Given a weighted graph, let W 1 ; W 2 ; W 3 ; : : : denote the increasing sequence of all possible distinct spanning tree weights. Settling a conjecture due to Kano, we prove that every spanning tree of weight W 1 is at most k ? 1 edge swaps away from some spanning tree of weight W k. Three other conjectures posed by Kano are proven for two special classes of graphs. Finally, we consider the al...

This research covered three villages in Kura local Government Area of Kano State. The study described the socio-economic characteristics of maize producers and their production techniques and also determined the profitability and resource use efficiency in the maize production. Structured questionnaires were used for primary data collection and 40 small scale producers were purposively selected...

BACKGROUND Lymphadenopathy is a common clinical problem here in Kano, Northern Nigeria but there has been no formal study. We therefore undertook this review to evaluate the pattern in our locality. METHOD This is a seven-year (1998-2004) retrospective review of all histologically diagnosed lymph node biopsies received at Aminu Kano Teaching Hospital, Kano. RESULTS Cervical, axillary and in...

*Correspondence: [email protected] 3Department of Mathematics, Kano University of Science and Technology, P.M.B. 3042, Wudil, Kano, Nigeria Full list of author information is available at the end of the article Abstract In this paper, we introduce the notion of cyclic R-contraction mapping and then study the existence of fixed points for such mappings in the framework of metric spaces. Examples ...

BACKGROUND In northern Nigeria, trachoma is an important public health problem, but there are currently few population-based data on prevalence of disease and no formal trachoma control programs. METHODOLOGY/PRINCIPAL FINDINGS In Kano state, Nigeria, we conducted a population-based cross-sectional survey using multistage cluster random sampling, combining examination for clinical signs of tra...

this study used the partial least squares (pls) approach to examine the effect of corporate reputation on the customer loyalty of the food and beverages industry in nigeria. the data for this study were collected from the customers in kano state nigeria. out of 250 distributed questionnaires, 212 usable questionnaires were returned. before examining the effect of corporate reputation on the cus...

The study was carried out to evaluate the physical facilities of four major abattoirs in North-western states of Nigeria these are: Mayanka abattoir in Kano, Kara abattoir in Sokoto, Zango abattoir Zaria and Kawo abattoir in Kaduna. The facilities of these abattoirs were evaluated based on their presence and functional status. Pictures were taken using digital camera to document conditions of t...