共 50 条
- [41] Substitutions and partitions of the set of positive integers SUBSTITUTIONS IN DYNAMICS, ARITHMETICS AND COMBINATORICS, 2002, 1794 : 81 - 98
- [42] STOPPING TIME PROBLEM ON POSITIVE INTEGERS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1975, 22 (01): : A58 - A58
- [47] Closure functions on the set of positive integers SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY, 1996, 39 (04): : 337 - 346
- [48] A UNIQUE TYPE OF PARTITION OF THE POSITIVE INTEGERS AMERICAN MATHEMATICAL MONTHLY, 1986, 93 (04): : 300 - 300
- [49] MAPPINGS OF POSITIVE INTEGERS AND SUBSPACES OF M NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1973, 20 (07): : A635 - A635
- [50] On positive integers with a certain nondivisibility property ANNALES MATHEMATICAE ET INFORMATICAE, 2008, 35 : 11 - 19