Resolution of singularities.

Kollár 3.4: Shamil Asgarli and Terrence George
Kollár 3.5: Minsik Han
Kollár 3.6: Tangli Ge
Kollár 3.7: Michael Mueller
Kollár 3.8: Claudia Yun
Kollár 3.9: Giovanni Inchiostro
Kollár 3.10: Yiwei Zhu
Kollár 3.11: Stephen Obinna
Kollár 3.12: Kyle Ferendo
Kollár 3.13: Dan Abramovich