Introduction

Hashagen, Ulf; Keil-Slawik, Reinhard; Norberg, Arthur L.

doi:10.1007/978-3-662-04954-9_1

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…It is interesting to compare this relation, in its version as a measurement uncertainty relation, with a simple ansatz of a joint measurement using the idea of approximate cloning (cf. also [6]). To this end consider an asymmetric cloner, Thus V maps systems to three copies of systems, of which the middle one is then traced out as an ancilla.…”

Section: Qudits: Zn × Znmentioning

confidence: 87%

Uncertainty relations for general phase spaces

Werner

2016

Front. Phys.

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We describe a setup for obtaining uncertainty relations for arbitrary pairs of observables related by a Fourier transform. The physical examples discussed here are the standard position and momentum, number and angle, finite qudit systems, and strings of qubits for quantum information applications. The uncertainty relations allow for an arbitrary choice of metric for the outcome distance, and the choice of an exponent distinguishing, e.g., absolute and root mean square deviations. The emphasis of this article is on developing a unified treatment, in which one observable takes on values in an arbitrary locally compact Abelian group and the other in the dual group. In all cases, the phase space symmetry implies the equality of measurement and preparation uncertainty bounds. There is also a straightforward method for determining the optimal bounds.

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Section: Qudits: Zn × Znmentioning

confidence: 87%

Uncertainty relations for general phase spaces

Werner

2016

Front. Phys.

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“…Code is the hinge on which the pervasive influence of computers in the contemporary world turns, and yet the historiography of software is far less well developed than that of hardware. The place of software within the history of computing was discussed at a pivotal meeting in 2000 where delegates characterized the existing literature as being too technical and too focused on individual languages and applications [27]. They called instead for wider narratives that would set software in a range of contexts, including business and economic history and the history of engineering.…”

Section: Discussionmentioning

confidence: 99%

Logic, Code, and the History of Programming

Priestley¹

2021

IEEE Annals Hist. Comput.

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“…A recent conference at the Nixdorf Museum in Paderborn, Germany, attempted to map the history of software, considering it as science, engineering, labour process, reliable artefact and industry, with a look at the question of how one exhibits it in a museum. 15 The focus lay on software and its production as general phenomena. What the conference missed was software as model, software as experience, software as medium of thought and action, software as environment within which people work and live.…”

Section: Worlds Of Softwarementioning

confidence: 99%

The histories of computing(s)

Mahoney¹

2005

Interdisciplinary Science Reviews

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The first electronic digital computers were variations on the protean design of a limited Turing machine, which described not a single device but a schema, and which could assume many forms and could develop in many directions. It became what various groups of people made of it. The computer thus has little or no history of its own. Rather, it has histories derived from the histories of the groups of practitioners who saw in it, or in some yet to be envisioned form of it, the potential to realise their agendas and aspirations. What kinds of computers we have designed since 1945, and what kinds of programs we have written for them, reflect not so much the nature of the computer as the purposes and aspirations of the communities who guided those designs and wrote those programs. Their work reflects not the history of the computer but the histories of those groups, even as the use of computers in many cases fundamentally redirected the course of those histories. Separating the histories of computing, or perhaps even of computings, shifts attention to the major communities, or bodies of shared disciplinary practices, who embraced the new device and helped to shape it by adapting it to their needs and aspirations.

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Introduction

Cited by 4 publications

References 2 publications

Uncertainty relations for general phase spaces

Uncertainty relations for general phase spaces

Logic, Code, and the History of Programming

The histories of computing(s)

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