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Current Issue
Volume 65,
Issue 3,
March 2024

Focus and Coverage

Journal of Mathematical Physics features content in all areas of mathematical physics. Articles focus on areas of research that illustrate the application of mathematics to problems in physics, the development of mathematical methods suitable for such applications, and the formulation of physical theories.

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Editor's Picks
Research Article
Huaimin Li, Qing Wang
In this paper, we investigate the affine ageing algebra a g e ̂ ( 1 ) , which is a central extension of the loop algebra of the one-spatial ageing algebra a g e ( 1 ) ...
Research Article
Jan van Neerven, Pierre Portal
We show that the Connes–Rovelli thermal time associated with the quantum harmonic oscillator can be described as an (unsharp) observable, that is, as a positive operator valued measure. We ...
Research Article
Tevian Dray, Corinne A. Manogue et al.
We decompose the Lie algebra e 8 ( − 24 ) into representations of e 7 ( − 25 ) ⊕ s l ( 2 , R ) using our recent description of e 8 ...
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Research Article
Ralph M. Kaufmann, Dan Li et al.
We analyze topological invariants, in particular Z 2 invariants, which characterize time reversal invariant topological insulators, in the framework of index theory and K-theory. After ...
Research Article
Huaimin Li, Qing Wang
In this paper, we investigate the affine ageing algebra a g e ̂ ( 1 ) , which is a central extension of the loop algebra of the one-spatial ageing algebra a g e ( 1 ) ...
Research Article
Emanuel Indrei
A 2006 conjecture of Antunes and Freitas is addressed connecting the scaling-invariant polygonal isoperimetric and principal frequency deficits for triangles. This yields a quantitative polygonal ...
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