1. On sets of plane-type \((0, mq, 2mq)_2\) in \(\mathrm {PG}(3, q)\) with a long secant

   • Vito Napolitano

   OriginalPaper 22 November 2020 Article: 50

2. A new approach to Bertrand curves in Euclidean 3-space

   • Çetin Camci
   • Ali Uçum
   • Kazım İlarslan

   OriginalPaper 20 November 2020 Article: 49

   

3. Sasakian manifolds satisfying certain conditions on Q tensor

   • Hülya Bağdatli Yilmaz

   OriginalPaper 13 November 2020 Article: 48

4. Confocal conics and 4-webs of maximal rank

   • Sergey I. Agafonov

   OriginalPaper 11 November 2020 Article: 47

5. Sixteen-dimensional locally compact planes of Lenz-type V on which \({\mathrm{SU}}_2 {\mathbb {H}}\) acts as a group of collineations

   • Hermann Hähl
   • Ekkehard Meyer

   OriginalPaper Open access 06 November 2020 Article: 46

6. A combinatorial characterization of the Baer and the unital cone in \(PG(3,q^2)\)

   • Stefano Innamorati
   • Fulvio Zuanni

   OriginalPaper 16 October 2020 Article: 45

7. The cylinder theorem in \({{\mathcal {H}}}^2\times R\)

   • João Lucas Marques Barbosa
   • Manfredo Perdigão do Carmo

   OriginalPaper 06 October 2020 Article: 44

8. Uniqueness of the translating bowl in \(\mathbb {H}^2\times \mathbb {R}\)

   • Antonio Bueno

   OriginalPaper 28 September 2020 Article: 43

   

9. On the Hadwiger covering problem in low dimensions

   • A. Prymak
   • V. Shepelska

   OriginalPaper 22 September 2020 Article: 42

   

10. A para-Kähler structure in the space of oriented geodesics in a real space form

    • Nikos Georgiou

    OriginalPaper 17 September 2020 Article: 41

11. Spaces of harmonic maps of the projective plane to the four-dimensional sphere

    • Ravil Gabdurakhmanov

    OriginalPaper 30 August 2020 Article: 40

12. Inequalities for generalized normalized \(\delta \)-Casorati curvatures of slant submanifolds in metallic Riemannian space forms

    • Majid Ali Choudhary
    • Adara M. Blaga

    OriginalPaper 28 August 2020 Article: 39

13. Recognition of plane paths and plane curves under linear pseudo-similarity transformations

    • İdris Ören
    • Djavvat Khadjiev

    OriginalPaper 26 August 2020 Article: 38

14. \(\Lambda \)-Configuration and embedding

    • Yevgenya Movshovich

    OriginalPaper 19 August 2020 Article: 37

    

15. Nets of conics of rank one in \(\mathrm {PG}(2,q)\), q odd

    • Michel Lavrauw
    • Tomasz Popiel
    • John Sheekey

    OriginalPaper 17 August 2020 Article: 36