Motivated by the problem of symmetric collapsing gas-dynamical shocks wepresent a scalar toy model that captures blowup of focusing waves. This modelis simple enough to allow for explicit calculations, and we study some solutions indetail. As a scalar model it does not describe reflection of waves and this necessitatesa new concept of weak solut...
Jenssen, Helge Kristian (The Pennsylvania State University)
University of Minnesota, Institute for Mathematics and its Applications.
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Sylvia Silvola of Virginia, Minnesota, and Ellen Daufney of Calumet, Minnesota, wearing graduation robes and hats with tassles, standing in front of Griggs Hall on University of Minnesota - Duluth campus on August 18, 1967.
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Sylvia Borken stands at the produce counter of Knox Market, which was located at Knox and Plymouth Avenues in Minneapolis. Many small Jewish family-owned and run grocery stored served the North Side neighborhood. Small business ownership was an avenue to success that was open to the earliest group of Jewish immigrants.
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