Results 71 to 80 of about 9,739,525 (175)
Three Diophantine equations concerning the polygonal numbers [PDF]
Notes on Number Theory and Discrete MathematicsMany authors investigated the problem about the linear combination of two polygonal numbers being a perfect square, i.e., the Diophantine equation mPₖ(x)+nPₖ(y)=z², where Pₖ(x) denotes the x-th k-polygonal number and m, n are positive integers.
Yong Zhang, Mei Jiang, Qiongzhi Tang
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Insect Science, EarlyView.The level of aggressiveness of an individual is a factor that shapes intraguild predation (IGP) interactions. In Nabis americoferus, high aggressiveness leads to an increase in attack rate and IGP against Harmonia axyridis. Moreover, the absence of extraguild prey seems to exacerbate IGP. In docile N.
Pierre Royer +3 more
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Agricultural and Forest Entomology, EarlyView.Myzus persicae showed no detectable behavioural response to Beauveria bassiana‐colonised agar alone. Aphids spent significantly more time in odour fields containing EPF‐infected conspecifics than healthy aphids, agar or blank air. EPF infection may alter host‐associated odours, suggesting pathogen‐mediated cues could influence aphid behaviour and ...
Ben J. Clunie +6 more
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Pell–Lucas diffractive lenses for trifocal multi-trap optical tweezers
JPhys PhotonicsIn this work, we introduce a new family of trifocal diffractive lenses based on the Pell–Lucas number sequence. Two phase configurations are considered: binary-phase and kinoform-type.
Arlen B Pérez-Hernández +5 more
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Agroecology and Transformative Adaptation to Climate Change
Asia Pacific Viewpoint, EarlyView.ABSTRACT This paper examines transformative adaptation to climate change through the EFICAS Project (Eco‐Friendly Intensification and Climate‐resilient Agricultural Systems) implemented across 12 upland communities in northern Laos from 2014 to 2020.
Jean‐Christophe Castella
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A STUDY ON PELL EQUATION [PDF]
, 2020 Pell equation (alternatively called the Pell- Fermat equation) is a type of a Diophantine equation of the form 2 -Dye 2 =1 for a natural number D. If D is a perfect square, then pell equation can be rewritten as y).(x+√y) = 1.similarly, the trivial ...
R, RAMYA
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Solution of an odds inversion problem [PDF]
Notes on Number Theory and Discrete MathematicsConsider the problem of determining the possible numbers of balls of two different colors in an urn such that if two are drawn out at random, the odds that they are different colors are a given value. We present a general solution of this problem for all
Robert K. Moniot
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From Loss to Transformation? Towards Pluralistic and Politicised Agrarian‐Climate Futures
Asia Pacific Viewpoint, EarlyView.ABSTRACT Understanding how actors perceive and anticipate future states of the world is gaining traction in climate change governance scholarship and related calls for sustainability transformations. However, smallholder farmers, indigenous groups, and local communities, who are expected to bear disproportionate burdens of loss and damage from climate ...
Joel Persson +4 more
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Marriner S. Eccles, correspondence with Senator Claiborne Pell
, 1970 Correspondence of Marriner S. Eccles with Claiborne Pell, U.S. Senator from Rhode Island. Includes a copy of an article about Senator Pell\u27s opposition to U.S.
Eccles, Marriner S. (Marriner Stoddard), 1890-1977
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Philosophia Scientiæ, 2005 This paper considers the birth of algebraic proof by looking at the works of Cardano, Viète, Harriot and Pell. The transition from geometric to algebraic proof was mediated by appeals to the Eudoxan theory of proportions in book V of Euclid.
Brendan Larvor
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