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I'm halfway through a question on a past differential geometry exam, and suddenly in comes a matrix g a member of SL(2,C) (where C denotes the complex numbers)
Now, I can't remember how to express a general element of this group: I know the matrix must be
[tex]\left(\begin{array}{cc}a&b\\c&d\end{array}\right)[/tex] such that ad-bc=1, but can this be expressed in a more precise way in the complex case (i.e. with fewer than four unknowns, maybe by utilising the complex conjugate)?
I've tried looking on the internet, but to no avail. I would really appreciate someone helping, since I could do with getting on with the question!
Thanks in advance!
Now, I can't remember how to express a general element of this group: I know the matrix must be
[tex]\left(\begin{array}{cc}a&b\\c&d\end{array}\right)[/tex] such that ad-bc=1, but can this be expressed in a more precise way in the complex case (i.e. with fewer than four unknowns, maybe by utilising the complex conjugate)?
I've tried looking on the internet, but to no avail. I would really appreciate someone helping, since I could do with getting on with the question!
Thanks in advance!