Sprawozdanie z działalności Sekcji Krótkofalowców ToMiTo za okres maj 2017 r. – kwiecień 2018 r.
نویسندگان
چکیده
منابع مشابه
R/Z Index Theory
We define topological and analytic indices in R/Z K-theory and show that they are equal.
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On behalf of everyone at PR&P, I convey the passing of our Editorin-Chief, Dr Darrell Abernethy. Darrell has been part of PR&P since its inception, initially as Deputy EiC and since 2016 as EiC. He was a stalwart of the journal and assisted in the recruitment of a strong editorial board and the communication with editors of its supporter journals. From a professional perspective, Darrell had a ...
متن کاملDISTORTION ELEMENTS IN Diff ∞ (R/Z)
We consider the group of smooth diffeomorphisms of the circle. We show that any recurrent f (in the sense that {f}n∈Z is not discrete) is in fact a distortion element (in the sense that its iterates can be written as short compositions involving finitely many smooth diffeomorphisms). Thus rotations are distortion elements.
متن کاملAn Irrational Construction of R from Z
This paper reports on a construction of the real numbers in the ProofPower implementation of the HOL logic. Since the original construction was implemented, some major improvements to the ideas have been discovered. The improvements involve some entertaining mathematics: it turns out that the Dedekind cuts provide many routes one can travel to get from the ring of integers, Z, to the field of r...
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ژورنال
عنوان ژورنال: Rocznik Toruński
سال: 2018
ISSN: 0557-2177
DOI: 10.12775/rt.2018.018