Urquhart, Alasdair Who was Schiller Joe Scroggs? (English) Zbl 07576861 Bimbó, Katalin (ed.), Relevance logics and other tools for reasoning. Essays in honor of J. Michael Dunn. London: College Publications. Tributes 46, 427-434 (2022). Summary: Schiller Joe Scroggs was the author of one of the most renowned papers in modal logic. Several logicians have conjectured that he in fact never existed, being the invention of J. C. C. McKinsey. The main aim of this article is to refute this conjecture, and to explain who he was. The precise origins of Scroggs’s paper remain somewhat mysterious.For the entire collection see [Zbl 1496.03006]. MSC: 03-03 History of mathematical logic and foundations 03B45 Modal logic (including the logic of norms) 03B47 Substructural logics (including relevance, entailment, linear logic, Lambek calculus, BCK and BCI logics) 01A70 Biographies, obituaries, personalia, bibliographies 01A60 History of mathematics in the 20th century Keywords:finite characteristic matrix; J. C. C. McKinsey; modal logic; S5; Schiller Joe Scroggs Biographic References: Scroggs, Schiller Joe PDFBibTeX XMLCite \textit{A. Urquhart}, Tributes 46, 427--434 (2022; Zbl 07576861)