Ultrametric fixed points in reduced axiomatic systems
classification
🧮 math.GN
keywords
axiomaticcompletefixedmathreducedsystemultrametricadvances
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The Brezis-Browder ordering principle [Advances Math., 21 (1976), 355-364] is used to get a proof, in the reduced axiomatic system (ZF-AC+DC), of a fixed point result [in the complete axiomatic system (ZF)] over Cantor complete ultrametric spaces due to Petalas and Vidalis [Proc. Amer. Math. Soc., 118 (1993), 819-821].
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