\succnsim
The symbol \succnsim is used in mathematical notation to denote that one element is neither succeeding nor similar to another element. It is a negated relation that combines the concepts of succession and similarity, indicating that neither condition holds between the two elements in question.
Element 'a' is neither succeeding nor similar to element 'b'.
a \succnsim b
Element 'x' is neither succeeding nor similar to element 'y'.
x \succnsim y
Element 'p' is neither succeeding nor similar to element 'q'.
p \succnsim q