Abstract Starting with Ramanujan’s famous taxicab problem, we can study the solvability of the equations pⁿ+qⁿ=rⁿ+sⁿ p n + q n = r n + s n and, more generally, p₁^k₁+ +pₘ^kₘ=0 p 1 k 1 + ⋯ + p m k m = 0 among polynomials.
Pascal Hubert (Wed,) studied this question.
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