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| ===Definition 6=== | | ===Definition 6=== |
| | | |
− | <pre> | + | <br> |
− | Definition 6
| |
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− | If Sj is a sentence | + | {| 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%" |
− | about things in the universe U,
| + | | |
− | for all j C J,
| + | {| align="center" cellpadding="0" cellspacing="0" width="100%" |
| + | |- style="height:40px; text-align:center" |
| + | | width="80%" | |
| + | | width="20%" | <math>\text{Definition 6}\!</math> |
| + | |} |
| + | |- |
| + | | |
| + | {| align="center" cellpadding="0" cellspacing="0" width="100%" |
| + | |- style="height:60px" |
| + | | 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" | |
| + | <p><math>s_j ~\text{is a sentence about things in the universe}~ X</math></p> |
| + | <p><math>\text{for each}~ j \in J</math></p> |
| + | |- style="height:40px" |
| + | | |
| + | | <math>\text{then}\!</math> |
| + | | <math>\text{the following are equivalent:}\!</math> |
| + | |} |
| + | |- |
| + | | |
| + | {| align="center" cellpadding="0" cellspacing="0" width="100%" |
| + | |- style="height:40px" |
| + | | width="2%" style="border-top:1px solid black" | |
| + | | width="18%" style="border-top:1px solid black" | <math>\operatorname{D6a.}</math> |
| + | | width="80%" style="border-top:1px solid black" | <math>s_j, ~\operatorname{for~all}~ j \in J</math> |
| + | |- style="height:40px" |
| + | | |
| + | | <math>\operatorname{D6b.}</math> |
| + | | <math>\forall_{j \in J} s_j</math> |
| + | |- style="height:40px" |
| + | | |
| + | | <math>\operatorname{D6c.}</math> |
| + | | <math>\forall_j^J s_j</math> |
| + | |- style="height:40px" |
| + | | |
| + | | <math>\operatorname{D6d.}</math> |
| + | | <math>\operatorname{Conj}_{j \in J} s_j</math> |
| + | |- style="height:40px" |
| + | | |
| + | | <math>\operatorname{D6e.}</math> |
| + | | <math>\operatorname{Conj}_j^J s_j</math> |
| + | |} |
| + | |} |
| | | |
− | then the following are equivalent:
| + | <br> |
− | | |
− | D6a. Sj, for all j C J.
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− | | |
− | D6b. For all j C J, Sj.
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− | | |
− | D6c. Conj(j C J) Sj.
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− | | |
− | D6d. ConjJ,j Sj.
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− | | |
− | D6e. ConjJj Sj.
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− | </pre> | |
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| ===Definition 7=== | | ===Definition 7=== |