a scalar for which there exists a nonzero vector such that the scalar times the vector equals the value of the vector under a given linear transformation on a vector space.
a root of the characteristic equation of a given matrix.
What is the “seven” in “7 UP?” What is the “root” in “root beer?”
Root beer and 7 Up are carbonated, sweetened beverages with peculiar names. What root is found in root beer? Burdock? Daikon? And what does the “7” represent? Good luck? The primary flavor of root beer was originally made using the root (or bark) of the sassafras plant. Sassafras is native to the Americas and was supposedly discovered by the Spanish in 1528. It is believed …
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Origin of characteristic root
First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019