SESSION 27

*Examples of universal constructions*

**1. Universal constructions**

We have seen that there are two kinds of universal constructions: those similar to multiplication and terminal object – the technical term is ‘limits’ – and those similar to sum and initial object: ‘colimits’. Let’s summarize in a table all the universal constructions that we have studied.

Let’s review what a terminal object is. To say that *T* is a terminal object in the category means …. What?

CHAD: That there is only one map.

One map? From where to where?

CHAD: From the ...

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