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College Mathematics Journal	1
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Trotter, William T.

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On-Line Partitioning of Partially Ordered Sets.

Peer reviewed

Trotter, William T. – College Mathematics Journal, 1989

Presents an example from the combinatorial theory of partially ordered sets. Discusses algorithms of on-line antichain partitioning problems, a topic in discrete optimization. (YP)

Descriptors: Algorithms, College Mathematics, Mathematical Enrichment, Mathematical Formulas

Applications: Cloud Height at Night.

Peer reviewed

Mathematics Teacher, 1980

The method used at airports in determining the cloud height at night is presented. Several problems, the equation used, and a simple design of an alidade (an instrument that shows cloud heights directly) are also included. (MP)

Descriptors: Algorithms, Mathematical Applications, Mathematics Education, Mathematics Instruction