In his thesis  M. J. Piff conjectured that a matroid, which is algebraic over a fieldFit) witht transcendent overF, must be algebraic overF. Two proofs have appeared, one by Shameeva  and another one by the author , but both are unsatisfactory. In this paper I will settle conjecture by applying a theorem of Seidenberg.
AMS subject classification (1980)05 B 35 12 F 20
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