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For questions about mathematical notation, i.e. the symbols used to represent mathematical objects and operations.

3 votes

Suggestions for good notation

The former notation is used in the Agda, the latter is less widely spread but both are used for example in cubicaltt. … Some advantages of this notation are: It is consistent with notation for non-dependent sums and products $A \times B$ and $A \to B$ (the latter is in fact an instance of the third example of good notation