1. Polarities in planar spaces

   • Paola Biondi

   Pages: 1 - 10

2. Support functions and integral formulas in the Lorentzian plane

   • Graciela Silvia Birman

   Pages: 11 - 17

3. Chain spaces with many reflections

   • Andrea Blunck

   Pages: 18 - 26

4. The dual of a chain geometry

   • Andrea Blunck
   • Hans Havlicek

   Pages: 27 - 36

5. Independence of axioms for fourgonal families

   • Sven Boekholt
   • Markus Stroppel

   Pages: 37 - 46

6. Edge guards for the fortress problem

   • A. K. O. Choi
   • S. M. Yiu

   Pages: 47 - 64

7. Minimal and harmonic characteristic vector fields on three-dimensional contact metric manifolds

   • J. C. González-Dávila
   • L. Vanhecke

   Pages: 65 - 76

8. Translation planes with many homologies II: odd order

   • Norman L. Johnson
   • Rolando Pomareda

   Pages: 77 - 107

9. On almost paracontact Riemannian manifolds of type (n, n)

   • Mancho Manev
   • Maria Staikova

   Pages: 108 - 114

10. Trifold arrangements and cevian dissections

    • Vincent J. Matsko
    • Douglas B. West
    • John E. Wetzel

    Pages: 115 - 127

11. A note on line–Baer subspace partitions of PG(3, 4)

    • Keith E. Mellinger

    Pages: 128 - 131

12. On finite lattice coverings

    • Martin Meyer
    • Uwe Schnell

    Pages: 132 - 150

13. On Hermitian surfaces with J-invariant Ricci tensor

    • Oleg Muškarov

    Pages: 151 - 156

14. The Radon-split and the Helly-core of a point configuration

    • Shmuel Onn

    Pages: 157 - 162

15. Spread construction of affine partial linear spaces

    • Małgorzata Prażmowska

    Pages: 163 - 171

16. On a construction of affine Grassmannians and spine spaces

    • Krzysztof Prażmowski

    Pages: 172 - 187

17. A generalized fortress problem using k-consecutive vertex guards

    • S. M. Yiu

    Pages: 188 - 198

18. A discrete form of the Beckman-Quarles Theorem for rational spaces

    • Joseph Zaks

    Pages: 199 - 205