Head of work Mbuyi Kalubi proclaimed doctor of science at UNIKIN

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Kinshasa, November 26th, 2021 (CPA) .- The head of work Charles Mbuyi Kalubi was proclaimed, doctor of science at the University of Kinshasa (UNIKIN) with the mention « the greatest distinction », at the end of the public defense of a doctoral thesis in pure mathematics, entitled « On algebraic and geometric properties of usual quasi-affine applications of discrete spaces Zn ». The recipient indicated that this doctoral dissertation is in the field of discrete geometry, more precisely on quasi-affine applications. These mappings being defined in Zn, he argued, the major question rests on the verification of theorems and properties valid for affine mappings defined in continuous spaces. The settler claimed to have shown in general, the set of quasi-affine bijective mappings has a group structure, except Pythagorean rotations. The promoter of this thesis, Prof. Musesa Landa, Dean of the Faculty of Science and other members of the jury, the professors, Basile Bossoto of the Marien Ngouabi University (UMNG), Lowolo Okako of the National Pedagogical University (UPN) ), Lungiambudila Mamona, Walo Omana and Komawila Ngidioni from UNIKIN, appreciated the originality of this thesis, which also carried out a comparative study between the algebraic and geometric properties of some affine applications and those of their variants in discrete geometry . They also praised the merits of the applicant for finding that properties such as the conservation of distance, the conservation of straight alignment, are only verified by a few quasi-affine applications.