Wednesday, 5pm 
Hausdorff Dimension lecture by Prof. Gerald A. Edgar 
Henri Lebesgue 
Constantin Caratheodory 
of the concepts
selfsimilar sets 

Felix Hausdorff 
1901  Lebesgue proposed a new way to measure area in the plane, volume
in 3space, etc.
1914  Caratheodory showed how to compute length in any dimension, and (more generally) pdimensional measure in qdimensional space for integers p ≤ q. 1918  Hausdorff observed that Caratheodory's construction works  and is interesting  even when p is not an integer. 1929 & later  Besicovitch developed the Hausdorff measure into a powerful mathematical tool. 
A. S. Besicovitch 