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Sums and strict sums of biquadrates in 𝔽 q [t], q{3,9}. (English) Zbl 05837630
MSC:
11T55Arithmetic theory of polynomial rings over finite fields
11C08Polynomials (number theory)
11T06Polynomials over finite fields or rings
11E76Forms of degree higher than two
11P05Waring’s problem and variants