Breastfeeding social reactions in the English-speaking world. It is possible for a mother to continue breastfeeding an older sibling while also breastfeeding a new baby; this is called "tandem nursing". During the late stages of pregnancy, the milk changes to colostrum. While some children continue to breastfeed even with this change, others may wean. Most mothers can produce enough milk for tandem nursing, but the new baby should be nursed first for at least the first few days after delivery to ensure that it receives enough colostrum. Breastfeeding triplets or larger broods is a challenge given babies' varying appetites. Breasts can
Invariant of a binary form the form itself of degree 1 and order 1. The algebra of invariants of the quadratic form "ax" + 2"bxy" + "cy" is a polynomial algebra in 1 variable generated by the discriminant "b" − "ac" of degree 2. The algebra of covariants is a polynomial algebra in 2 variables generated by the discriminant together with the form "f" itself (of degree 1 and order 2). The algebra of invariants of the cubic form "ax" + 3"bx""y" + 3"cxy" + "dy" is a polynomial algebra in 1 variable generated by the discriminant "D" = 3"b""c" + 6"abcd" − 4"b""d" −