Local Cohomology—An Invitation

On Lyubeznik type invariants

“…These numbers, known as Lyubeznik numbers have been investigated for nearly three decades and are indeed functions of the ring R/I (and do not depend on the presentation of R/I as a quotient of a polynomial ring). For detailed information on the history and the status quo we refer to the survey articles [NnBWZ16,WZ20].…”