M. Kwong

activity

20142023

most citedPeriodic Solutions of 2D Isothermal Euler-Poisson Equations with Possible Applications to Spiral and Disk-like Galaxies

18 citations · 42 across the 13 of their papers we have counts for

collaborators

Showing 2016Show all

2 papers · 1 filter

math.CA2016

On a Sine Polynomial of Turan

Horst Alzer, Man Kam Kwong

In 1935, P. Turán proved that $S_{n, a} (x) = j = 1 \sum n (n - j n + a - j) sin (j x) > 0 (n, a \in N; 0 < x < π) .$ We present various related inequalities. Among others, w…

math.CA2016

A New Family of Nonnegative Sine Polynomials

Man Kam Kwong

We present a new family of sine polynomials that are nonnegative for all $x$ in $[0, π]$ . We also characterize all nonnegative sine polynomials of degree 3 and all nonnegative cosin…