We prove that Fomin’s generalization of Lindstrom’s lemma for paths on acyclic directed graphs to walks general also generalizes a theorem Stembridge in the same way. Moreover, we show whenever family operations satisfies Lindstrom-type determinant relation, related Stembridge-type Pfaffian relation. give example applications Kenyon and Wilson’s work groves Talaska’s alternating flows.

OBJECTIVE Existing research suggests that there is a relation between academic/cognitive deficits and externalizing behavior in young children, but the direction of this relation is unclear. The present study tested competing models of the relation between academic/cognitive functioning and behavior problems during early childhood. METHOD Participants were 221 children (120 boys, 101 girls) w...

background scrophularia striata (scrophulariaceae family) is an herbaceous plant that is traditionally used for treatment of microbial infections. objectives antimicrobial and antioxidant activity of different extracts (methanolic, ethanolic, aqueous and ethyl acetate) from s. striata aerial parts was evaluated. materials and methods the antimicrobial activity of different extracts from s. stri...

the purpose of this study was to investigate relation between creativity and entrepreneurial intentions. statistical population was consisted of last-year juniors of agriculture from two agricultural collages at the university of tehran (karaj’s agricultural and natural resources campus and college of aburaihan) (n=420(. 201 ones were selected as statistical sample. the main instrument was a qu...

background breast feeding appears to play a role in determining obesity and abdominal obesity during childhood, specifically in children with a history of low birth weight. objective the purpose of this study is to investigate the relation of breast-feeding with either of abdominal obesity and obesity among iranian school children. materials and methods a total of 1184 students (625 girls and 5...