By way of getting our feet back on solid ground, let's crank up our current case of a transformation of discourse, <math>F : U^\circ \to X^\circ,</math> with concrete type <math>[u, v] \to [x, y]</math> or abstract type <math>\mathbb{B}^2 \to \mathbb{B}^2,</math> and let it spin through a sufficient number of turns to see how it goes, as viewed under the scope of what is probably its most straightforward view, as an elsewhen map <math>F : [u, v] \to [u', v'].</math>
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By way of getting our feet back on solid ground, let's crank up
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our current case of a transformation of discourse, F : U% -> X%,
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with concrete type [u, v] -> [x, y] or abstract type B^2 -> B^2,
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and let it spin through a sufficient number of turns to see how
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it goes, as viewed under the scope of what is probably its most
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straightforward view, as an elsewhen map F : [u, v] -> [u', v'].