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fix typo 'he' -> 'the'

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Rafal Prominski 2023-03-19 11:04:49 +01:00
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_chapters/01_set.md
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@ -506,7 +506,7 @@ This is a good starting point, but the person may still be staring at the object
![A set of two balls](number_two_isomorphism.svg)
At this point there is no more examples that we can add. In fact, because we consider all other sets as well, we might say that this is not just a bunch of examples, but a proper *definition* of the number $2$. And we can extend that to include all other numbers. In fact, he first definition of a natural number (presented by Gottlob Frege in 1884) is roughly based on this very idea.
At this point there is no more examples that we can add. In fact, because we consider all other sets as well, we might say that this is not just a bunch of examples, but a proper *definition* of the number $2$. And we can extend that to include all other numbers. In fact, the first definition of a natural number (presented by Gottlob Frege in 1884) is roughly based on this very idea.
Before we close this chapter, there is one meta-note that we should definitely make: according to the definition of a number that we presented, a number is not an *object*, but a whole *system of interconnected objects*, containing in this case an infinite number of objects. This may seem weird to you, but it's actually pretty characteristic of the categorical way of modeling things.