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math.NT2025
A Question of ErdÅs and Graham on Covering Systems
Sarosh Adenwalla
ErdÅs and Graham (ErdÅs and Graham, 1980) asked if there exists an such that the divisors of greater than 1 are the moduli of a distinct covering system with the followin…
math.NT2025
On a Generalisation of a Function of Ron Graham's
Sarosh Adenwalla
Ron Graham introduced a function, , on the non-negative integers, in the 1986 Issue Problems column of \textit{Mathematical Magazine}: For each non-negative integer ,…