Quarter-pinched Einstein metrics interpolating between real and complex hyperbolic metrics
Sign Up to like & getrecommendations! Published in 2017 at "Mathematische Zeitschrift"
DOI: 10.1007/s00209-017-2013-x
Abstract: We show that the one-loop quantum deformation of the universal hypermultiplet provides a family of complete 1 / 4-pinched negatively curved quaternionic Kähler (i.e. half conformally flat Einstein) metrics $$g^c$$gc, $$c\ge 0$$c≥0, on $$\mathbb {R}^4$$R4. The metric… read more here.
Keywords: hyperbolic metrics; einstein metrics; hyperbolic; quarter pinched ... See more keywords
Homotopies of maps of suspended real and complex projective spaces and their cohomotopy groups
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DOI: 10.1016/j.topol.2020.107553
Abstract: Abstract We describe the set [ X , Y ] of path-components of pointed mapping spaces M ⁎ ( X , Y ) , where X is chosen to be the reduced kth suspension E… read more here.
Keywords: homotopies maps; projective spaces; suspended real; maps suspended ... See more keywords
Unified Approach to Evaluation of Real and Complex Repetitive Controllers
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DOI: 10.1109/access.2021.3068680
Abstract: Repetitive controllers (RCs) are known for their ability of controlling periodic exogenous signals, even if these signals have high harmonic content. Due to the variety of repetitive controllers proposed in the literature, which are significantly… read more here.
Keywords: evaluation; repetitive controllers; unified approach; approach ... See more keywords
Special Issue: Real, Complex and Hypercomplex Number Systems in Data Processing and Representation
Sign Up to like & getrecommendations! Published in 2023 at "Applied Sciences"
DOI: 10.3390/app13116563
Abstract: The evolution of human society is inevitably associated with the widespread development of computer technologies and methods, and the constant evolution of the theory and practice of data processing, as well as the need to… read more here.
Keywords: complex hypercomplex; data processing; issue real; real complex ... See more keywords