198 citations
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Showing 2011Show all
3 papers · 1 filter
cs.DS2011
An efficient polynomial-time approximation scheme for Steiner forest in planar graphs
David Eisenstat, Philip Klein, Claire Mathieu
We give an approximation scheme for Steiner forest in planar graphs, improving on the previous approximation scheme for this problem, which runs in ti…
math-ph2011
Conjugate flow action functionals
Daniele Venturi
We present a new general method to construct an action functional for a non-potential field theory. The key idea relies on representing the governing equations of the theory relati…
math.NA2011
A new approach for the existence problem of minimal cubature formulas based on the Larman-Rogers-Seidel theorem
Masatake Hirao, Hiroshi Nozaki, Masanori Sawa +1
In this paper we consider the existence problem of cubature formulas of degree 4k+1 for spherically symmetric integrals for which the equality holds in the Möller lower bound. We p…