Selected papers from the 2021 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2021): Guest Editors.

A constant focus in planning the conference was a strong commitment to excellence in the technical program, a hallmark of this series of conferences. The American Nuclear Society (ANS) 2021 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2021) continued the rich tradition of this biennial conference series, showcasing preeminent computational science research for nuclear applications. Mathematics and computational methods are of fundamental importance in the design and analysis of nuclear systems. [Extracted from the article]