Milk product obtained from other mammals for consumption by humans of all ages. In almost all mammals, milk is fed to infants through breastfeeding, either directly or by expressing the milk to be stored and consumed later. The early milk from mammals is called colostrum. Colostrum contains antibodies that provide protection to the newborn baby as well as nutrients and growth factors. The makeup of the colostrum and the period of secretion varies from species to species. For humans, the World Health Organization recommends exclusive breastfeeding for six months and breastfeeding in addition to other food for at least two years.
Sesquilinear form of a complex Hermitian form is a Hermitian matrix. A complex Hermitian form applied to a single vector is always real. One can show that a complex sesquilinear form is Hermitian iff the associated quadratic form is real for all . A complex skew-Hermitian form (also called an antisymmetric sesquilinear form), is a complex sesquilinear form such that Every complex skew-Hermitian form can be written as times a Hermitian form. The matrix representation of a complex skew-Hermitian form is a skew-Hermitian matrix. A complex skew-Hermitian form applied to a single vector is always pure imaginary. This section applies unchanged when