Real sequence

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A real sequence is the name given to a sequence, [ilmath](a_n)_{n\in\mathbb{N} }\subset\mathbb{R} [/ilmath] - literally a sequence of real numbers - but where things like convergence are considered with the usual metric of the reals, that is:

  • [ilmath]d(x,y):\eq\vert x-y\vert[/ilmath] - the absolute value of the difference between [ilmath]x[/ilmath] and [ilmath]y[/ilmath].

We can subtract [ilmath]y[/ilmath] from [ilmath]x[/ilmath] as the reals are a field.


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It should be obvious a real sequence is a sequence of reals!