Dear all: Philosophers of science. or logic or of mathematics may be interested in this talk: next Thursday 2.15 in Mathematics, Clarkson Road: Meeting Room 4.
Best, Jeremy B ------ Jeremy Butterfield: Visit the journal, Studies in the History and Philosophy of Modern Physics http://www.sciencedirect.com/science/journal/13552198 ---------- Forwarded message ---------- Date: Sun, 14 Jun 2015 03:22:39 +0000 From: [email protected] To: [email protected] Subject: [Talks.cam] This week's talks: CQIF Seminar Thursday 18 June 2015 --------------------- 14:15 The Topology of Contextuality In detail: ********* Thursday 18 June 2015 --------------------- CQIF Seminar THE TOPOLOGY OF CONTEXTUALITY http://talks.cam.ac.uk/talk/index/59846 Kohei Kishida (University of Oxford) Thursday 18 June 2015, 14:15 - 15:15 MR4, Centre for Mathematical Sciences, Wilberforce Road, Cambridge Contextuality is a key feature of quantum mechanics that provides an important non-classical resource for quantum information and computation. Recently, Abramsky and Brandenburger have used sheaf theory to give a unified treatment of contextuality in quantum theory, subsuming no-go results such as Bell-type non-locality and the Hardy paradox. We can use this approach to show how an important class of contextuality arguments has a topological origin. More specifically, we show that 'all-vs-nothing' proofs of contextuality, such as the well-known Mermin-GHZ argument, are witnessed by cohomological obstructions. ********** To unsubscribe, please use this link: http://talks.cam.ac.uk/reminder (You will need to log into your talks.cam account). If you have any questions please contact [email protected] _____________________________________________________ To unsubscribe from the CamPhilEvents mailing list, or change your membership options, please visit the list information page: http://bit.ly/CamPhilEvents List archive: http://bit.ly/CamPhilEventsArchive Please note that CamPhilEvents doesn't accept email attachments. See the list information page for further details and suggested alternatives.
