Results 11 to 20 of about 532 (94)
Philosophical Perspectives, Volume 37, Issue 1, Page 145-163, December 2023., 2023 Abstract Some conditional involving factive emotives present a prima facie challenge to the thesis that conditionals obey modus ponens. Drawing on recent work by Timothy Williamson, I offer an error‐theoretic diagnosis of the phenomenon, one that appeals to a heuristic that we use in suppositional reasoning.
Christina Hope Dietz
wiley +1 more source
Physiologia Plantarum, Volume 175, Issue 6, November/December 2023., 2023 Abstract Soil phosphorus (P) application is the most common fertilisation technique but may involve constraints due to chemical fixation and microbial immobilisation. Furthermore, excessive P fertilisation leads to P runoff into water bodies, threatening ecosystems, so targeted foliar P fertilisation is an interesting alternative.
Jon Niklas Henningsen +5 more
wiley +1 more source
Primes in short intervals [PDF]
, 2004 Contrary to what would be predicted on the basis of Cram\'er's model concerning the distribution of prime numbers, we develop evidence that the distribution of $\psi(x+H)- \psi(x)$, for $0\le x\le N$, is approximately normal with mean $\sim H$ and ...
Bogomolny +10 more
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Fractal in the statistics of Goldbach partition
, 2006 Some interesting chaos phenomena have been found in the difference of prime numbers. Here we discuss a theme about the sum of two prime numbers, Goldbach conjecture. This conjecture states that any even number could be expressed as the sum of two prime numbers.
Liang, Wang, Yan, Huang, Zhi-cheng, Dai
openaire +2 more sources
On Alternating and Symmetric Groups Which Are Quasi OD-Characterizable
, 2017 Let $\Gamma(G)$ be the prime graph associated with a finite group $G$ and $D(G)$ be the degree pattern of $G$. A finite group $G$ is said to be $k$-fold OD-characterizable if there exist exactly $k$ non-isomorphic groups $H$ such that $|H|=|G|$ and $D(H)=
Moghaddamfar, Ali Reza
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Restricted linear congruences [PDF]
, 2016 In this paper, using properties of Ramanujan sums and of the discrete Fourier transform of arithmetic functions, we give an explicit formula for the number of solutions of the linear congruence $a_1x_1+\cdots +a_kx_k\equiv b \pmod{n}$, with $\gcd(x_i,n ...
Bibak, Khodakhast +4 more
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History of Catalan numbers [PDF]
, 2014 We give a brief history of Catalan numbers, from their first discovery in the 18th century to modern times. This note will appear as an appendix in Richard Stanley's forthcoming book on Catalan numbers.Comment: 10 ...
Pak, Igor
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Effects of temporal and spatial variability in energy fluxes on phytoplankton
Limnology and Oceanography, Volume 71, Issue 1, January 2026.Abstract Climate change has significantly altered the energy dynamics of lakes; however, little is known of how the temporal and spatial variation in energy fluxes impacts the structure and function of lake ecosystems. This study combined long‐term (2011–2018) measurements of lake energy fluxes with environmental, nutrient, and phytoplankton data at ...
Jian Zhou +4 more
wiley +1 more source
Commodity risk assessment of Petunia spp. and Calibrachoa spp. unrooted cuttings from Uganda
EFSA Journal, Volume 24, Issue 1, January 2026.Abstract The European Commission requested the EFSA Panel on Plant Health to evaluate the likelihood of pest freedom at entry in the EU, including both regulated and non‐regulated pests, potentially associated with unrooted cuttings of the genera Petunia and Calibrachoa produced under physical isolation in Uganda.
EFSA Panel on Plant Health (PLH) +34 more
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The hyperbolic, the arithmetic and the quantum phase
, 2003 We develop a new approach of the quantum phase in an Hilbert space of finite dimension which is based on the relation between the physical concept of phase locking and mathematical concepts such as cyclotomy and the Ramanujan sums.
Planat, Michel, Rosu, Haret
core +2 more sources