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| − | <pre> | + | For at least a little while, I will keep explicit the distinction between a ''relative term'' like <math>\mathit{m}\!</math> and a ''relation'' like <math>M \subseteq X \times X,</math> but it is best to think of both of these entities as involving different applications of the same information, and so we could just as easily write this form: |
| − | It has long been customary to omit the implicit plus signs
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| − | in these matrical displays, but I have restored them here
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| − | simply as a way of separating terms in this blancophage
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| − | web format.
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| | | | |
| − | For at least a little while, I will make explicit
| + | {| align="center" cellpadding="6" width="90%" |
| − | the distinction between a "relative term" like m
| + | | align="center" | |
| − | and a "relation" like M c X x X, but it is best
| + | <math> |
| − | to think of both of these entities as involving
| + | m \quad = \quad |
| − | different applications of the same information,
| + | \begin{bmatrix} |
| − | and so we could just as easily write this form:
| + | m_{aa}(a\!:\!a) & m_{ab}(a\!:\!b) & m_{ac}(a\!:\!c) |
| | + | \\ |
| | + | m_{ba}(b\!:\!a) & m_{bb}(b\!:\!b) & m_{bc}(b\!:\!c) |
| | + | \\ |
| | + | m_{ca}(c\!:\!a) & m_{cb}(c\!:\!b) & m_{cc}(c\!:\!c) |
| | + | \end{bmatrix} |
| | + | </math> |
| | + | |} |
| | | | |
| − | m =
| + | By way of making up a concrete example, let us say that <math>M\!</math> is given as follows: |
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| − | m_aa a:a + m_ab a:b + m_ac a:c +
| + | {| align="center" cellpadding="6" width="90%" |
| | + | | align="center" | |
| | + | <math>\begin{array}{l} |
| | + | a ~\text{is a marker for}~ a |
| | + | \\ |
| | + | a ~\text{is a marker for}~ b |
| | + | \\ |
| | + | b ~\text{is a marker for}~ b |
| | + | \\ |
| | + | b ~\text{is a marker for}~ c |
| | + | \\ |
| | + | c ~\text{is a marker for}~ c |
| | + | \\ |
| | + | c ~\text{is a marker for}~ a |
| | + | \end{array}</math> |
| | + | |} |
| | | | |
| − | m_ba b:a + m_bb b:b + m_bc b:c +
| + | In sum, the relative term <math>\mathit{m}\!</math> and the relation <math>M\!</math> are both represented by the following matrix: |
| | | | |
| − | m_ca c:a + m_cb c:b + m_cc c:c
| + | {| align="center" cellpadding="6" width="90%" |
| | + | | align="center" | |
| | + | <math>\begin{bmatrix} |
| | + | 1 \cdot (a\!:\!a) & 1 \cdot (a\!:\!b) & 0 \cdot (a\!:\!c) |
| | + | \\ |
| | + | 0 \cdot (b\!:\!a) & 1 \cdot (b\!:\!b) & 1 \cdot (b\!:\!c) |
| | + | \\ |
| | + | 1 \cdot (c\!:\!a) & 0 \cdot (c\!:\!b) & 1 \cdot (c\!:\!c) |
| | + | \end{bmatrix}</math> |
| | + | |} |
| | | | |
| − | By way of making up a concrete example,
| + | I think this much will serve to fix notation and set up the remainder of the account. |
| − | let us say that M is given as follows:
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| − | | |
| − | a is a marker for a
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| − | | |
| − | a is a marker for b
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| − | | |
| − | b is a marker for b
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| − | | |
| − | b is a marker for c
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| − | | |
| − | c is a marker for c
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| − | | |
| − | c is a marker for a
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| − | | |
| − | In sum, we have this matrix:
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| − | | |
| − | M =
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| − | | |
| − | 1 a:a + 1 a:b + 0 a:c +
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| − | | |
| − | 0 b:a + 1 b:b + 1 b:c +
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| − | | |
| − | 1 c:a + 0 c:b + 1 c:c
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| − | | |
| − | I think that will serve to fix notation | |
| − | and set up the remainder of the account. | |
| − | </pre>
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| | ==Note 15== | | ==Note 15== |