Coboundary
= Coboundary
{title2=$b\in\operatorname{im}d^{q-1}$}
An element in the image of the preceding differential of a <cochain complex>. Every <coboundary> is a <cocycle>, since consecutive differentials compose to zero.
= Coboundary
{title2=$b\in\operatorname{im}d^{q-1}$}
An element in the image of the preceding differential of a <cochain complex>. Every <coboundary> is a <cocycle>, since consecutive differentials compose to zero.