Strong coincidence and overlap coincidence

Overlap coincidence to strong coincidence in substitution tiling dynamics

Overlap coincidence is an equivalent criterion to pure discrete spectrum of the dynamics of self-affine tilings in R. In the case of d = 1, strong coincidence on m-letter irreducible substitution has been introduced in [10, 8] which implies that the system is metrically conjugate to a domain exchange in Rm−1. However being a domain exchange does not imply the property of pure discrete spectrum ...

Coincidence as Overlap

Material constitution and coincidence are widely discussed but poorly understood. This paper is an attempt to make progress by developing an account of how numerically distinct material objects coincide when one constitutes the other. I address two central issues: first, do material coincidents share their proper spatiotemporal parts, and if so, do they share all of them? Second, how can materi...

Gamma-gamma Coincidence Overlap Coincidence Method for Measuring Gamma-gamma Coincidence of Na Radiation Safety

RADIATION SAFETY The radioactive sources used in this experiment are only a few microcuries in strength, and they are all sealed, so they actually pose no significant health hazard. However we will follow good safety procedure. Horseplay involving the sources is forbidden. While the sources are not dangerous, like any radioactive source they should be treated with respect and properly handled. ...

Linking and Coincidence Invariants

Given a link map f into a manifold of the form Q = N ×R, when can it be deformed to an “unlinked” position (in some sense, e.g. where its components map to disjoint R-levels)? Using the language of normal bordism theory as well as the path space approach of Hatcher and Quinn we define obstructions ω̃ε(f), ε = + or ε = −, which often answer this question completely and which, in addition, turn ou...

Comorbidity and Coincidence