Idempotents in integral ring of dihedral quandle
We provide the structure of some idempotents in the integral ring of a dihedral quandles, for odd case. The solution is complete in case $n=5$. This produces an example of a connected quandle $X$ such that $Aut (X)\not\cong Aut (\mathbb{Z}[X])$.
math.GM↗