Theory of categories 
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Teaching Staff in Charge 

Aims 
The study of some notions and basic results in the category theory. Using examples from other topics of algebra (studied before), it will be characterized in the terms of some universal properties of the main constructions in mathematics and the natural aspect of certain connections between them. 
Content 
Necessity of axiomatization of Set Theory, elements of GodelBernays axiomatic theory.
Category and subcategory. Duality principle. Special morphisms in a category. Special objects in a category. Subobjects and quotient objects. Kernels and cokernels. Normal subobjects and conormal quotient objects. Exact categories. Products and coproducts. Semiadditive, additive and abelian categories. Functors. Natural transformations. 
References 
1. PURDEA I., Tratat de algebra moderna, Vol.II, Ed. Acad., 1982.
2. HERRILICH H., STRECKER G.E., Category theory, Boston, 1973. 3. POPESCU N., Categorii abeliene, Ed. Acad., 1971. 4. POPESCU N., POPESCU L., Theory of categories, Ed. Acad., 1979. 5. MACLANE S., Categories for the working mathematician, New York, 1965. 6. MITCHELL B. Theory of categories, Pure and Applied Mathematics, Vol. XVII, Academic Press, New YorkLondon, 1965. 
Assessment 
Tests (50% x final grade). Exam (50% x final grade). 