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49-XX - Calculus of variations and optimal control; optimization [MSC 2020] |
35-XX - Partial differential equations [MSC 2020] |
49J40 - Variational inequalities [MSC 2020] |
49J20 - Existence theories for optimal control problems involving partial differential equations [MSC 2020] |
49J35 - Existence of solutions for minimax problems [MSC 2020] |
58E30 - Variational principles in infinite-dimensional spaces [MSC 2020] |
35J20 - Variational methods for second-order elliptic equations [MSC 2020] |