本刊英文版2024年67卷第2期(237–474)摘要

Positive definiteness of real quadratic forms resulting from the variable-step L1-type approximations of convolution operators Hong-Lin Liao, Tao Tang & Tao Zhou Abstract The positive definiteness of real quadratic forms with convolution structures plays an important role in stability analysis for time-stepping schemes for nonlocal operators. In this work.