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    Positivity of Fundamental Matrix and Exponential Stability of Delay Differential System by Alexander Domoshnitsky, Roman Shklyar, Mikhail Gitman, Valery Stolbov

    Published 2014-01-01
    “…The classical Wazewski theorem established that nonpositivity of all nondiagonal elements pij  (i≠j,  i,j=1,…,n) is necessary and sufficient for nonnegativity of the fundamental (Cauchy) matrix and consequently for applicability of the Chaplygin approach of approximate integration for system of linear ordinary differential equations xi′t+∑j=1n‍pijtxjt=fit,   i=1,…,n. Results on nonnegativity of the Cauchy matrix for system of delay differential equations xi′t+∑j=1n‍pijtxjhijt=fit,   i=1,…,n, which were based on nonpositivity of all diagonal elements, were presented in the previous works. …”
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    Efektivitas Konseling Kelompok Tekhnik Cognitive Restructuring Untuk Meningkatkan Konsep Diri Siswa di SMK Negeri Singaraja by Megawati Ricky, I Ketut Gading, Putu Ari Dharmayanti

    Published 2023-07-01
    “…The number of inhabitants in this review were understudies of class XI Friendliness SMK N 1 Singaraja what's more, a sum of 3 classes. …”
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