βOutsideβ as a primitive notion in const
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Dirk Dalen
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Article
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1996
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Springer
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English
β 211 KB
In intuitionistic (or constructive) geometry there are positive counterparts, 'apart' and 'outside', of the relations '=' and 'incident'. In this paper it is shown that the relation 'outside' suffices to define 'incident', 'apart' and 'equality'. The equivalence of the new system with Heyting's syst