Concepts
Incidence structure
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Concepts
Incidence structure
Abstract mathematical system of two types of objects and a relation between them
rare · Q367329
Related cards · binary relation
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Concepts
Perpendicular
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Subset
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Concepts
Injective function
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Harmonic
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Miscibility
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.png/330px-Parallel_(PSF).png)
Concepts
Parallel (geometry)
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