In mathematics, Cameron–Fon-Der-Flaass IBIS theorem arises in the dynamical algebraic combinatorics.
The theorem was discovered in 1995 by two mathematicians Peter Cameron and Dima Fon-Der-Flaas.
[1] The theorem is considered to be a link between group theory and graph theory as it studies redundancy of a group.
,[clarification needed] then the following are equivalent:
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