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Four-point condition matrices of edge-weighted trees

open access: yesSpecial Matrices
Formulas for the determinant of distance matrix DT{D}_{T} of tree TT are known in the unweighted case and in the case when the edges of TT have commuting variable weights. Associated with the four-point condition (4PC) and a tree TT are two matrices, the
Azimi Ali   +3 more
doaj   +1 more source

Cohort Profile: The Puberty Cohort in the Danish National Birth Cohort (DNBC). [PDF]

open access: yesInt J Epidemiol, 2020
Ernst A   +10 more
europepmc   +1 more source

Regional and demographic disparities in low-risk hospital deliveries in Brazil's Public Health System. [PDF]

open access: yesEinstein (Sao Paulo)
Siqueira MM   +4 more
europepmc   +1 more source

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