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A Calculus of Number Based on Spatial Forms - University of ...

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44<br />

J has a stability unparalleled in the calculus: it uses all three boundaries exactly<br />

<strong>on</strong>ce. All other legal c<strong>on</strong>gurati<strong>on</strong>s <str<strong>on</strong>g>of</str<strong>on</strong>g> three dierent boundaries reduce to void because<br />

the abstract and instance boundaries cancel out. (The sixth case, (); is<br />

undened.)<br />

[()];([]);;:<br />

6.2.1 Phase Independence<br />

The c<strong>on</strong>gurati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> three boundaries also serves as phase operator, given as []:<br />

This operator possesses a curious property <str<strong>on</strong>g>of</str<strong>on</strong>g> independence from its c<strong>on</strong>tents.<br />

Theorem 1 (Phase Independence) In a nesting <str<strong>on</strong>g>of</str<strong>on</strong>g> abstract, inverse, and instance<br />

boundaries, the c<strong>on</strong>tents <str<strong>on</strong>g>of</str<strong>on</strong>g> the instance can be moved to the c<strong>on</strong>text <str<strong>on</strong>g>of</str<strong>on</strong>g> the c<strong>on</strong>gurati<strong>on</strong>.<br />

Pro<str<strong>on</strong>g>of</str<strong>on</strong>g>. For all A 2 B,<br />

[]<br />

Given<br />

[ ( [ ])] Involuti<strong>on</strong><br />

[ (A [ ])] Domini<strong>on</strong><br />

[ (A [() ])] Inversi<strong>on</strong><br />

[ (A [()])(A [])] Distributi<strong>on</strong><br />

[ (A )(A [])] Involuti<strong>on</strong><br />

[ (A [])] Inversi<strong>on</strong><br />

A [] Involuti<strong>on</strong><br />

Phase independence simplies manipulati<strong>on</strong>s with the inverse. In particular, it<br />

simplies the derivati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> negative cardinality, as<br />

=([])=([A][]):<br />

Phase independence also gives a dierent pro<str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>of</str<strong>on</strong>g> inverse promoti<strong>on</strong>. Rather<br />

than generate, distribute, and cancel (as in the pro<str<strong>on</strong>g>of</str<strong>on</strong>g> in Secti<strong>on</strong> 5.3.1), with phase<br />

independence, the inverse is wrapped into the phase operator and moved.<br />

=([])=(A[])=(A[]):

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