Bray, M., Kobakhidze, M. N., Kwo, O. Shadow Education in Myanmar: Private Supplementary Tutoring and its Policy Implications

$(m,n)$-algebraically compactness and $(m,n)$-pure injectivity

In this paper‎, ‎we introduce the notion of $(m,n)$-‎algebr‎aically compact modules as an analogue of algebraically‎ ‎compact modules and then we show that $(m,n)$-algebraically‎ ‎compactness‎ ‎and $(m,n)$-pure injectivity for modules coincide‎. ‎Moreover‎, ‎further characterizations of a‎ ‎$(m,n)$-pure injective module over a commutative ring are given‎.

Finding Minimum Spanning Trees in O(m (m;n)) Time

We describe a deterministic minimum spanning tree algorithm running in time O(m (m; n)), where is a natural inverse of Ackermann's function and m and n are the number of edges and vertices, respectively. This improves upon the O(m (m; n) log (m; n)) bound established by Chazelle in 1997. A similar O(m (m; n))-time algorithm was discovered independently by Chazelle, predating the algorithm prese...

O-33: Serum Anti-M

Shadow Education: School Quality and Demand for Private Tutoring in Korea†‡

Private tutoring is known to be pervasive in many parts of the world, and yet has received scanty attention from economists. This paper empirically examines the determinants of the demand for private tutoring in South Korea, where the thriving and expanding industry of private tutoring industry already constitutes a major conduit for education alongside formal schooling. Korean households spend...

$(m,n)$-Hyperideals in Ordered Semihypergroups

In this paper, first we introduce the notions of an $(m,n)$-hyperideal and a generalized $(m,n)$-hyperideal in an ordered semihypergroup, and then, some properties of these hyperideals are studied. Thereafter, we characterize $(m,n)$-regularity, $(m,0)$-regularity, and $(0,n)$-regularity of an ordered semihypergroup in terms of its $(m,n)$-hyperideals, $(m,0)$-hyperideals and $(0,n)$-hyperideal...