Thomas Joannes Stieltjes was a Dutch mathematician. He was a pioneer in the field of moment problems and contributed to the study of continued fractions. The Thomas Stieltjes Institute for Mathematics at Leiden University, dissolved in 2011, was named after him, as is the Riemann–Stieltjes integral.

Zwolle is a city and municipality in the Northeastern Netherlands. It is the capital of the province of Overijssel and the province's second-largest municipality, after Enschede, and has a population of 132.441 as of December 2023. Zwolle borders the province of Gelderland and lies on the eastern side of the River IJssel.