# An improved estimate concerning 3n+1 predecessor sets

Acta Arithmetica (1993)

- Volume: 63, Issue: 3, page 205-210
- ISSN: 0065-1036

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topGünther Wirsching. "An improved estimate concerning 3n+1 predecessor sets." Acta Arithmetica 63.3 (1993): 205-210. <http://eudml.org/doc/206516>.

@article{GüntherWirsching1993,

author = {Günther Wirsching},

journal = {Acta Arithmetica},

keywords = {Krasikov inequalities; Collatz function; -conjecture; trajectories},

language = {eng},

number = {3},

pages = {205-210},

title = {An improved estimate concerning 3n+1 predecessor sets},

url = {http://eudml.org/doc/206516},

volume = {63},

year = {1993},

}

TY - JOUR

AU - Günther Wirsching

TI - An improved estimate concerning 3n+1 predecessor sets

JO - Acta Arithmetica

PY - 1993

VL - 63

IS - 3

SP - 205

EP - 210

LA - eng

KW - Krasikov inequalities; Collatz function; -conjecture; trajectories

UR - http://eudml.org/doc/206516

ER -

## References

top- [1] R. E. Crandall, On the '3x+1' problem, Math. Comp. 32 (1978), 1281-1292. Zbl0395.10013
- [2] I. Krasikov, How many numbers satisfy the 3x+1 conjecture?, Internat. J. Math. Math. Sci. 12(4) (1989), 791-796. Zbl0685.10008
- [3] J. C. Lagarias, The 3x+1 problem and its generalizations, Amer. Math. Monthly 92 (1985), 3-21. Zbl0566.10007
- [4] H. Müller, Das '3n+1' Problem, Mitt. Math. Ges. Hamburg 12 (1991), 231-251.
- [5] J. W. Sander, On the (3N+1)-conjecture, Acta Arith. 55 (1990), 241-248. Zbl0707.11017

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