Changes

Line 789: Line 789:  
<br>
 
<br>
   −
<pre>
+
{| align="center" cellpadding="0" cellspacing="0" style="border-left:1px solid black; border-top:1px solid black; border-right:1px solid black; border-bottom:1px solid black" width="90%"
Rule 5
+
|
If X, Y c U,
+
{| align="center" cellpadding="0" cellspacing="0" width="100%"
 
+
|- style="height:40px; text-align:center"
then the following are equivalent:
+
| width="80%" | &nbsp;
 
+
| width="20%" style="border-left:1px solid black" | <math>\operatorname{Rule~5}</math>
R5a. X = Y. :D2a
+
|}
::
+
|-
R5b. u C X <=> u C Y, for all u C U. :D2b
+
|
:D7a
+
{| align="center" cellpadding="0" cellspacing="0" width="100%"
::
+
|- style="height:40px"
R5c. [u C X] = [u C Y], for all u C U. :D7b
+
| width="2%"  style="border-top:1px solid black" | &nbsp;
:???
+
| width="18%" style="border-top:1px solid black" | <math>\text{If}\!</math>
::
+
| width="60%" style="border-top:1px solid black" | <math>P, Q ~\subseteq~ X</math>
R5d. {<u, v> C UxB : v = [u C X]}
+
| width="20%" style="border-top:1px solid black; border-left:1px solid black" | &nbsp;
=
+
|- style="height:40px"
{<u, v> C UxB : v = [u C Y]}. :???
+
| &nbsp;
:D5b
+
| <math>\text{then}\!</math>
::
+
| <math>\text{the following are equivalent:}\!</math>
R5e. {X} = {Y}. :D5a
+
| style="border-left:1px solid black" | &nbsp;
</pre>
+
|}
 +
|-
 +
|
 +
{| align="center" cellpadding="0" cellspacing="0" width="100%"
 +
|- style="height:40px"
 +
| width="2%"  style="border-top:1px solid black" | &nbsp;
 +
| width="18%" style="border-top:1px solid black" | <math>\operatorname{R5a.}</math>
 +
| width="60%" style="border-top:1px solid black" | <math>P ~=~ Q</math>
 +
| width="20%" style="border-top:1px solid black; border-left:1px solid black; text-align:center" | <math>\operatorname{R5a~:~D2a}</math>
 +
|- style="height:20px"
 +
| &nbsp;
 +
| &nbsp;
 +
| &nbsp;
 +
| style="border-left:1px solid black; text-align:center" | <math>::\!</math>
 +
|- style="height:60px"
 +
| &nbsp;
 +
| <math>\operatorname{R5b.}</math>
 +
| <math>\overset{X}{\underset{x}{\forall}}~ (x \in P ~\Leftrightarrow~ x \in Q)</math>
 +
| style="border-left:1px solid black; text-align:center" |
 +
<p><math>\operatorname{R5b~:~D2b}</math></p>
 +
<p><math>\operatorname{R5b~:~D7a}</math></p>
 +
|- style="height:20px"
 +
| &nbsp;
 +
| &nbsp;
 +
| &nbsp;
 +
| style="border-left:1px solid black; text-align:center" | <math>::\!</math>
 +
|- style="height:60px"
 +
| &nbsp;
 +
| <math>\operatorname{R5c.}</math>
 +
| <math>\overset{X}{\underset{x}{\forall}}~ (\downharpoonleft x \in P \downharpoonright ~=~ \downharpoonleft x \in Q \downharpoonright)</math>
 +
| style="border-left:1px solid black; text-align:center" |
 +
<p><math>\operatorname{R5c~:~D7b}</math></p>
 +
<p><math>\operatorname{R5c~:~\_\_?\_\_}</math></p>
 +
|- style="height:20px"
 +
| &nbsp;
 +
| &nbsp;
 +
| &nbsp;
 +
| style="border-left:1px solid black; text-align:center" | <math>::\!</math>
 +
|- style="height:80px"
 +
| &nbsp;
 +
| <math>\operatorname{R5d.}</math>
 +
|
 +
<math>\begin{matrix}
 +
\{ (x, y) \in X \times \underline\mathbb{B} ~:~ y ~=~ \downharpoonleft x \in P \downharpoonright
 +
\\
 +
=
 +
\\
 +
\{ (x, y) \in X \times \underline\mathbb{B} ~:~ y ~=~ \downharpoonleft x \in Q \downharpoonright
 +
\end{matrix}</math>
 +
| style="border-left:1px solid black; text-align:center" |
 +
<p><math>\operatorname{R5d~:~\_\_?\_\_}</math></p>
 +
<p><math>\operatorname{R5d~:~D5b}</math></p>
 +
|- style="height:20px"
 +
| &nbsp;
 +
| &nbsp;
 +
| &nbsp;
 +
| style="border-left:1px solid black; text-align:center" | <math>::\!</math>
 +
|- style="height:40px"
 +
| &nbsp;
 +
| <math>\operatorname{R5e.}</math>
 +
| <math>\upharpoonleft P \upharpoonright ~=~ \upharpoonleft Q \upharpoonright</math>
 +
| style="border-left:1px solid black; text-align:center" | <math>\operatorname{R5e~:~D5a}</math>
 +
|}
 +
|}
    
<br>
 
<br>
12,080

edits