But New Madrid has experienced some big quakes in its history. Researchers have geologic evidence of several major earthquakes of around magnitude 7 and 8 striking the area over the past 4,500 years. More recently, the region experienced a series of strong quakes in 1811 and 1812. The first occurred in Arkansas on December 16, 1811, and scientistsâ best estimate for its strength is that it was a magnitude-7.7 earthquake. Six hours later, the region shook again with a similar-sized aftershock.
Unallocated space, also called free space, is defined as the unused portion of the hard drive; file slack is the unused space that is created between the end-of-file marker and the end of the hard drive cluster in which the file is stored.
Deï¬nition 1.1. A Banach space (over R or C) is a complete normed vector space.If X is a vector space with two diVerent norms, kkand kk 0, then the norms are saidto be equivalent if there are positive constants C 1 and C 2 such that C 1 k x k  k x k 0  C 2 k x kfor all x 2 X.eï¬nition 1.1. A Banach space (over R or C) is a complete normed vector space.If X is a vector space with two diVerent norms, kkand kk 0, then the norms are saidto be equivalent if there are positive constants C 1 and C 2 such that C 1 k x k  k x k 0  C 2 k x kfor all x 2 X.