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What field did Gaetano Fichera work in?

Mathematical analysis
Quantum physics
Astronomy
Biology

Answer

Mathematical analysis, the field in which Gaetano Fichera worked, involves studying functions, limits, continuity, differentiation, integration, and infinite series. It is a fundamental branch of mathematics that provides the tools for understanding and solving problems in various scientific and engineering disciplines. Fichera's contributions to mathematical analysis include his work on elliptic partial differential equations, variational inequalities, and free boundary problems.