• Links to reading material:
  topology notes of Friedhelm Waldhausen:
  • Lecture: Topologie (121 p.) [ dvi 0.7 MB | djvu 0.7 MB | pdf 0.7 MB ]
  • Lecture: Algebraische Topologie (151 p.) [ dvi 0.5 MB | djvu 0.8 MB | pdf 0.8 MB ]
  • Lecture: Algebraische Topologie II (106 p.) [ dvi 0.4 MB | djvu 0.6 MB | pdf 0.6 MB ]
  • Lecture: Algebraische Topologie III ( 95 p.) [ dvi 0.5 MB | djvu 0.5 MB | pdf 0.7 MB ]
• Models of the projective plane, possibly punctured:
  • Appuhn
  • Grauman
  • Rios
  • Tal
  • Tichenor