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A comment on Idempotence: What is it and why should I care?. Parent comment

Re:Idempotence: What is it and why should I care? by tutfbhuf on Monday August 20, 2018 @09:26PM (#17805998)
In category theory we also say h is idempotent iff h^2 = h whereas h is an endomorphism.
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Re:Idempotence: What is it and why should I care? by filmor on Tuesday August 21, 2018 @05:30AM (#17808232)
The "morphism" property is completely unneeded for idempotence and the "endo" part is implied :)
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