4 research outputs found
A surface containing a line and a circle through each point is a quadric
Full text linkWe prove that a surface in real 3-space containing a line and a circle
through each point is a quadric. We also give some particular results on the
classification of surfaces containing several circles through each point.Comment: Improved exposition, 4 figures adde
Seasonal Distribution of Threaded Sculpin Gymnocanthus pistilliger (Cottidae) in Russian Waters of the Sea of Japan
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