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Genaille Rods

Numbered rods which can be used to perform multiplication.

See also Napier's Bones


References

Gardner, M. ``Napier's Bones.'' Ch. 7 in Knotted Doughnuts and Other Mathematical Entertainments. New York: W. H. Freeman, 1986.




© 1996-9 Eric W. Weisstein
1999-05-25