Euclid
contributed to geometry “Euclidian Geometry”
Pythagoras
pythagoreanism
Napier
logarithms
Leonhard Euler
theory of trigonometric and logarithmic functions. reducing analytical operations to a greater simplicity
Gauss
algebra geometry analysis and statistics
Plato
math and geometry
identifying 5 regular symmetrical 3D shapes (platonic solids)
Newton
mathematical principles of natural philosophy
Descartes
serious effort to defeat skepticism within modern era