Maximum and minimum of expressions
Best approximation 8🔒Cyclic fractions 17🔒Cyclic products and signs 7🔒Extrema of cubic expressions 11🔒Extrema of quadratic forms 18🔒Extrema of square-root expressions 17🔒Extrema on a circle or conic 18🔒Extrema under product constraints 14🔒Integer maximisation 7🔒Maximum of products 6🔒Maximum sum of squares 8🔒Minimax problems 18🔒Minimum of sums of squares 18🔒Minimum over sequences 16🔒Quartic expressions and products 14🔒Reciprocal sums 18🔒Sums of pairwise products 10🔒Symmetric expressions under constraints 17🔒Two numbers with fixed sum or product 15🔒