Categories and Quantum Informatics: Monoidal categories
نویسنده
چکیده
A monoidal category is a category equipped with extra data, describing how objects and morphisms can be combined ‘in parallel’. This chapter introduces the theory of monoidal categories, and shows how our example categories Hilb, Set and Rel can be given a monoidal structure. We also introduce a visual notation called the graphical calculus, which provides an intuitive and powerful way to work with them.
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