A categorification of the square root of -1
Yin Tian
Fundamenta Mathematicae, Tome 233 (2016), p. 89-98 / Harvested from The Polish Digital Mathematics Library
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We give a graphical calculus for a monoidal DG category ℐ whose Grothendieck group is isomorphic to the ring ℤ[√(-1)]. We construct a categorical action of ℐ which lifts the action of ℤ[√(-1)] on ℤ².

Publié le : 2016-01-01
EUDML-ID : urn:eudml:doc:282897 
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Yin Tian. A categorification of the square root of -1. Fundamenta Mathematicae, Tome 233 (2016) pp. 89-98. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm232-1-7/