David Fitch

David Fitch

Species (Cites) in 1989, to halt the steep decline in elephant numbers. “Wild elephant populations were decimated by the ivory trade. By the time the 1989 Cites ban came into force, Africa’s elephants had been reduced by more than 50 per cent,” says Mark Jones, programmes director at Care for the Wild, an international wildlife charity which commissioned the mammoth ivory report. “Poaching cont...

Fitch-Style Modal Lambda Calculi

Fitch-style modal deduction, in which modalities are eliminated by opening a subordinate proof, and introduced by shutting one, were investigated in the 1990s as a basis for lambda calculi. We show that such calculi have good computational properties for a variety of intuitionistic modal logics. Semantics are given in cartesian closed categories equipped with an adjunction of endofunctors, with...

Response to Pamela Fitch

Reply by Moyer: Pamela Fitch makes good points in response to my recent editorial on affective massage therapy (AMT), and I recall that when I was writing it, I wavered on whether to nominate AMT only as a subfield for research or as a subfield for research and practice. I also had, in addition to Fitch’s letter, a thought-provoking email exchange on that topic with Dr. Lesley Teitelbaum. Limit...

W. Tecumseh Fitch

Angela Palmer is also responsible for the Ghost Forest installation, which was displayed in Copenhagen, London, and Oxford, and which recently moved to its final resting place at the National Botanic Garden of Wales at Llanarthne, Carmarthenshire. It includes ten large tree stumps from a commercially logged rainforest in West Africa. The trees are meant to draw attention to the alarming loss of...

Mason Fitch Cogswell