2024. Þorgeir Sigurðsson. Samdi Snorri skýringarnar við Háttatal? Ólafsþing 7, 26. október 2024. Ólafsþing 2024 (glærur)
2024. Þorgeir Sigurðsson. Rím og hljóðön — Kenning Hreins Benediktssonar um fornt rím í íslensku og af hverju það skiptir máli að rímið byggi á hljóðönum 'Rhyme and phonemes — The theory of Hreinn Benediktsson.' Fyrirlestur 'lecture' PDF Fyrirlestur á vegum Máls og sögu í Odda stofu 106 kl 16 24. maí 2024. Glærur 'slides'
2023. Þorgeir Sigurðsson. Skáldatal Snorra Sturlusonar blóði drifið 'Skáldatal stained with blood.' Són 21, pp. 66-108. A peer reviewed article PDF
2023. Þorgeir Sigurðsson. Sú vísa er æva skyldi kveðin 'The stanza that never should have been recited.' Són 21, pp. 174-179. PDF
2023. Þorgeir Sigurðsson. Rím og hljóðkerfi, nýjar athuganir 'Rhyme and phonemics, a tutorial' á Rask ráðstefnu númer 36, Glærur 'slides'
2023. Þorgeir Sigurðsson. How inaccurate rhymes reveal Old Norse vowel phonemes. Mål og Minne 115 1, pp. 185-203. A peer reviewed article PDF
2022. Þorgeir Sigurðsson. Hönd númer 2 í Uppsala-Eddu. A lecture at: 5. Ólafsþing laugardaginn 22. október 2022 í Neskirkju. See abstract at https://malogsaga.hi.is/, see slides of lecture: Hönd Einars Hafliðasonar í Uppsalabók?
2022. Þorgeir Sigurðsson, Tor Weidling, Haukur Þorgeirsson, Jon Yngve Hardeberg. Darker inks in 14th- century Norway. A peer reviewed article in Proceedings of the Heri-Tech 2022 conference 16-18 May. It appeared here in this ebook: The Future of Heritage Science and Technologies: ICT and Digital Heritage
2021. Þorgeir Sigurðsson. Haustlǫng. How rhyme and syntax interact in early Old Norse dróttkvætt. Íslenskt mál 43, pages 13–32. A peer reviewed article. PDF
2021. Þorgeir Sigurðsson. Multispectral Imaging — The hidden information in The Book of Sagas. Conference of the Norwegian Society for Image Processing and Pattern Recognition, NOBIM 2021 Gardermoen, 13th-14th September; see abstract NOBIM-A, slides (PDF)
2019–2020. Þorgeir Sigurðsson. Matthew James Driscoll, Klaus Johan Myrvoll. Doctoral defence of Þorgeir Sigurðsson, published in Íslenskt mál 41–42, pages 308–337. PDF
2019. Þorgeir Sigurðsson. The unreadable poem of Arinbjǫrn, preservation, meter, and a restored text. Doctoral thesis from the University of Iceland. Krækja (PDF)
2018. Þorgeir Sigurðsson. Hví skal eigi drepa Egil? Són 16, pages 13–33.Sérprent (PDF). A peer reviewed article.
2018. Þorgeir Sigurðsson. Arinbjarnarkviða as a version of Egils saga. August 12-17 2018. 17th International Saga Conference Reykjavik.Draft abstract
2018. Þorgeir Sigurðsson. Acute accent marks in Old Norse, what are they? Petersburg May 28-29 2018. Conference on Icelandic and Nordic linguistics. Abstract (PDF)
2017. Þorgeir Sigurðsson. Persnesk atkvæði í kviðuhætt 'Persian syllables in the meter of kviðuháttr.' Ólafsþing Oct 21 2017. Conference on Icelandic and historical linguistics. See abstracts Ólafsþing 2017 (PDF)
2016. Þorgeir Sigurðsson. Tvískelfdur háttur og Rekstefja. Són 14, pages 37–74. Sérprent Tvískelft (PDF). A peer reviewed article.
2016. Þorgeir Sigurðsson. Were distinctions made by accents in Old Norse? May 20–22 2016. 22nd Germanic Linguistics Annual Conference, Reykjavik. Abstract (PDF)
2016. Þorgeir Sigurðsson. The alliterative, rhythmic and stanzaic constraints on verbs in dróttkvætt lines. Approaches to Nordic and Germanic Poetry, pages. 257–278. PDF. Editors Kristján Árnason, Stephen Carey, Tonya Kim Dewey, Haukur Þorgeirsson, Ragnar Ingi Aðalsteinsson og Þórhallur Eyþórsson. Institute of lingusitics, University of Iceland, Reykjavík. A peer reviewed book-chapter.
2016. Þorgeir Sigurðsson & Haukur Þorgeirsson. The diphthong /eu/in Old- Norse. 30th Rask conference, Reykavik 2016 hand-out (PDF)
2015. Þorgeir Sigurðsson. Infrared and Multispectral Imaging of Manuscripts. Lecture given in August 2015 in the Arnamagnæan Summer School in Manuscript Studies 2. Slides (PDF).
2014. Þorgeir Sigurðsson. Nýjar skjálfhendur á 12. öld. Són 12, pages 55–67. PDF. A note on content: PDF. A peer reviewed article.
2014. Þorgeir Sigurðsson. Arinbjarnarkviða. Uppskrift frá Árna Magnússyni. Gripla 25, pages 129–141. PDF. English name: The lay of Arinbjorn. A transcript from Árni Magnússon. Summary: PDF. A peer reviewed article.
2013. Þorgeir Sigurðsson. Arinbjarnarkviða - varðveisla. Són 11, pages 13–33. PDF. A note in English on the content: PDF. A peer reviewed article.
2013. Þorgeir Sigurðsson, Guðvarður Már Gunnlaugsson & Haukur Þorgeirsson. Ofan i sortann, Egils saga í Möðruvallabók. Gripla 24, pages 93–120. PDF. English summary: PDF. A peer reviewed article.
2010. Þorgeir Sigurðsson. Þróun dróttkvæða og vísuorðhlutar að hætti Hans Kuhn, Són 8, pages 9–21. PDF. Note in English on content: PDF. A peer reviewed article.
2001. Þorgeir Sigurðsson. Rímstuðlar - Um tengsl ríms, atkvæðaskiptingar og stuðla í íslenskum skáldskap. Íslenskt mál 23, pages 215–227. Tímarit.is. English name: On the relationship between rhyme, syllable boundaries and alliteration in Icelandic poetry. Summary: PDF.
1999. Rögnvaldur Ólafsson, Eiríkur Rögnvalsson og Þorgeir Sigurðsson. Tungutækni - Skýrsla starfshóps. Menntamálaráðuneytið. PDF.
1993. Þorgeir Sigurðsson. Axarskaft Blóðaxar. Lesbók Morgunblaðsins June 5th, pages 5–8. Tímarit.is. On symbolism in Egils saga. Summary: PDF.
Work on radiation
2015. Þorgeir Sigurðsson. TENORM in geothermal applications in Iceland in Proceedings of the SFS XVII conference in Roskilde Denmark, pages 136-141, PDF-Slides
2015. Þorgeir Sigurðsson. TENORM in geothermal applications in Iceland in Proceedings of the NSFS XVII conference in Roskilde Denmark, pages 136-141, paper (PDF)
2015. Þorgeir Sigurðsson & Sveinbjörn Kristjánsson. Sunbeds and sunburns in Iceland. In Proceedings of the NSFS XVII conference, pages 95-98, paper (PDF)
2012. Héry C, Tryggvadóttir L, Sigurðsson Þ, Olafsdóttir E, Sigurgeirsson B, Jonasson JG, Olafsson JH, Boniol M, Byrnes GB, Doré JF, Autier P. A Melanoma epidemic in Iceland: possible influence of sunbed use. Am J Epidemiol. 2010 Oct 1;172(7):762-7 A peer reviewed article.
2010. Þorgeir Sigurðsson, Sigurður M Magnússon, Bárður Sigurgeirsson, Jón H Ólafsson, Jónas Ragnarsson, Guðlaug B Guðjónsdóttir, Matthías Halldórsson, Sveinbjörn Kristjánsson. Sunbed-usage by 12–23 year old in Iceland 2004–2009. In Proceedings of the Third Europan IRPA conference in Helsinki Finland. 2169–2173. PDF.
2008. Þorgeir Sigurðsson. The number and usage of sunbeds in Iceland 1988 and 2005. In Proceedings of the NSFS XV conference in Ålesund Norway, pages pages 202 -209 Paper__for__NSFS_2008_on_Icelandic_Sunbeds_Master (PDF), slides (PDF).
Work on frequency, FFT etc
2021 Þorgeir Sigurðsson, Stefán Ingi Valdimarsson, Sven Sigurðsson. The Diagonal multidimensional FFT – versus the Polynomial transform. Talk by Þorgeir at Conference of the Norwegian Society for Image Processing and Pattern Recognition, NOBIM September 13th –14th 2021. Abstract: NOBIM-B , slides (PDF)
2013 Þorgeir Sigurðsson, Stefán Ingi Valdimarsson, Sven Sigurðsson. The Diagonal Algorithm for multidimensional discrete Fourier transforms. Talk by Stefán Ingi at University of Edinburgh joint Analysis and Applied Mathematics Seminar 4th September 2013: Edinburgh4sept
2013. Þorgeir Sigurðsson, Sven Sigurðsson, Stefán Ingi Valdimarsson. The Diagonal FFT. This is an unpublished paper with a fast method for calculating the multidimensional FFT, presented for publication to IEEE DSP 2013, but it was not interested. The Diagonal FFT October 2013[2590]
1984. Þorgeir Sigurðsson. A New Method for Smoothing Length Distributions of Fish and Sharpening Peaks due to Different Year Classes. International Council for the Exploration of the sea. C.M.1984/ D:7 Statistics Committee. PDF. This paper includes one of the first publications of the Split Radix FFT developed by myself and possibly the first complex conjugate version of it (see Wikipedia on Split Radix FFT).