The first few deficient numbers are
Closely related to deficient numbers are perfect numbers with σ(n) = 2n, and abundant numbers with σ(n) > 2n. The natural numbers were first classified as either deficient, perfect or abundant by Nicomachus in his Introductio Arithmetica (circa 100).
Adipose Fatty Acid Composition and Rate of Incorporation of [alpha]-Linolenic Acid Differ between Normal and Lipoprotein Lipase-Deficient Cats1,2
Dec 01, 2006; Abstract Normal adiposity occurs in humans and mice deficient of adipose lipoprotein lipase (LPL) activity. Subnormal...