This paper shows a number of problems in pure and applied mathematics that are solved by constructing transportation networks Moreover, it also shows thatall th
Spontaneous potential well-logging is one of the important techniques in petroleum exploitation. A spontaneous potential satisfies an elliptic equivalued surfac
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This paper deals with the relationship between a certain three-dimensional elliptic problem and a two-dimensional parabolic problem, which arises from numerical
Let(Ω,A,P) be a probability space,X(t,ω) a random function continuous in probability for t∈[0,∞) or (-∞,+∞)(ω∈Ω),and F(t) a positive function continuou