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User:Jon Awbrey/SCRATCHPAD (view source)
Revision as of 04:01, 31 January 2009
, 04:01, 31 January 2009→Definition 4
===Definition 4===
===Definition 4===
<pre>
<br>
If X c U,
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|- style="height:40px; text-align:center"
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| width="20%" | <math>\text{Definition 4}\!</math>
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|- style="height:40px"
| width="2%" style="border-top:1px solid black" |
| width="18%" style="border-top:1px solid black" | <math>\text{If}\!</math>
| width="80%" style="border-top:1px solid black" | <math>Q ~\subseteq~ X</math>
|- style="height:40px"
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| <math>\text{then}\!</math>
| <math>\text{the following are identical subsets of}~ X \times \underline\mathbb{B}:</math>
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|- style="height:40px"
| width="2%" style="border-top:1px solid black" |
| width="18%" style="border-top:1px solid black" | <math>\operatorname{D4a.}</math>
| width="80%" style="border-top:1px solid black" | <math>\upharpoonleft Q \upharpoonright</math>
|- style="height:40px"
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| <math>\operatorname{D3b.}</math>
| <math>\{ (x, y) \in X \times \underline\mathbb{B} ~:~ y ~=~ \downharpoonleft x \in Q \downharpoonright</math>
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<br>
===Definition 5===
===Definition 5===