Human reproductive ecology to aid infant survival and growth. Lactational strategies vary cross-culturally, but can typically be defined by sibling sets and sex ratios, frequency of nursing, entire lactational duration, and milk composition. Milk is composed of my bioconstituents, but only a few will be outlined here. In the first days of puerperium, the first milk is thick and yellowish, also called colostrum. For weeks after that, mature milk is expressed and it has been shown that fetal-mammary gland signaling occurs even before birth in determining milk type and concentrations based on the fetus sex. Colostrum plays an important role in establishing the
Invariant of a binary form invariant polynomials on "V". Invariants of a binary form of degree "n" correspond to taking "V" to be the ("n" + 1)-dimensional irreducible representation, and covariants correspond to taking "V" to be the sum of the irreducible representations of dimensions 2 and "n" + 1. The invariants of a binary form form a graded algebra, and proved that this algebra is finitely generated if the base field is the complex numbers. Forms of degrees 2, 3, 4, 5, 6, 7, 8, 9, 10 are sometimes called quadrics, cubic, quartics, quintics, sextics, septics or septimics, octics or octavics, nonics, and decics