The component notation ''F'' = ‹''F''<sub>1</sub>, ''F''<sub>2</sub>› = ‹''f'', ''g''› : ''U''<sup> •</sup> → ''X''<sup> •</sup> allows us to give a name and a type to this transformation, and permits us to define it by means of the compact description that follows: | The component notation ''F'' = ‹''F''<sub>1</sub>, ''F''<sub>2</sub>› = ‹''f'', ''g''› : ''U''<sup> •</sup> → ''X''<sup> •</sup> allows us to give a name and a type to this transformation, and permits us to define it by means of the compact description that follows: |