Geodesic
Direct Sums of Partial Algebras and Final Algebraic Structures
Canadian journal of mathematics, Tome 20 (1968) no. 1, pp. 872-887

Voir la notice de l'article provenant de la source Cambridge University Press

Słomiński (9), as well as the author (8), gave a descriptive, i.e., noncategory-theoretic, definition of the direct sum of partial algebras, i.e., the co-product in the category of partial algebras (A,ƒ), where ƒ = (ƒi)i∈I, ƒi: dom ƒi ⟶ A, dom ƒi ⊂ AKi , of fixed type A = (K i )i∈I . 
Schmidt, Jürgen. Direct Sums of Partial Algebras and Final Algebraic Structures. Canadian journal of mathematics, Tome 20 (1968) no. 1, pp. 872-887. doi: 10.4153/CJM-1968-084-9
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