Based on [4], we prove a variation of the theorem in title, for equations with periodic coefficients, in Fréchet spaces. The main result gives equivalent conditions ensuring the reduction of such an equation to one with constant coefficient. In the particular case of C ∞ , we obtain the exact analogue of the classical theorem. Our approach essentially uses the fact that a Fréchet space is the l...

We establish new results on the space BV of functions with bounded variation. While it is well known that this space admits no unconditional basis, we show that it is “almost” characterized by wavelet expansions in the following sense: if a function f is in BV, its coefficient sequence in a BV normalized wavelet basis satisfies a class of weak-`1 type estimates. These weak estimates can be empl...

in order to evaluate the effect of water deficit stress on agronomic and morpho-physiological traits in eight populations of the triticum urartu species an experiment was experiment was conducted using a split plot design based on a randomized complete block design with three replications at research station of faculty of agriculture, tabriz university in 2010-2011. analysis of variance indicat...

safflower is an oilseed crop with high adaptability to rainfed conditions of iran. it is native crop in iran and due to some morphological characters specially root system it shows good resistance to drought stress. in present investigation to study genetic variation in fall planting of safflower in rainfed condition 100 genotypes were evaluated in a 10×10 simple lattice square design with two ...

In clinical research, the longitudinal data is gaining popularity. A pre-test is used as the baseline to minimize variation cross subjects. The example in this paper will show that repeated measures are taken not only after treatment but also before treatment with uneven time spaces. Two-piecewise random coefficient model is a powerful tool to model trends corresponding to time before and after...

Pistacia atlantica is the most important tree species for the economy of many rural areas in west of Iran, but no effort has been made for the genetic improvement of this species. The aim of this investigation was to study the genetic variation and inheritance of early growth traits in P. atlantica. For this purpose, three wild pistachio populations comprising 60 randomly selected adult trees f...

sainfoin (onobrychis viciifolia scop.) is a perennial forage legume has recognized for its feed value and high stability. this experiment was conducted to investigate the relationship among morphological and agronomic traits using multivariate statistical methods including correlation, regression and factor analysis. twenty one accessions of sainfoin were evaluated in a randomized complete bloc...