Mathematics Study and teaching 40 History 13 Study and teaching (Elementary) 11 Philosophy 9 Study and teaching (Secondary) 9 Training of 9 Logic, Symbolic and mathematical 8 Study and teaching (Higher) 8 Mathematics teachers 6 Algebra 5 Mathematical models 5 Study and teaching (Primary) 5 Arithmetic 4 Geometry 4 Physics 4 Algebras, Linear 3 Architecture 3 Curriculum planning 3 Data processing 3 Economics, Mathematical 3 Finance 3 Mathematical recreations 3 Methodology 3 Science 3 Set theory 3 Study and teaching (Early childhood) 3 Study and teaching (Preschool) 3 Teachers 3 Architectural design 2