DIFFERENCE METHODS FOR INITIAL-VALUE PROBLEMS
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TOPOLOGCAL METHODS FOR VARIATIONAL PROBLEMS WITH SYMMERIES
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PROBLEMS IN TEACHING SECONDARY-SCHOOL MATHEMATICS
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Boundary Value Problems For Operator Differential Equations
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Elementary Differential Equations With Boundary Value Problems
David L.Powers1985 年出版760 页ISBN：
APPROXIMATION ALGORITHMS FOR NP-HARD PROBLEMS
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MIXED BOUNDARY VALUE PROBLEMS IN POTENTIAL THEORY
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Manual of clinical problems in internal medicine
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