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
Harmonic Maass form combinatorial, arithmetic, or geometric generating functions. Regularized theta lifts of harmonic Maass forms can be used to construct Arakelov Green functions for special divisors on orthogonal Shimura varieties. A complex-valued smooth function on the upper half-plane is called a weak Maass form of integral weight (for the group ) if it satisfies the following three conditions: If is a weak Maass form with eigenvalue 0 under formula_4, that is, if formula_5, then is called a harmonic weak Maass form, or briefly a harmonic Maass form. Every harmonic Maass form of weight has a Fourier expansion of the form where ,