An interval [a; a + d] of natural numbers veriΓΏes the property of no coprimeness if and only if every element a + 1; a + 2; : : : ; a + d -1 has a common prime divisor with extremity a or a + d. We show the set of such a and the set of such d are recursive. The computation of the ΓΏrst d leads to ris
On surfaces whose Grassmann image has curvature of at least one
β Scribed by Yu. A. Nikolaevskii
- Publisher
- Springer US
- Year
- 1991
- Tongue
- English
- Weight
- 916 KB
- Volume
- 53
- Category
- Article
- ISSN
- 1573-8795
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract ## Background and Objectives Sound enamel manifests peak transparency in the nearβIR (NIR) at 1310βnm, therefore the nearβIR is ideally suited for high contrast imaging of dental caries. The purpose of this study was to acquire images of early demineralized enamel on the buccal and occ
## Reseirrch problems Problem 142. The symmetric genus of a group G is the minimum genus of a surface on which G acts. Let A, denote the alternating group of degree n, y(G) denote the genus of the group G, and a(G) the symmetric genus of G. Is the following conjecture true? Conjecture: For at leas