More on universal mapping properties
We will look at more illustrations of the use of figures to find objects having various universal mapping properties. There are many such properties and it will be helpful to put some of them in a list.
The list is divided into two columns because universal mapping properties come in pairs; for each property in the right-hand column there is a corresponding one in the left, and vice versa. So far, we have studied only the first two properties on the right. The definition for a ‘left column property’ is similar to that of the corresponding ‘right column property,’ with the only difference that all ...