Geodesic
Classifying vectoids and operad kinds
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Modern problems of mathematics, Tome 273 (2011), pp. 54-71.

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A new generalisation of the notion of space, called vectoid, is suggested. Basic definitions, examples and properties are presented, as well as a construction of direct product of vectoids. Proofs of more complicated properties not used later are just sketched. Classifying vectoids of simplest algebraic structures, such as objects, algebras and coalgebras, are studied in some detail afterwards. Such classifying vectoids give interesting examples of vectoids not coming from spaces known before (such as ringed topoi). Moreover, monoids in the endomorphism categories of these classifying vectoids turn out to provide a systematic approach to constructing different versions of the notion of an operad, as well as its generalisations, unknown before. 
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     title = {Classifying vectoids and operad kinds},
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Nikolai V. Durov. Classifying vectoids and operad kinds. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Modern problems of mathematics, Tome 273 (2011), pp. 54-71. http://geodesic.mathdoc.fr/item/TM_2011_273_a4/

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