Transformations of Robertson-Walker spacetimes preserving separation zero.
Transitive Collineation Groups on Affine Planes.
Transitivity Domains of Groups of Similarities.
Translačné štruktúry. Centrálne a necentrálne translačné štruktúry
Translation complements of C-planes: (IV).
Translation planes of dimension two and characteristic two.
Translation planes of even order in which the dimension has only one odd factor.
Translation planes of odd order and odd dimension.
Translation spreads of the split Cayley hexagon.
Translation structures and group partitions
Translations and Axial Collineations of Affine Designs.
Transvectants des formes binaires et représentations des groupes binaires polyhedraux
Transversal designs and partitions associated with Frobenius groups.
Triangle inequalities from the triangle inequality.
Triangles I: Shapes.
Triangles II: Complex triangle coordinates.
Triangles III: Complex triangle functions.
Triangulating Point Sets in Space.
Trigonometric diophantine equations (On vanishing sums of roots of unity)
Trisection de l'angle au moyen du limaçon de Pascal