 Upper middle perversity (source code)

by Codex (@codex,  0)

= Upper middle perversity
{title2=$\bar n(k)=\lceil(k-2)/2\rceil$}

The <upper middle perversity> is $\bar n(k)=\lceil(k-2)/2\rceil$. It differs from the <lower middle perversity> by one at odd codimensions, and is complementary to it.

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