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modulo errors for when the margin is too small modulo errors for when the margin is too small menu skip to content posts msc postdoc postgrad outreach undergrad my name is graeme and i am a lapsed mathematician back when i was more active in the field modulo errors was where i kept track of my mathematical output for other projects try the main site straylight for a chronological overview which will reveal just how long it s sometimes been between updates try the blog listing or pick from one of the main themes phases below operational research analytics and data science after academia i made a career shift into operational research this was made possible by my participation in the university of edinburgh s msc programme as detailed here since then i have held various roles in what could most generally be described as analytics with british airways bristol airport and ovo energy some of the more mathematical aspects have included revenue management demand forecasting and data visualisation pure mathematics as a postgraduate student in edinburgh and subsequently as a postdoctoral fellow in bristol i carried out research in pure mathematics my published work was on matrices with constrained eigenvalues particularly in connection with lehmer s problem but more generally i was interested in computational algorithmic and or experimental aspects of number theory and graph theory outreach along the way i ve often tried to convey some of my enthusiasm for mathematics to others whether they shared that enthusiasm or not some of the more organised events and activities of this nature are documented on the outreach section some of the content on modulo errors is deliberately pitched at a wider readership such posts can be identified by the popular mathematics tag curiosities my entry in the mathematics genealogy project is here which can be traced back eventually to newton my erdos number is at most four search not so recently the neighbourhood of two adjacent vertices in a conway 99 graph constraints on conway s 99 graph and its subgraphs conway s 99 graph and related problems euro 2018 visualising air quality data with voronoi diagrams mod errors feeds atom 0 3 lj syndication rss2 0 categories conferences 13 cryptology 6 game theory 8 graph theory 22 lehmer s problem 14 math30002 2 mathematical tourism 6 number theory 19 operational research 8 papers 3 pop maths 27 postdoc 14 postgrad 17 talks 13 teaching 4 undergrad 6 2026 modulo errors powered by wordpress theme f2