An application of subelliptic operators to the mixed problem for a second order hyperbolic equation

1984 ◽  
Vol 9 (2) ◽  
pp. 107-135 ◽  
Author(s):  
P.R. Popivanov ◽  
T.V. Gramchev
1995 ◽  
Vol 2 (3) ◽  
pp. 299-311
Author(s):  
S. Kharibegashvili

Abstract The theorem of unique solvability of a spatial problem of Darboux type in Sobolev space is proved for a second-order hyperbolic equation.


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