▽Macdonald, Alan ●06/15 10:52 Sobczyk〓〓〓s simplicial calculus does not have a proper foundation Abstract: The pseudoscalars in Garret Sobczyk〓〓〓s paper Simplicial Calculus with Geometric Algebra are not well defined. Therefore his calculus does not have a proper foundation. Adv. Appl. Cliff. Alg. 27, 853〓〓〓891 (2017). Invited paper for the proceedings of the conference Applied Geometric Algebra in Computer Science and Engineer
▽Bohmian Mechanics ●06/15 08:47 First published Fri Oct 26, 2001; substantive revision Mon Jun 14, 2021 15. Identical Particles 16. Quantum Motion on Shape Space 17. Objections and Responses For example, in the same paper Schrödinger, echoing Einstein in the 1927 Solvay discussions (pp. 440–41 in Bacciagaluppi & Valentini 2009), noted that it may happen in radioactive decay that Many physicists pay lip service to
▽Galileo Galilei ●06/05 10:56 First published Fri Mar 4, 2005; substantive revision Fri Jun 4, 2021 Galileo Galilei (1564–1642) has always played a key role in any history of science, as well as many histories of philosophy. He is a—if not the—central figure of the Scientific Revolution of the seventeenth century. His work in physics (or “natural philosophy”), astronomy, and the methodology of sci
▽Reichenbach’s Common Cause Principle ●05/28 09:12 The Common Cause Principle was introduced by Hans Reichenbach, in The Direction of Time, which was published posthumously in 1956. Suppose that two events A and Bare positively correlated: ￥(p(A￥cap B)>p(A)p(B)￥). Suppose,moreover, that neither event is a cause of the other. Then,Reichenbach’s Common Cause Principle (RCCP) states that Aand B will have a common cause that renders them cond
▽Physicalism ●05/26 23:46 Setting aside what it is properly called, the thesis of physicalism is often described as an extremely old, even ancient, thesis. The first sentence of Friedrich Lange’s The History of Materialism, which was the standard work on the subject in the 19th century is: “Materialism is as old as philosophy,but not older” (1925, 3). What Lange has in mind is the pre-Socratic philosopher
