[wtetzner]

"Idempotence is the property of certain operations in mathematics and computer science, that they can be applied multiple times without changing the result beyond the initial application."[1]

[1] https://en.wikipedia.org/wiki/Idempotence

[firat]

What is the definition of "result". My point is that result in this case is a "change of state" vs "no change in state".

[rhizome]

the result of multiple log out attempts will be "attemptor will be logged out."