Results 31 to 40 of about 14,326,834 (335)

Measuring Multipartite Concurrence with a Single Factorizable Observable [PDF]

open access: yes, 2006
We show that, for any composite system with an arbitrary number of finite-dimensional subsystems, it is possible to directly measure the multipartite concurrence of pure states by detecting only one single factorizable observable, provided that two ...
Florian Mintert   +5 more
core   +2 more sources

The twentieth Fermat number is composite [PDF]

open access: yesMathematics of Computation, 1988
The twentieth Fermat number, F 20 = 2 2 20 + 1 {F_{20}
Young, Jeff, Buell, Duncan A.
openaire   +1 more source

Adaptive Speaker Recognition Based on Hidden Markov Model Parameter Optimization

open access: yesIEEE Access, 2020
The Hidden Markov Model (HMM) is a widely used method for speaker recognition. During its training, the composite order of the measurement probability matrix and the number of re-evaluations of the initial model affect the speed and accuracy of a ...
Yangjie Wei
doaj   +1 more source

The Preparation, Characterization, and Influence of Multiple Electroless Nickel-Phosphorus (Ni-P) Composite Coatings on Poplar Veneer

open access: yesBioResources, 2015
Nickel-Phosphorus (Ni-P) composite coatings were prepared on a poplar veneer surface via a simple electroless nickel (Ni) approach. The substrate deformation, flatness, crystalline structure, and wear resistance of the Ni-P composite coatings were ...
Yanfei Pan, Xin Wang, Jintian Huang
doaj   +1 more source

BICEP2 constrains Composite Inflation [PDF]

open access: yes, 2014
In light of BICEP2, we reexamine single field inflationary models in which the inflaton is a composite state stemming from various four-dimensional strongly coupled theories. We study in the Einstein frame a set of cosmological parameters, the primordial
Channuie, Phongpichit
core   +1 more source

Compositional Bernoulli numbers

open access: yes, 2007
16 pages, to appear in Afr.
Blandin, Hector, Diaz, Rafael
openaire   +2 more sources

Highly Composite Numbers

open access: yes, 2023
The main result of this thesis is to show that there are only finitely many integers $n$ such that both $n$ and $d(n)$ are highly composite numbers at the same time, where $d(n)$ is the divisor function. Bertrand's postulate [4] is used many times throughout the thesis and allows us to write a proof that is as simple (and as short) as possible.
openaire   +2 more sources

Large N Expansion for Strongly-coupled Boson-Fermion Mixtures [PDF]

open access: yes, 2010
We study a many-body mixture of an equal number of bosons and two-component fermions with a strong contact attraction. In this system bosons and fermions can be paired into composite fermions.
Abu-Raddad   +36 more
core   +1 more source

Narayana numbers and Schur–Szegő composition

open access: yesJournal of Approximation Theory, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kostov, Vladimir   +2 more
openaire   +2 more sources

Maximum occupation number for composite boson states

open access: yes, 2002
One of the major differences between fermions and bosons is that fermionic states have a maximum occupation number of one, whereas the occupation number for bosonic states is in principle unlimited.
D. VAN NECK   +6 more
core   +1 more source

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