Results 21 to 30 of about 11,602 (209)
منظومة فيبوناتشى الرقمية کمصدر رياضي لإثراء التصميم [PDF]
المجلة العلمية لكلية التربية النوعية - جامعة المنوفية, 2017 إن التوجه للبحث عن مرجعيات ومصادر للمعرفة تتميز بالأصالة وتضاف الى المخزون المرجعي للمصمم لتکون خلفيات فکرية ومنابع معرفة والهام يعد من أهم الإشکاليات التصميمية فعملية التصميم متجددة ومتطورة وتتزامن مع متطلبات العصر من تحديث وتغيير وبالتالي وجب البحث في ...
اسلام محمد السيد هيبة
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Determinant-preserving blind signatures from Hadamard-type t-Jacobsthal–Leonardo sequences [PDF]
Notes on Number Theory and Discrete MathematicsIn this paper, we introduce a new class of sequences called the termed Hadamard-type t-Jacobsthal-Leonardo sequence which is generated by applying a Hadamard-type product to the characteristic polynomials of the t-Jacobsthal and Leonardo sequences.
Elahe Mehraban +3 more
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Non-Fisherian generalized Fibonacci numbers [PDF]
Notes on Number Theory and Discrete MathematicsUsing biology as inspiration, this paper explores a generalization of the Fibonacci sequence that involves gender biased sexual reproduction. The female, male, and total population numbers along with their associated recurrence relations are considered ...
Thor Martinsen
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Salvator Mundi: an investigation of the painting’s materials and techniques
Heritage Science, 2020 Before the start of its restoration in 2007, the Salvator Mundi was thought to be one of a number of copies of a long-lost Leonardo da Vinci painting, depicting Christ giving a blessing with his right hand while holding a crystal orb in his left.
Nica Gutman Rieppi +7 more
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Some infinite series summations involving linear recurrence relations of order 2 and 3 [PDF]
Notes on Number Theory and Discrete MathematicsThis paper extends known results of second and third order recursive sequences through extensive formulations of properties of the roots of their characteristic equations, some are old but most are new. They are applied to novel studies of Σₙ₌ₒ^∞ aₘₙ/10ⁿ⁺
Anthony G. Shannon +4 more
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On the Leonardo quaternions sequence
Hacettepe Journal of Mathematics and StatisticsIn the present work, a new sequence of quaternions related to the Leonardo numbers -- named the Leonardo quaternions sequence -- is defined and studied. Binet's formula and certain sum and binomial-sum identities, some of which derived from the mentioned formula, are established.
Patrícia Beites +1 more
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The Fibonacci sequence and the nature of mathematical discovery: A semiotic perspective
Sign Systems Studies, 2005 This study looks at the relation between mathematical discovery and semiosis, focusing on the famous Fibonacci sequence. The serendipitous discovery of this sequence as the answer to a puzzle designed by Italian mathematician Leonardo Fibonacci to ...
Marcel Danesi
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A Note on Bi-Periodic Leonardo Sequence
Armenian Journal of MathematicsIn this work, we define a new generalization of the Leonardo sequence by the recurrence relation $GLe_n=aGLe_{n-1}+GLe_{n-2}+a$ (for even $n$) and $GLe_n=bGLe_{n-1}+GLe_{n-2}+b$ (for odd $n$) with the initial conditions $GLe_0=2a-1$ and $GLe_1=2ab-1$, where $a$ and $b$ are real nonzero numbers.
Catarino, Paula M. M. +1 more
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Techne, 2020 Time and Architecture. The aspects that involve its dichotomous and synchronic relationship (De Fusco, 2019)1, make it a constantly present topic in the architectural debate, intrinsic to any disciplinary aspect.
Francesca Giglio
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Molecular Oncology, EarlyView.We identify USP29 as the only DUB mirroring CA9 expression, a marker of hypoxia and HIF pathway activation associated with PCA aggressiveness. USP29 stabilizes HIF‐1α and HIF‐2α via a noncanonical mechanism that is independent of PHD/pVHL activity yet relies on proteasomal regulation, establishing USP29 as a previously unrecognized regulator of hypoxic
Amelie S Schober +16 more
wiley +1 more source