Results 21 to 30 of about 2,056,400 (324)

Extended graphical calculus for categorified quantum sl(2) [PDF]

open access: yes, 2010
A categorification of the Beilinson-Lusztig-MacPherson form of the quantum sl(2) was constructed in the paper arXiv:0803.3652 by the second author. Here we enhance the graphical calculus introduced and developed in that paper to include two-morphisms ...
Khovanov, Mikhail   +3 more
core   +3 more sources

Continuous wave high-power laser propagation in water is affected by strong thermal lensing and thermal blooming already at short distances

open access: yesScientific Reports, 2021
When laser beams propagate through media with non-vanishing absorption, the media is heated resulting in a change of the refractive index, which can lead to thermal lensing and thermal blooming.
Stefan Reich   +4 more
doaj   +1 more source

Virtual neutrino propagation at short baselines

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Within a covariant perturbative field-theoretical approach, the wave-packet modified neutrino propagator is expressed as an asymptotic expansion in powers of dimensionless Lorentz- and rotation-invariant variables. The expansion is valid at high energies
Vadim A. Naumov, Dmitry S. Shkirmanov
doaj   +1 more source

Eight predictive powers with historical and interim data for futility and efficacy analysis

open access: yesStatistical Theory and Related Fields, 2022
When the historical data of the early phase trial and the interim data of the Phase III trial are available, we should use them to give a more accurate prediction in both futility and efficacy analysis. The predictive power is an important measure of the
Ying-Ying Zhang   +2 more
doaj   +1 more source

Open Spinning Strings [PDF]

open access: yes, 2003
We find classical open string solutions in the $AdS_5\times S^5/\Zop_2$ orientifold with angular momenta along the five-sphere. The energy of these solutions has an expansion in integral powers of $\lambda$ with sigma-model corrections suppressed by ...
Stefanski Jr, B.
core   +2 more sources

Crop characterization using an improved scattering power decomposition technique for compact polarimetric SAR data

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2020
Crop characterization using Compact-Pol Synthetic Aperture Radar (CP-SAR) data is of prime interest with the rapid advancements of SAR systems towards operational applications.
Vineet Kumar   +3 more
doaj   +1 more source

Winding number correlation for a Brownian loop in a plane [PDF]

open access: yes, 2019
A Brownian loop is a random walk circuit of infinitely many, suitably infinitesimal, steps. In a plane such a loop may or may not enclose a marked point, the origin, say. If it does so it may wind arbitrarily many times, positive or negative, around that
Hannay, J. H.
core   +3 more sources

A "New Type of Great Power Relationship" and Governance in the International System of the 21st Century

open access: yesJournal of China and International Relations, 2013
In the early decades of the 21st century, the real world of powers is neither the so-called unipolarity of the United States of America as the sole superpower, nor the trans-Atlantic domination of the joint Western hegemony.
Zhongying Pang
doaj   +1 more source

Johann Faulhaber and sums of powers

open access: yes, 1992
Early 17th-century mathematical publications of Johann Faulhaber contain some remarkable theorems, such as the fact that the $r$-fold summation of $1^m,2^m,...,n^m$ is a polynomial in $n(n+r)$ when $m$ is a positive odd number. The present paper explores
Knuth, Donald E.
core   +3 more sources

On pairs of equations with unequal powers of primes and powers of 2

open access: yesAIMS Mathematics
It is proved that every pair of sufficiently large even integers can be represented in the form of a pair of equations, each containing two squares of primes, two cubes of primes, two biquadrates of primes, and $ 30 $ powers of 2.
Li Zhu
doaj   +1 more source

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