & \cdot & (q) & \cdot & ~~\operatorname{d}p~~\operatorname{d}q~~  | 
|   | + | \end{array}</math>  | 
|   | |}  |   | |}  |