1 also called zymogenic cell. Any one of the columnar epithelial cells or the cuboidal epithelial cells that line the gastric glands and secrete pepsinogen and intrinsic factor, which are needed for the digestion and absorption of vitamin B 12 and the normal development of red blood cells.
The red and blue vectors are the elements of the basis; the green vector can be given with the basis vectors. In linear algebra, a basis is a set of vectors in a given vector space with certain properties: 1  One can get any vector in the vector space by multiplying each of the basis vectors by different numbers, and then adding them up.  If any vector is removed from the basis, the property above is no longer satisfied.
1 A linear map is a homomorphism that preserves the vector space structure, namely the abelian group structure and scalar multiplication. 2  The scalar type must further be specified to specify the homomorphism, e.g. every R-linear map is a Z-linear map, but not vice versa.ince inverses exist in G and H, one can show that the identity of G maps to the identity of H and that inverses are preserved. The algebraic structure to be preserved may include more than one operation, and a homomorphism is required to preserve each operation.