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This is a kind of silly question, but I don't know where else to ask. Suppose I wanted to say "Ceci n'est pas une pipe" but with $K(\pi,n)$ substituted for "pipe." Would the article be "un" or "une"?

In case there are additional complications in the translation: What would be the French for "This is not a $K(\pi,n)$," where "this" refers to a picture over/under/beside the text?

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    What is $K(\pi,n)$ ?2012-10-23
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    Maybe it is better to say "Ceci n'est pas un espace $K(\pi,n).$2012-10-23
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    @Phira: an Eilenberg-Maclane space.2012-10-23
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    But maybe "un $K(\pi,n)$" works, suppressing "espace", which would be understood.2012-10-23
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    You should check Serre's foundational paper on the homotopy groups of spheres! (I'd imagine it's in French?)2012-10-24

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