# conull

## English

### Etymology

co- +‎ null

Moreover, if the combinatorial structure on ${\displaystyle X}$ is "induced" by the ${\displaystyle [0;1]}$-shift action of a countable group ${\displaystyle \Gamma }$, then, even without any local finiteness assumptions, there is a Borel choice for ${\displaystyle f}$ which satisfies the constraints on an invariant conull set (i.e., with ${\displaystyle \epsilon =0}$).