Question

Exercises on transposes, permutations, spaces 5.1 etc.
Can someone please explain the homework questions, because I have not seen some of the notation in the MIT videos, lecture summary nor in recitation.
Problem 5.1a): What is P³? We have learned P12 etc but I haven't seen this superscript.
Problem 5.1b): What does the hat (^) over the P mean?
Problem 5.2: What does it mean for an entry of A to be "chosen independently"?
Thank you.

Answer 1

Sorry, P³ means P superscript 3. I guess HTML code isn't accepted at Open Study.

Answer 2

@JohnM Latex is. try \openparen P^3 \closeparen. Should look like this: \(P^3\)