His primary areas of investigation include Monotonic function, Gamma function, Discrete mathematics, Pure mathematics and Mathematical analysis. His studies deal with areas such as Function, Class, Exponential function and Combinatorics as well as Monotonic function. The concepts of his Gamma function study are interwoven with issues in Divided differences and Double factorial.
His work on Open problem as part of general Discrete mathematics study is frequently linked to Convexity, bridging the gap between disciplines. His Pure mathematics research is multidisciplinary, incorporating perspectives in Geometric mean, Jensen's inequality and Inequality. His Mathematical analysis research includes themes of Convex function and Subderivative.
Feng Qi mainly investigates Pure mathematics, Monotonic function, Combinatorics, Mathematical analysis and Function. His Pure mathematics study incorporates themes from Type, Exponential function and Inequality. His work deals with themes such as Gamma function, Logarithm and Discrete mathematics, which intersect with Monotonic function.
His Combinatorics study integrates concerns from other disciplines, such as Upper and lower bounds and Sequence. Mathematical analysis is often connected to Applied mathematics in his work. The Bell polynomials study which covers Stirling numbers of the second kind that intersects with Bernoulli polynomials.
Feng Qi mostly deals with Pure mathematics, Monotonic function, Combinatorics, Bell polynomials and Gamma function. His research integrates issues of Conformable matrix, Hadamard transform, Type, Function and Inequality in his study of Pure mathematics. The various areas that Feng Qi examines in his Monotonic function study include Logarithm, Bernstein function and Exponential function.
Feng Qi interconnects Discrete mathematics and Tridiagonal matrix in the investigation of issues within Combinatorics. His Bell polynomials research includes elements of Mathematical analysis, Differential equation, Stirling number, Special values and Inversion. His biological study spans a wide range of topics, including Multinomial distribution, Series and Applied mathematics.
His main research concerns Pure mathematics, Monotonic function, Generating function, Type and Gamma function. His Pure mathematics study combines topics from a wide range of disciplines, such as Function, Conformable matrix and Inequality. His study in Monotonic function is interdisciplinary in nature, drawing from both Discrete mathematics, Logarithm and Multivariate statistics.
His study on Generating function also encompasses disciplines like
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Bounds for the ratio of two gamma functions.
Journal of Inequalities and Applications (2010)
A complete monotonicity property of the gamma function
Feng Qi;Chao-Ping Chen.
Journal of Mathematical Analysis and Applications (2004)
Complete Monotonicities of Functions Involving the Gamma and Digamma Functions
Feng Qi;Bai-Ni Guo.
Some Integral Inequalities of Hermite-Hadamard Type for Convex Functions with Applications to Means
Bo-Yan Xi;Feng Qi.
Journal of Function Spaces and Applications (2012)
Some completely monotonic functions involving the gamma and polygamma functions
Feng Qi;Bai-Ni Guo;Chao-Ping Chen.
Journal of The Australian Mathematical Society (2006)
Generalized weighted mean values with two parameters
Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences (1998)
Refinements, Generalizations, and Applications of Jordan's Inequality and Related Problems
Feng Qi;Da-Wei Niu;Bai-Ni Guo.
Journal of Inequalities and Applications (2009)
BOUNDS FOR THE RATIO OF TWO GAMMA FUNCTIONS-FROM WENDEL'S AND RELATED INEQUALITIES TO LOGARITHMICALLY COMPLETELY MONOTONIC FUNCTIONS
Feng Qi;Qiu-Ming Luo.
Banach Journal of Mathematical Analysis (2012)
SOME INEQUALITIES CONSTRUCTED BY TCHEBYSHEFF'S INTEGRAL INEQUALITY
Feng Qi;L I-Hong Cui;Sen-Lin Xu;A. Elbert.
Mathematical Inequalities & Applications (1999)
Three classes of logarithmically completely monotonic functions involving gamma and psi functions
Integral Transforms and Special Functions (2007)
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