It's the set of all functions from theta to {0,1}.
I came across a paper, where the notation is:
where is a set,
Normally we see exponential such as , where n is a real number.
How should I interpret 2^Theta, is this a matrix where in each entry the base is 2?
Thanks for help.
Thanks a lot.
I don't understhand the first meaning:Do you mean 2^A is a function, but why to {0,1}??It stands for the set of all functions from A to {0,1}
Actually I think it might be the case for power set, since this comes with a definition for a function:
No, he means that 2^A is a set of functions- the set of all functions from A to {0, 1}. And it is to {0, 1} because of the "2". 3^A would be a set of all functions from A to {0, 1, 2}, or more generally, from A to any set containing 3 objects.
Actually I think it might be the case for power set, since this comes with a definition for a function:
Sorry my mistake: basically it's a function that matches two sets into two sets, think of match students into schools. where is the preference of students, and a typo in my previous function, the correct form is:
My original guess was power set too, but I am just no sure about the notation...