Kostin Andrei (Andrey) Viktorovich

Publications in Math-Net.Ru

1. Casey type theorem and Laguerre transformations
   
   Vladikavkaz. Mat. Zh., 27:4 (2025),  72–85
2. Shadow problem and isometric embeddings of pseudospherical surfaces
   
   Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 223 (2023),  69–78
3. Problem of shadow and surface of constant curvature
   
   Sib. Èlektron. Mat. Izv., 20:1 (2023),  150–164
4. On analogues of the Fuhrmann's theorem on the Lobachevsky plane
   
   Vladikavkaz. Mat. Zh., 25:4 (2023),  58–67
5. Some problems of convex analysis in the Lobachevsky space
   
   Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 216 (2022),  57–65
6. Beltrami theorem in Minkowski space
   
   Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 215 (2022),  73–80
7. On generalizations of Ptolemy's theorem on the Lobachevsky plane
   
   Sib. Èlektron. Mat. Izv., 19:2 (2022),  404–414
8. Asymptotic lines on pseudospheres and the angle of parallelism
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 2021, no. 6,  25–34
9. Tammes problem and contact number of a sphere in spaces of constant curvature
   
   Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 182 (2020),  45–50
10. On Dini helicoids in the Minkowski space
    
    Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 180 (2020),  50–57
11. Evolutes of meridians and asymptotic on pseudospheres
    
    Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 169 (2019),  23–30
12. Asymptotic lines on the pseudo-spherical surfaces
    
    Vladikavkaz. Mat. Zh., 21:1 (2019),  16–26
13. An interpretation of Casey’s theorem and of its hyperbolic analogue
    
    Sib. Èlektron. Mat. Izv., 13 (2016),  242–251
14. Smarandache Theorem in Hyperbolic Geometry
    
    Zh. Mat. Fiz. Anal. Geom., 10:2 (2014),  221–232