Killing $ f$-manifolds of constant type

Abstract

The velocity of second sound in 3He-4He mixtures was measured near their lambda transition temperatures under their saturated vapour pressure with molar concentrations of 3He of 0.449,0.513. 0,544 and 0560. Together with the data for lower concentrations previously reported, this gives information on the concentration dependence of the critical exponents. the amplitudes of second sound and the superfluid fraction In particular. for the critical exponent, [, the universality concept seems to be satislied for the concentration range up to 0,560 along the path of constant chemical potential difference, $.

On geometry of weakly cosymplectic manifolds

“…By definition, M is closely cosymplectic. In view of [12], M is locally equivalent to the direct product of a nearly Kählerian manifold by a real line.…”