Results 101 to 110 of about 359,212 (230)

Observers seeing gravitational Hilbert spaces: abstract sources for an abstract path integral

open access: yesJournal of High Energy Physics
The gravitational path integral suggests a striking result: the Hilbert space of closed universes in each superselection sector, a so-called α-sector, is one-dimensional.
Hong Zhe Vincent Chen
doaj   +1 more source

Long-time asymptotic behavior for the Hermitian symmetric space derivative nonlinear Schrödinger equation

open access: yesAdvanced Nonlinear Studies
Resorting to the spectral analysis of the 4 × 4 matrix spectral problem, we construct a 4 × 4 matrix Riemann–Hilbert problem to solve the initial value problem for the Hermitian symmetric space derivative nonlinear Schrödinger equation.
Chen Mingming, Geng Xianguo, Liu Huan
doaj   +1 more source

A problem in hilbert space

open access: yesIndagationes Mathematicae (Proceedings), 1960
van Lint, J.H., Post, K.A.
openaire   +3 more sources

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