Hyerim Ko

activity

20182025

most citedDimension of divergence set of the wave equation

1 citations · 1 across the 5 of their papers we have counts for

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math.CA2025

Weighted wave envelope estimates for the parabola

Jongchon Kim, Hyerim Ko

In this paper, we extend the Córdoba-Fefferman square function estimate for the parabola to a weighted setting. Our weighted square function estimate is derived from a weighted wav…

math.CA2025

Local smoothing and maximal estimates for average over surfaces of codimension 2 in $R^{4}$

Seheon Ham, Hyerim Ko

In this paper, we obtain local smoothing estimates for the averages over nondegenerate surfaces of codimension $2$ in $R^{4}$ . We make use of multilinear restriction estimate…

math.CA2018

Remarks on estimates for the adjoint restriction operator to curves over the sphere

Seheon Ham, Hyerim Ko, Sanghyuk Lee

Recently, two of the authors obtained estimates for the adjoint restriction operator to finite type curves with respect to general measures. Strikingly, it turns out that some of s…

Weighted wave envelope estimates for the parabola

Local smoothing and maximal estimates for average over surfaces of codimension 2 in R4

Remarks on estimates for the adjoint restriction operator to curves over the sphere

Local smoothing and maximal estimates for average over surfaces of codimension 2 in $R^{4}$