Defining numbers in terms of their divisors
β Scribed by Speijer, D.
- Book ID
- 109823037
- Publisher
- Nature Publishing Group
- Year
- 2009
- Tongue
- English
- Weight
- 308 KB
- Volume
- 461
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/461037c
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
In their book Entailment, Anderson and Belnap investigate the consequences of defining r (it is necessary that p) in system E as (p~p)~-p. Since not all theorems are equivalent in E, this raises the question of whether there are reasonable alternative definitions of necessity in E. In this paper, it
## Defining set The defining number The strong defining number Harary graph a b s t r a c t In a given graph G = (V , E), a set of vertices S with an assignment of colors to them is said to be a defining set of the vertex coloring of G if there exists a unique extension of the colors of S to a c