Related articles:
Planar graph
Polyhedron
Chi (letter)
Platonic solid
List of uniform polyhedra
Defect (geometry)
Vertex (geometry)
Surface
List of topics named after Leonhard Euler
Sheaf cohomology
Genus (mathematics)
Orbifold
Torus
Real projective plane
Betti number
Face (geometry)
Homology (mathematics)
Leonhard Euler
Imre Lakatos
Edge (geometry)
Key terms:
euler characteristic
chi
faces
topological
polyhedron
edges
graph
finite
polyhedra
proofs
homology
sphere
vertices
minus
euler's
manifold
convex
projective
more generally
planar
cdot
euler's formula
polyhedral
hexagons
homotopy
betti number
pentagons
mathcal
compact space
fibration
number of vertices
polyhedral surface
convex polyhedron
invariant
euler class
covering space
number of faces
colon
orbifold
sheaf
homotopy equivalent
decomposition
topological spaces
vertex
strata
gauss
algebraic
multiplication
cardinality
poset
torus
planar graph
scriptstyle
homeomorphic
Search external links cited by footnotes on Wikipedia page Euler characteristic:
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