Results 31 to 40 of about 9,463,996 (246)
On compositions of numbers and graphs
The main purpose of this note is to pose a couple of problems which are easily formulated thought some seem to be not yet solved. These problems are of general interest for discrete mathematics including a new twig of a bough of theory of graphs i.e. a given graph compositions.
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Narayana numbers and Schur–Szegő composition
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Vladimir P. Kostov +2 more
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Determination of the Optimum formula for Composite Motor Gasoline Octane Number Blending Enhancer
To decrease the dependency of producing high octane number gasoline on the catalytic processes in petroleum refineries and to increase the gasoline pool, the effect of adding a suggested formula of composite blending octane number enhancer to motor ...
Alaa D. Jawad Al-Bayati +2 more
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Generating d-Composite Sandwich Numbers
See the abstract in the attached pdf.
Lenny Jones, Alicia Lamarche
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A Fibonacci-like Sequence of Composite Numbers [PDF]
In 1964, Ronald Graham proved that there exist relatively prime natural numbers $a$ and $b$ such that the sequence $\{A_n\}$ defined by $$ {A}_{n} =A_{n-1}+A_{n-2}\qquad (n\ge 2;A_0=a,A_1=b)$$ contains no prime numbers, and constructed a 34-digit pair satisfying this condition. In 1990, Donald Knuth found a 17-digit pair satisfying the same conditions.
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Nickel-Phosphorus (Ni-P) composite coatings were prepared on a poplar veneer surface via a simple electroless nickel (Ni) approach. The substrate deformation, flatness, crystalline structure, and wear resistance of the Ni-P composite coatings were ...
Yanfei Pan, Xin Wang, Jintian Huang
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Introduction: The purpose of this study was to evaluate the effects of different concentrations of chitosan solution used as a final rinse after root canal treatment on the shear bond strength of composite resin to enamel and coronary dentin.
Vanessa Lessa Araújo +6 more
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Heat Transfer in Composite Cylinders Under Harmonically Oscillating Ambient Conditions
An analytical solution is presented for transient heat conduction in a two-layer composite cylinder subjected to outer-surface convection with a general time-dependent ambient temperature.
Rajai S. Alassar +3 more
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Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan +18 more
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Additive manufacturing (AM) of multifunctional thermoplastic composites faces persistent trade‑offs among speed, geometric complexity, and property control.
Hamed Yazdani Nezhad
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