309,866 research outputs found
Cyclical Mackey Glass Model for Oil Bull Seasonal
No full textIn this article, we propose an innovative way for modelling oil bull seasonals taking into account seasonal speculations in oil markets. Since oil prices behave very seasonally during two periods of the year (summer and winter), we propose a modification of Mackey Glass equation by taking into account the rhythm of seasonal frequencies. Using monthly data for WTI oil prices, Seasonal Cyclical Mackey Glass estimates indicate that seasonal interactions between heterogeneous speculators with different expectations may be responsible for pronounced swings in prices in both periods. Moreover, the seasonal frequency / 3(referring to a period of 6 months) appears to be persistent over time.Oil bull seasonal, Seasonal speculations, Heterogeneous agents model, Seasonal Cyclical Mackey Glass models.
Social justice hustle mixtape
No full textA web-based digital media publication in collaboration with Carlton Mackey, founder of the grassroots movement “Beautiful in Every Shade” and multidisciplinary artist Christy Namee Eriksen, created as part of a campaign to inspire a global movement for social justice
Mackey, E H, NX13377
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/400799Surname: MACKEY. Given Name(s) or Initials: E H. Military Service Number or Last Known Location: NX13377. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 9484.220445
Item: [2016.0049.33092] "Mackey, E H, NX13377
50 shades of black music: The mixtape
No full textA web-based digital media publication in collaboration with Carlton Mackey, founder of the community-engaged, art-based platform “50 Shades of Black” and graphic artist C. Flux Sing, created as a comprehensive curation of the history and diversity of Black music traditions
Mackey profunctors
No full textWe develop the theory of Mackey profunctors, a version of Mackey functors for
profinite groups.Comment: Minor changes. The final version, to appear in Memoirs AM
Group valued null sequences and metrizable non-Mackey groups
No full textFor a topological abelian group X we topologize the group c0(X) of all X-valued null sequences in a way such that when X= the topology of c0() coincides with the usual Banach space topology of the classical Banach space c0. If X is a non-trivial compact connected metrizable group, we prove that c0(X) is a non-compact Polish locally quasi-convex group with countable dual group c0(X). Surprisingly, for a compact metrizable X, countability of c0(X) leads to connectedness of X. Our principal application of the above results is to the class of locally quasi-convex Mackey groups (LQC-Mackey groups). A topological group (G,) from a class of topological abelian groups will be called a Mackey group in or a -Mackey group if it has the following property: if is a group topology in G such that (G,) and (G,) has the same character group as (G,), then . Based upon the results obtained for c0(X), we provide a large family of metrizable precompact (hence, locally quasi-convex) connected groups which are not LQC-Mackey. Namely, we show that for a connected compact metrizable group X0, the group c0(X), endowed with the topology induced from the product topology on X, is a metrizable precompact connected group which is not a Mackey group in LQC. Since metrizable locally convex spaces always carry the Mackey topology – a well-known fact from Functional Analysis –, our results prove that a Mackey theory for abelian groups is not a simple traslation of items known to hold for locally convex spaces. This paper is a contribution to the Mackey theory for groups, where properties of a topological nature like compactness or connectedness have an important role.Ministerio de Ciencia e Innovación (MICINN)Shota Rustaveli National Sciences FoundationIMIDepto. de Álgebra, Geometría y TopologíaFac. de Ciencias MatemáticasInstituto de Matemática Interdisciplinar (IMI)TRUEpu
Mackey functors over fusion systems
No full textIn this thesis we study the properties of Mackey functors over fusion systems as opposed to Mackey functors over groups. Given a fusion system F we start by defning the Mackey algebra of F. We then use it in order to provide defnitions for Mackey functors over F and F-centric Mackey functors (also known as Fc -restricted Mackey functors) which coincide with those in the literature. We go on to proving that several results such as Higman's criterion and the Green correspondence can be translated from Mackey functors over groups to F-centric Mackey functors. We also show that the methods used to perform this translation cannot be used to prove similar results for Mackey functors over fusion systems in general. In the second part of this thesis we focus our efforts on the sharpness conjecture for fusion systems. We do so by using spectral sequences in order to provide suffcient conditions (in terms of fusion subsystems of F) for the conjecture to be satisfied for F. We then use the developed tools in order to prove that the sharpness conjecture is satisfed for all Benson-Solomon fusion systems thus completing previous work of Henke, Libman and Lynd
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