On d-characteristic and $d_Ξ$-characteristic of linear operators
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چکیده
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on the effect of linear & non-linear texts on students comprehension and recalling
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The main objects of our considerations are differential operators generated by a formally selfadjoint differential expression of an even order on the interval [0, b〉 (b ≤ ∞) with operator valued coefficients. We complement and develop the known Shtraus’ results on generalized resolvents and characteristic matrices of the minimal operator L0. Our approach is based on the concept of a decomposing...
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This paper contains proofs of most of the results announced in [9], together with some further developments. The basic analytic question addressed here concerns the mapping properties, on the natural Sobolev spaces, of elliptically totally characteristic pseudodifferential operators, on a compact C∞ manifold with boundary. The ring, Ψb (X), of such operators was described in detail in [8] and i...
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In this article we introduce and study the concept of characteristic degree of a subgroup in a finite group. We define the characteristic degree of a subgroup H in a finite group G as the ratio of the number of all pairs (h,α) ∈ H×Aut(G) such that h^α∈H, by the order of H × Aut(G), where Aut(G) is the automorphisms group of G. This quantity measures the probability that H can be characteristic ...
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ژورنال
عنوان ژورنال: Annales Polonici Mathematici
سال: 1967
ISSN: 0066-2216,1730-6272
DOI: 10.4064/ap-19-2-117-121