I geometri italiani e i Grundlagen der Geometrie di Hilbert
I geometri italiani e il problema dei fondamenti (1889-1899)
-measures in Minkowski planes.
Idempotent semigroups and tropical algebraic sets
The tropical semifield, i.e., the real numbers enhanced by the operations of addition and maximum, serves as a base of tropical mathematics. Addition is an abelian group operation, whereas the maximum defines an idempotent semigroup structure. We address the question of the geometry of idempotent semigroups, in particular, tropical algebraic sets carrying the structure of a commutative idempotent semigroup. We show that commutative idempotent semigroups are contractible, that systems of tropical...
Identical Dual Lattices and Subdivision of Space
I-Hülle und I-Kern von Moduln über Bewertungsringen.
Il sottogruppo generato dalle involuzioni regolari di un -ovale -transitivo
Il Teorema di Hasse-Weil e la costruzione di archi completi di cardinalità piccola in piani di Galois di ordine dispari
In questa Nota costruiamo una famiglia di -archi completi di tale che , per ogni . La dimostrazione della completezza si basa sul classico Teorema di Hasse-Weil riguardante il numero dei punti di una curva algebrica irriducibile di .
Imaginární elementy v geometrii [Book]
Immersion Dimension for Real Grassmannians:
Immeubles de Tits triangulaires exotiques
Improvement of inequalities for the -structures and some geometrical connections
The main results are the inequalities (1) and (6) for the minimal number of -structure classes,which improve the ones from [3], and also some geometrical connections, especially the inequality (13).
Incidence Presystems
Incidence structures and closure spaces
Incidence structures of independent sets
Incidence-Polytopes with Toroidal Cells.
Independence structures in the geometry of orders.
Individualisation des Bases Rationnelles des Systemes Lineaires de Quadriques
Inequalities for inscribed simplex and applications.
Inequaltities of Yff type in triangle.