Abstract.
Let \( (\mathcal{P},\frak{G}_{1}, \frak{G}_{2}) \) be a 2-net where the set \frak{C} of chains is not empty and let K s be a splitting of \(\mathcal{P}\) by a chain \( K\in\frak{C} \). Then there correspond two halforders \(\xi_{l},\xi_{r}\) of the set K which are related, and vice versa, if there are given two related halforders of K then there exists a splitting of \( \mathcal{P} \) by K. The questions "when is \( \xi_{l}=\xi_{r} \)?", "when is \( \xi_{l} \)convex or an order?" will be studied. Moreover it will be shown that \( (\mathcal{P},\frak{G}_{1}, \frak{G}_{2},\{K_{s}\}) \) can be embedded in a halfordered chain structure in the sense of [1].
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Received 23 March 2001.
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Alinovi, B., Karzel, H. Halfordered sets, halfordered chain structures and splittings by chains. J.Geom. 75, 15–26 (2002). https://doi.org/10.1007/s00022-002-1573-y
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DOI: https://doi.org/10.1007/s00022-002-1573-y