4.5 (1973)

Partially Solved

a) (J. Milnor). Is it true that an arbitrary finitely generated group has either polynomial or exponential growth?
b) Is it true that an arbitrary finitely presented group has either polynomial or exponential growth?
c) Is it true that every finitely generated group with undecidable word problem has exponential growth?

Progress

a) No.

c) No (R. I. Grigorchuk, Soviet Math. Dokl., 28 (1983), 23–26).

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