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https://doi.org/10.1007/978-1-4612-5282-5Boundary value problem; Derivative; Eigenvalue; Equations; differential equation; hyperbolic equation; maxaddition 发表于 2025-3-22 03:48:08
Hyperbolic Equations,n the simplest case of the wave equation in two independent variables* . it is easily seen that the maximum of a nonconstant solution . in a domain . may occur at an interior point. For example, we observe that the function . satisfies the above equation, and that it attains its maximum in the square 0 < . < ., 0 < . < ., at the center (./2, ./2).OFF 发表于 2025-3-22 06:21:36
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Elliptic Equations,Let .(. .,..., .) be a twice continuously differentiable function defined in a domain . in .-dimensional Euclidean space. The . or . Δ is defined as .. If the equation Δ. = 0 is satisfied at each point of a domain ., we say that . is . in . or, simply, that . is a ..heart-murmur 发表于 2025-3-22 15:34:45
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ations have inspired us to prepare this book. Prague, Czech Republic Miroslav K´ arn´ y October 2004 Josef B¨ ohm Tatiana V. Guy Ladislav Jirsa Ivan Nagy Petr Nedoma Ludv´ ?k Tesa? r Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BLAZE 发表于 2025-3-23 09:00:06
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