Abstract In the present paper we prove a unique common fixed point theorem
for four weakly compatible self maps in non-Archimedean Menger
PM-spaces without using the notion of continuity. Our result
generalizes and extends the results of Khan and Sumitra [M.A. Khan, Sumitra, A common fixed point theorem in non-Archimedean Menger PM-space,
Novi Sad J. Math. 39 (1) (2009), 81--87] and others.
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