29 citations · 49 across the 4 of their papers we have counts for
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Some Reflections on the Status of Conventional Quantum Theory when Applied to Quantum Gravity
C. J. Isham
All current approaches to quantum gravity employ essentially standard quantum theory including, in particular, continuum quantities such as the real or complex numbers. However, I…
Quantising the Foliation in History Quantum Field Theory
C. J. Isham, K. N. Savvidou
As a preliminary to discussing the quantisation of the foliation in a history form of general relativity, we show how the discussion in \cite{SavQFT1} of a history version of free,…
A Topos Perspective on the Kochen-Specker Theorem: IV. Interval Valuations
J. Butterfield, C. J. Isham
We extend the topos-theoretic treatment given in previous papers of assigning values to quantities in quantum theory. In those papers, the main idea was to assign a sieve as a part…
A topos perspective on the Kochen-Specker theorem: II. Conceptual Aspects, and Classical Analogues:
C. J. Isham, J. Butterfield
In a previous paper, we have proposed assigning as the value of a physical quantity in quantum theory, a certain kind of set (a sieve) of quantities that are functions of the given…