Babes-Bolyai University of Cluj-Napoca
Faculty of Mathematics and Computer Science
Study Cycle: Graduate

SUBJECT

Code
Subject
MMG0003 Geometry 2 (Affine Geometry)
Section
Semester
Hours: C+S+L
Category
Type
Mathematics
2
2+1+0
fundamental
compulsory
Mathematics and Computer Science
2
2+1+0
fundamental
compulsory
Applied Mathematics
2
2+1+0
fundamental
compulsory
Teaching Staff in Charge
Lect. TOPAN Liana Manuela, Ph.D.,  ltopanmath.ubbcluj.ro
Prof. VARGA Csaba Gyorgy, Ph.D.,  csvargacs.ubbcluj.ro
Lect. ANDRAS Szilard Karoly,  andraszmath.ubbcluj.ro
Aims
This course is a passage from the three dimensinal affine geometry to the n-dimensional affine geometry and an introduction to projective geometry. The purpose of the course is to generalize the notions of the intuitive geometry. At the end of the course, the students will be able to identify and operate with the elements of the affine and projective spaces.
Content
1. Affine spaces, basic properties. Examples of affine spaces. Affine combinations of points. Affine subspaces. Finite dimensional affine spaces. The dimension of an affine space. Cartesian systems of coordinates. Affine systems of coordinates. Analytic representations of a p-plane. Morphisms of affine spaces. Translations, projections, involutions. Morphisms of finite dimensional affine spaces. Cartesian equations of planes. Affine forms. Affine hyperplanes. Biaffine forms. Quadratic affine forms. Canonical forms of quadratic forms. Centers of symmetry. Quadratic varieties. Affine classification of conics and quadrics.
2. Affine planes. Transformations of affine planes. Projective planes. The completion of the affine planes. Homogeneous coordinates in the real projective plane. Desargues@s Axiom. Desargues@s planes. Projective spaces. The duality principle. Fano@s Axiom and Fano@s planes. Harmonic division of points. Perspectivities and projectivities. Pappus@s Axiom and Pappus@ planes.
References
1. Bădescu, L., Lecţii de geometrie, Editura Universităţii din Bucureşti, 1999
2. Craioveanu, M., Albu, I.D., Geometrie afină şi euclidiană, Editura Facla, Timişoara, 1982
3. Huschitt, M., Culegere de probleme de geometrie sintetică şi proiectivă, Editura Didactică şi Pedagogică, Bucureşti, 1971
4. Kadison, L., Kromann, M.T., Projective Geometry and Modern Algebra, Birkhäuser, 1996
5. Popescu, I.P., Geometrie afină şi euclidiană, Editura Facla, Timişoara, 1984
Assessment
Two partial written exams each account for 40% of the final grade, while the seminar activitiy of the student accounts for 20%.
Links: Syllabus for all subjects
Romanian version for this subject
Rtf format for this subject