S. Sadov

activity

20032005

most citedCoupling of the Legendre polynomials with kernels

∣ x - y ∣^{α}

and

ln ∣ x - y ∣

1 citations · 2 across the 4 of their papers we have counts for

collaborators

Showing 2004Show all

2 papers · 1 filter

math.DS2004

Two-system of a Hamiltonian system

M. F. Kondratieva, S. Yu. Sadov

For a Hamiltonian system in R^{2n}, its two-system is defined in the phase space R^{2n} x sp(2n,R). In a sense, it is a combination of the original system and its system in variati…

math.GM2004★ 1 cited

On a necessary and sufficient cyclicity condition for a quadrilateral

Sergey Sadov

A convex quadrilateral with sides a,b,c,d, and diagonals p,q is cyclic iff abp-bcq+cdp-daq=0. This condition, in spite of its simplicity, appears to be unnoted and unexpectedly pro…