Band 4 (Title 16 to 19) Band 4 Track 11 B3 Fixed Points and Invariant Lines Band 4 Track 12 B3 Fixed Points and Invariant Lines Band 4 Track 13 B3 Fixed Points and Invariant Lines Band 4 Track 14 B3 Fixed Points and Invariant Lines Band 4 Track 15 B3 Fixed Points and Invariant Lines Band 4 Track 16 B3 Fixed Points and Invariant Lines Band 4 Track 17 B3 Fixed Points and Invariant Lines Band 4 Track 18 B3 Fixed Points and Invariant Lines