- #1
binbagsss
- 1,259
- 11
Homework Statement
What is the dimension of ##M_{24}##?
Homework Equations
attached
The Attempt at a Solution
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I am confused what the (mod 12) is referring to- is it referring to the ##[k/12]## where the square brackets denote an equivalent class and the ## k \equiv 2## / ##k \notequiv 2## or just the ##[k/12]##?
I am confused because I thought ##k \equiv 2## (mod 12) only when ##k=24##, so for the dimension ##M_2## we would need to look at the top definition, however clearly the bottom has been used, which makes me think that the '(mod ##12##)' is only referring to the square brackets?
In which case for ##M_{24}## I need to look at the top line and conclude ## dim M_{24}=3##, however if (mod 12) is referring to both then I need to look at the bottom line and conclude ##dim M_{24}=2##, however in this case it makes no sense how we have got ##dim M_2=0 ##
Thanks .