"Leonhard Euler" returned 2 hits
1
Introduction of a notation which gives a name and address to every possible point in 3D space, $(x,y,z)$.
Mediaitems:
De'couverte d'un nouveau principe de mecanique, Euler biography:
Category:
Statistics & Graphics
2
Representation of logical propositions and relations diagrammatically. [Actually, Liebnitz and, to some degree, Euler had used such diagrams previously.]
Mediaitems:
Venn diagram, Venn portrait, Wikipedia page on Venn and similar diagrams, Venn biography, A survey of Venn diagrams, Create your own Venn diagram
Category:
Statistics & Graphics
