what does {x: x belongs to (a,b] where x,a and b belongs to N} mean, does the notation (a,b] have - Maths - Sets Relations and Functions

Question

what does {x: x belongs to (a,b] where x,a and b belongs to N}
mean, does the notation (a,b] have any specific meaning ?

Neha Sethi · Accepted Answer

Dear student
Let A=x:x∈(a,b] where x,a and b∈NIt means the set A contains all those x such that a<x≤b, where x,a and b ∈NNote:(a,b] this means the set  of all those numbers which are strictly greater than aand less than or equal  to b  i
eFor any y∈(a,b] a<y≤b
Regards

what does {x: x belongs to (a,b] where x,a and b belongs to N} mean, does the notation (a,b] have any specific meaning ?