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====Variant 5====
 
====Variant 5====
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<pre>
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<br>
Value Rule 1
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If f, g : U -> B,
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{| 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%"
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|
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{| align="center" cellpadding="0" cellspacing="0" width="100%"
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|- style="height:48px; text-align:right"
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| width="98%" | <math>\text{Value Rule 1}\!</math>
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| width="2%"  | &nbsp;
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|}
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|-
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|
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{| align="center" cellpadding="0" cellspacing="0" width="100%"
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|- style="height:48px"
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| width="2%"  style="border-top:1px solid black" | &nbsp;
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| width="14%" style="border-top:1px solid black" | <math>\text{If}\!</math>
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| width="84%" style="border-top:1px solid black" | <math>f, g ~:~ X \to \underline\mathbb{B}</math>
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|- style="height:48px"
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| &nbsp;
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| <math>\text{then}\!</math>
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| <math>\text{the following are identical propositions on}~ X:</math>
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|}
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|-
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|
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{| align="center" cellpadding="0" cellspacing="0" width="100%"
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|- style="height:56px"
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| width="2%"  style="border-top:1px solid black" | &nbsp;
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| width="14%" style="border-top:1px solid black" | <math>\text{V1a.}\!</math>
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| width="84%" style="border-top:1px solid black" | <math>\downharpoonleft f ~=~ g \downharpoonright</math>
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|- style="height:56px"
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| &nbsp;
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| <math>\text{V1b.}\!</math>
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| <math>\downharpoonleft f ~\Leftrightarrow~ g \downharpoonright</math>
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|- style="height:56px"
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| &nbsp;
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| <math>\text{V1c.}\!</math>
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| <math>\underline{((}~ f ~,~ g ~\underline{))}^\$</math>
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|}
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|}
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then the following are identical propositions on U:
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<br>
 
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V1a. [ f = g ]
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V1b. [ f <=> g ]
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V1c. (( f , g ))$
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</pre>
      
===Evaluation Rule 1===
 
===Evaluation Rule 1===
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